SSP470-Touareg 2011 Electronics
Short Description
vw, touareg, electronics...
Description
Service Training
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Self-study Programme 470
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The Touareg 2011 Electrics/electronics Design and Function
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The Touareg 2011 sets new standards in the area of electrics/electronics. electrics/electronics. Of all the latest Volkswagen vehicles, it features the most modern and innovative network that enables communication among all electronic control units.
As a luxury class vehicle, the Touareg Touareg 2011 not only has a modern infotainment system and improved driver assist systems but also completely newly developed functions, such as Area View and dynamic light assist.
For the first time at Volkswagen, two new data transfer systems have been introduced with the new Touareg in addition to the familiar CAN data bus and LIN data bus. The new FlexRay data bus joins the control units of the improved driver assist system for adaptive cruise control ACC. With the MOST bus, the infotainment system uses the most modern fibre-optic technology and thereby boasts new highlights in terms of function, display and controls.
This self-study programme is intended to help you become familiar with the electrics/electronics electrics/electronics and also the driver assist systems employed in the Touareg 2011 and to understand how they interact.
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S470_001
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Attention Note
The Touareg 2011 sets new standards in the area of electrics/electronics. electrics/electronics. Of all the latest Volkswagen vehicles, it features the most modern and innovative network that enables communication among all electronic control units.
As a luxury class vehicle, the Touareg Touareg 2011 not only has a modern infotainment system and improved driver assist systems but also completely newly developed functions, such as Area View and dynamic light assist.
For the first time at Volkswagen, two new data transfer systems have been introduced with the new Touareg in addition to the familiar CAN data bus and LIN data bus. The new FlexRay data bus joins the control units of the improved driver assist system for adaptive cruise control ACC. With the MOST bus, the infotainment system uses the most modern fibre-optic technology and thereby boasts new highlights in terms of function, display and controls.
This self-study programme is intended to help you become familiar with the electrics/electronics electrics/electronics and also the driver assist systems employed in the Touareg 2011 and to understand how they interact.
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Attention Note
Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Electrical system system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Convenience electronics electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Driver assist assist systems systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 . Volksw age n n AG
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Infotainment. Infotainment. . . . . . . . . . . . . . r. i s. e. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 o
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Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .b i 50 l i t
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Test yourself . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 i
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Introduction Overview To start with, the diverse new features of the electrics and electronics of the Touareg 2011 are given some clarity. Listed as follows, therefore, are the main participating new components and functions, which are allocated to the two large main groups infotainment and driver assist systems. However, However, note that as networking of the most diverse vehicle systems intensifies because components are being combined to realise several vehicle functions, so clear assignment to one system constitutes a simplification, this in G. Volksw age n n AG g e n A d circumstances. reality may not be a representation of the actual e s w a conditions in certain o n l k s V b y
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Infotainment
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The following components and component groups have either been fur ther developed or added e as e s l p o e h new items: i ,
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MOST data bus Dash panel insert i , with 7" TFT colour display (premium) Control unit for information electronics 1 with o p - intern internal al hard-d hard-driv rive e u p - Telephone module module with Bluetooth, GSM GSM part (optional) a c r e le - Naviga Navigatio tion n modu module m - Medi Media a pla playe yerr m o c r o DYNAUDIO sound system e t a v i r Decentralised radio tuner p r o f TV tuner (optional) g n i y p o Additional DVD changer (optional) C t
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The following infotainment systems and functions are available, for example, as further developments in the . G Touareg 2011 or are new additions: y b d e t c e t o r P
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Animated Animated 3D navigat navigation ion guidance guidance in in dash panel insert (premium (premium)) Display Display and operation operation of the surroundin surrounding g area feature featuress using the Rear View View and Area View View (optional) (optional) function functionss on the touch screen of the infotainment in the centre console Premium Premium telephone telephone connect connection ion (equates (equates to permanently permanently installe installed d telephone telephone with dedicated dedicated SIM card slot) slot) Standard Standard Bluet Bluetooth ooth module module (integrat (integrated) ed) has has to be enabled enabled via via PR number number Radi Radio/ o/na navi viga gati tion on sys syste tem m RNS RNS 850 850
Further information on the subject of infotainment can be found in self-study programme programme 473 "Infotainment in the Touareg 2011".
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Vehicle and driver assist systems The following components and component groups have either been further developed or are new additions: -
Bi-xenon Bi-xenon headli headlight ght module moduless with main beam beam mask mask and and LED day driving driving lights lights FlexRa xRay da data bus bus Rotati Rotating, ng, electr electroni onicc igniti ignition on lock lock Ex Excl clusi usive ve hig high h spee speed d CAN data data buse busess Mult Mu ltif ifun unct ctio iona nall camer camera a Dive ive rate ate se sender nder
The following vehicle systems and driver assist systems are available, for example, as further fur ther developments in the Touareg 2011 or are new additions: -
Adap Adapti tive ve crui cruise se cont contro roll ACC ACC Dyna Dynami micc corn corner erin ing g ligh lightt Dyna Dynami micc ligh lightt assi assist st Reve Revers rsin ing g assi assist stan antt Lane ane depa depart rtur ure e war warni ning ng Area Area View iew, opt optio iona nall 5th 5th gen gener erat atio ion n imm immob obil iliz izer er y V
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The networking concept
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For the launch of the Touareg, the highest level of n u d infotainment equipment is installed. e t m r This means that in all instances RNS 850 and MOST e p fibre-optics are used. The data bus diagnostic n o t interface J533 forms the interface for communication e l o h for the following data bus systems: w
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The FlexRay data bus, installed depending on the optional ACC, meets the higher demands of future networks, particularly with regards to a higher data transfer rate compared with the familiar CAN data bus. This is a standard that all manufacturers apply in which the data transfer rate is 10MBit/s.
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FlexRay data bus Extended CAN data bus MOST data bus LIN data bus on J533 LIN data bus on J519 LIN data bus on J393
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Only on vehicles without MOST (introduced later) Depending on equipment
CAN data bus line LIN data bus line Private bus FlexRay data bus line MOST fibre-optic cable
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Electrical system LIN data bus ranges Shown as an example here are the LIN data bus network ranges from three control units: -
LIN data bus on data bus diagnostic interface J533 LIN data bus on onboard supply control unit 1 J519 LIN data bus on convenience system central control unit J393
In this way, the overview diagram for the overall network on the previous double page spread is given slightly more clarity and shows you how complicated and multi-layered the network architecture has become even beyond the large CAN data bus network ranges.
LIN data bus on Onboard supply control unit 1 J519 J519 Onboard supply control unit 1 has three LIN data bus lines that are separate from each other. In total 9 LIN data bus participants are connected to this control unit.
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LIN data bus on data bus diagnostic interface J533 In addition to the connections on CAN and MOST, the diagnostic interface (Gateway) also features an individual LIN data bus with three data bus participants.
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Alternator Battery monitoring control unit Voltage stabiliser Data bus diagnostic interface
S470_126
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The new bus systems MOST bus With the Touareg 2011 a new fibre-optic connection finds its debut at Volkswagen. The connection is employed by G. Volksw age n AG e n A infotainment components to communicate with each other using MOST protocol. d o the a g e s s w k n o l o t g V y u a MOST stands for "Media Oriented for transferring audio, video, voice d b Systems Transport". It is a serial bus system r a e n t s i r e o e and data signals via a fibre-optic cable. Seen in physical terms, MOST is a ring-shaped network structure (network h t o u r a a c s c s topology). A MOST network can comprise up to 64 MOST devices. The order in which the infotainment components e e l p n t u a must be placed in the e dring is determined during development and may not be altered. n y t t i
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i ,
r
e l
e s p e
o h
w
c
t t
n
i
o
r
o
t
MOST bus in Touareg 2011
t
r
a p
h e c
o
n i , Control unit for s
r r
e
TV tuner
e
c
t
n
e
information o electronics 1 s
s s
p
o
r
u p
f
i n f o r
l
a i
m
c r e
a
m m
n
o c r o
i n
e t a v i r p r
t h i s d o c
Diagnostic interface for data bus
o f
g n
u m
Control unit in dash panel insert
p
o
C . t h g
i r y p
o c
y b d e t c e t o r P S470_054
The MOST bus in the Touareg 2011 has the following features:
● ● ●
● ●
e n t .
C
i y
●
DVD changer
t i o
Optical data bus system Data transfer rate: 21.2 Mbit/s Ring topology Address-orientated messages to a specific recipient Cyclic and event-controlled data transfer High level of safety against disturbance
l o k s
w a g e n A G
.
o p r y i g h t b V y
Radio
Control unit for digital sound package
With the aid of the optic MOST bus, data is exchanged among the participating components in digital form. Data transfer with the aid of fibre-optics enables a considerably greater data transfer rate. Compared with radio waves, light waves have short wavelengths. They do not generate electromagnetic interfering waves themselves and, at the same time, are not sensitive to interference from external electromagnetic sources.
11
Electrical system
n AG a g e
w l k s V o
. Volksw age n AG
d oe
s n
y d b
o t g u a r a n t
e i s r
o
h t u a
e e
o r a
s s e l n
c c
e p
u d
t a
n y
Data protocol e t t
l
i
i a b i l i
m r e
p
t y
t o
w i t
n
s i
h
,
r
1 frame = 512bit (64bytes)
e l
o h
w
e s p e c
480bit (60 bytes)
n
i
t t
o
r
o
t
h e c
t
r
a p
o r r
n i ,
e
c
s
t
n
e
e
s
o p u p l
a i
c r e
Data field for n f asynchronous data o r m (asynchronous channel) a f
i
m m
o c r o
S470_096
s s
o
Data field for synchronous data (synchronous channel)
r
t
i o n i n
Control t channel = 16bit h
Boundary field = 4bit description)
i s d o c
e t a (boundary v i r p r
u m
o f
Start field g = 4bit n i y (preamble) p o C
e n t .
C
. t h g
i r y p
o c
y b d e t c e t o r P
Parity field = 1bit (parity)
l o k s
w a g e n A G
.
o y p r i g h t b V y
Status field = 7bit
The data to be transferred are sub-divided into frames. Each frame comprises 512bits (64bytes) of digital information. The overall length of a frame is made up of one start and one boundary field, two data fields, one controlling data field, one status and one parity field. The maximum amount of data that can be stored in both data fields is limited to 480bits (60bytes) due to this fixed division. The data is transferred via 3 channels: - Control channel for controlling data - Synchronous channel for audio and video data transfer (synchronous realtime transfer without intermediate storage) - Asynchronous channel for large quantities of data, e.g. map data to dashboard insert (asynchronous, eventcontrolled data transfer, intermediate storage possible) On the new Toureg 2011, the size of the synchronous data field is fixed at 40 bytes and the asynchronous data field is fixed at 20 bytes.
12
Structure of fibre-optic cable Outer sheath e.g. orange
Inner sheath always black
Front surface
Core
Cladding S470_098
The fibre-optic cable comprises several layers: ●
● ●
●
the outer coloured coat serves as a means of identification, as protection against mechanical damage and against temperature extremes. The black inner coat protects the core against light irradiation. The cladding (polymer fluoride) is a layer around the core with lower refractive index. Its thickness is several microns and it ensures that the light fed through the core nearer to the edges is reflected back to the centre of the core, thus preventing "lateral" loss of light from the core. . Volksw age n AG n AG d o e a g e The core is the central area of the fibre-optic cable. It is made from specially conditioned plexiglass. It channels s n s w k l o t V o g y u a b the light with practically no loss. r a e d i s r
n t e
o
h t u a
e
o r
a c
s s e l
c
e p
n
u d
t a
n y
e
t t i
l
i a b i l i
m r e
p
t y
t o
w i t
n
s
h
i ,
r
e l
e s p e
o h
w
c
t t
n
i
o
r
o
t
h e c
t
r
To prevent any loss in the transfer of data, the front surface of the fibre-optic cable has to be smooth, o e i , vertical and clean. Dirt and scratches on the front surface could lead to interference and data transfer n e losses and it could also impair the performance of the fibre-optic cable. o s p a p n
r r
s
c
t
e
s
s
o
r
u p
f
i n f o r
l
a i
m
c r e
a
m m
t
i o n i n
o c r o
t h i s o c
e t a v i r p r
u m
o f
g n
i y
o
C . t h g
i r y p
o c
y b d e t c e t o r P
r y i g
e n t .
C
o p
p
d
h t b y
V l o k s w
a g
e n A . G
13
Electrical system FlexRay The higher demands on data rates and also data security necessitate the introduction of time-controlled bus systems with high band width (as a comparison: the CAN data bus is an event-controlled bus system). FlexRay is a new data bus system, which is debuted in the Touareg 2011. FlexRay is a serial, deterministic and faulttolerant field bus system for use in automobiles. At 10Mbit/s, FlexRay is twenty times faster than a high speed CAN (which has 500kbit/s). A further important feature is the guaranteed reaction and period. A latent period here describes the time a olksw age n . Vlatent AG d n AG a g e o e w s n l k s message needs to travel from the sender to receiver. In this context, deterministic transfer (predetermined, o t o g u y V b a d r a restricted) is another way of describing r iit. n t recipient or recipients at a s eThis means that the information reaches the e o e h t o u r fixed or predetermined point in time (realtime capability). a a c s s e l n
c
e p
u d
t a
n
e t t
y Unlike the CAN data bus, at least two control units are needed on the FlexRay data bus in order to start the i a b m r i FlexRay. These control units p eare called cold start control units (KS). Their number is restricted to max. three per y t w o i FlexRay network. n t h e e s For time-controlled communication within this set network, the shared time basis is formed by the common mode of l p o e h several control units. Synchronising the clocks within the control units in the FlexRay network means that failure of w n o one individual control ounit will not influence the communication behaviour of the other control units. Typically, four h o control units contribute towards synchronisation of the FlexRay. e i These control units are ,designated synchronous control units. n e If more than four control units are included in a FlexRay network, the remaining control units simply synchronise o s p u themselves to the time-basis, which is defined by the synchronous control units. Since these additional o control units p n a o are integrated in a running, synchronous network, they are designated integration control units. c r r m l
i
l i t
s
i ,
r
c
t t
i
r
t
e c
t
r
a p n
r r
s
c
t
e
s
s
r
f
i
l
f
i
e
a
m m
t
i o n i n
o c r o
t h i s o c
e t a v i r p r
u m
o f
g n
C
i y
p
o
C . t h g
i r y p
o c
y b d e t c e t o r P
The FlexRay in the Touareg 2011 has the following features: ● ● ● ● ● ●
14
e n t .
o p r y i g h t
b y
V l o k s w a g e n A
. G
Electric two-wire bus system Data transfer rate: maximum 10Mbit/s Mixed topology Realtime capability Enables allotted regulations and employment in safety-relevant systems Synchronous transfer
d
Network structure of FlexRay A FlexRay network could take the form of different network structures (topologies): Star topology
CU
Bus topology
CU
Mixed topology CU
GW
CU
l k s o
y V d b
s n
e i s r
o h CU t u
GW
CU
e
m r e
CU
GW
t a
n y
CU
i a b i l i
t y
S470_104
S470_100
n
s i
a c
CUc e p
l
p
t o
o r
CU
CU
CU
e e
CU
u d
t t i
o t g u a r a n t
CU
a s s e l n
CU
CU
G. Volksw age n AG g e n A d o e w a
CU
w i t
h
CU e s
,
e l
o h
p
w Properties for configuring FlexRay topology n
e c
Key
t t
i
o
r
o
t
r
a p
Control units have 2, 4 or more FlexRay i , connection pins (daisy chain) Maximum 4 o control units on one branch (inc. star) p u Maximum 12 pmetre line length per branch a c r Low ohm terminal connection of star and end e m control unit m o c r connection of intermediate High ohm terminal o e t a control units v i r n
o r r
e
t
n
e
-
e c
c
s
-
h
GW Gateway CU Control unit
t
-
S470_102
r
e ohms) High ohm terminal connection (2400
s
s s
o
r
f Low ohm terminal connection (94 n ohms) i
l
f o r
i
m
a
t i o
n i n
t h
i s d o c
u m
p r
o f
g n
e n t .
C
i y
p
o
C . t h g
i r y p
o c
y b d e t c e t o r P
FlexRay topology in the Touareg 2011
o y p r i g h t b V y
l o k s
w a g e n A G
.
Features: -
J851
J428
J850 J533
2 branches Active star in Gateway Max. two control units per branch Daisy chain wiring FlexRay communication only with terminal 15 "ON"
S470_108 Key J428 J533 J850 J851
Control unit for adaptive cruise control Data bus diagnostic interface (Gateway) Control unit 2 for adaptive cruise control Image processing control unit
Term. 30, low ohm terminal connection (94 oh ms) Term. 15, high ohm terminal connection (2400 ohms) Term. 15, low ohm terminal connection (94 ohms)
15
Electrical system . Volksw age n AG
n AG a g e
w l k s o
y V d b
d o e
s n
e i s r
o
h t u a
o t g u a r a n t
e e
Data protocol s s e l n
o r a
c c
e p
u d
t a
n y
e
t t i
l
m r e
Cycle 1
p
t o
i a b i l i
Cycle 2
Cycle 64
t y
w i t
n
s
h
i ,
r
e l
e s p e
o h
w
....
c
t t
n i
o
r
o
t
h
t
r
a p
1 t o l S
n i ,
s
e
s
2 t o l S
o p
3 t o l S
4 t o l S
....
e
Dynamic oc 1 2 3 4 i i i i segment e c n n
Static n segment t
r r
n i n i i i n e M M M M s
o l S
t
n i n i M
....
s
o
r
u p
f
i n f o r
l
a i
m
c r e
m m
a
t
i o n i n
Effective data field
o c r o
e t a v i r p r
Start field segment) i
o f
g (header n
t h i s o c
u m
Control field (trailer segment)
o
C . t h g
C
o p
y p
r y i g
e n t .
d
Effective data field
Start field (header segment)
S470_112 Control field (trailer segment)
i t r y Communication on the bus works with packages o V of y b cycles. One package of cycles comprises 64 cycles (320 ms). p o c l y k b s w d e a g Each cycle from the t c cycle package is . G sub-divided into one large static and one small dynamic segment and lasts e e t o n A r P 5ms. h
Static segment In the static segment, each control unit has one or more slots (time windows) permanently assigned to it, during which time it can send messages. The quantity and the type of data in this instance is specified for each control unit. This is the deterministic part of the FlexRay, with which assurance can be given that important messages (in the Touareg 2011, those from adaptive cruise control) have been transferred within the prescribed time. Dynamic segment The dynamic segment can be used by a control unit to send additional messages. The communication behaviour in the dynamic segment is not deterministic. If a control unit does not issue a message, the next control unit can send their message straight after the mini slot has elapsed. Currently, the dynamic segment is only used in the FlexRay network of the Touareg 2011 for special developer messages. This segment behaves like an event-controlled data transfer system.
16
. Volksw age n AG
n AG a g e
w l k s V o
d o e
s n
y d b
e i s r
o
h t u a
o t g u a r a n t
e e
o r a
s s e l n
c c
e p
u d
t a
n y
e t t
Bus physics m
l
i
i a b i l i
r e
p
t y
t o
w
i n t h Changing from high speed CAN data bus to FlexRay has brought about an increased data transfer rate from e e s l 500kBit/s to 10MBit/s. This change also has knock-on effects on the bit time and the p bus voltage level. o s i ,
r
h
e c
w
t t
n
i
o
r
o
t
h e c
FlexRay
High speed CAN data o
t
r
a p
n [V] i ,
Idle
Dominant
s
e
Dominant
[V] 3,5
Bus rest
s
2,8 2,5 2,2
o p r
Data 1
u p
Rec.
Dominant
Recessive
Bus rest
s s
f
i n f o r
1,5
c r e
t
n
o
2,5
Data 0
c
e
l
a i
r r
e
m
a
m m
t i o
o c r o
S470_116 e t a
100ns
100ns
[ns]
v i
r p r
o f
g
n i n
S470_114
t h
i
s 2000ns d o c
2000ns
[ns]
u m
e n t .
i The two lines of n the The two lines y FlexRay are designated bus C of the high speed CAN can bus are p o o p C y .bus negative (BM, blue). r positive (BP, red) and t designated CAN high (CAN_H) and CAN low i g h h g i t r b y y p V o The voltage level of both wires change in this example (CAN_L) The voltage levels of the two lines alternate c l o y k b s w d e a t g c e e t o n A to minimum 2.2V and maximum 2.8 r V. P between minimum 1.5V and maximum 3.5V. The . G The voltage difference is at least 600 mV. voltage level difference is 2V.
The FlexRay works with three signal conditions: ● "Idle" – the levels of both bus lines are recessive at 2.5V (idling status). Recessive means that the levels can be overwritten by any other control unit. ● "Data 0" – the B P wire has a low voltage level and the BM wire has a high dominant voltage level. Dominant means that this level cannot be overwritten by other control units. ● "Data 1" – the BP wire has a high voltage level and the BM wire has a low dominant voltage level.
The high speed CAN data bus works with two signal statuses: ● "Recessive bit" – the level of the two bus lines is 2.5V; ● "Dominant bit" – CAN_L has a low voltage level and CAN_H has a high voltage level. With this voltage level configuration, the transfer time for one bit is 2000 nanoseconds (ns).
With this voltage level configuration, the transfer time for one bit is 100 nanoseconds (ns). If there is no activity (>2660ms) on the bus, synchronisation of the control units will be lost and the FlexRay has to resynchronise itself.
17
Electrical system Comparison between CAN and FlexRay FlexRay
CAN
Time-controlled
Event-controlled
The point of time at which the medium can be used ● . Volksw age n AG ● is fixed. n AG d o e a g e s n s w k l o t o The period of use of the medium is fixed. g u y V a r d b a e s i r Time at h o which recipient receives message is known. n t e ●e
●
● ●
The medium is only used when required. The point of time at which the medium can be used depends on the equipment. Time received is known. o r a c ● Medium may be overloaded. c
t u a
s s e l
e p
n
u d
t a
n y
e
t t i
l
i a b i l i
m r e
p
t y
t o
w i t
n
s
h
i ,
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e s p e
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w
n
i
r
o t
c
t t
Summary of bus systems
o
t
h e c
r
a p
o r r
n i , s
e
c
t
n
e
e
s
o p
CAN low
r
u p
High speed CAN
s s
o
LIN
f
i n f o r
l
a i
c r e
100kBit/s
Data rate
500kBit/s
19,2kBit/s
m
MOST
FlexRay
21MBit/s
10MBit/s
Ring
Bus, stern, mixed
Fibre-optic cable
Two wire
-
Not capable of single wire
a
m m
Bus
Topology
o c r o
e t Medium a v i r p r
Two wire Single wire function
o f Fail-safe g feature
n i y
p
Bus Two wire Not capable of single wire
C . t h g
o c
y b d e t c e t o r P
t h i s d o c
Single wire
o
i r y p
t
i o n i n
Bus
-
u m
e n t
. C o p
r y i g h t b V y
o
l k s w a g e n A G
.
Repairs to FlexRay wires can be performed in the same way as CAN bus lines using the VAS wiring repair set.
18
Convenience electronics The 5th generation immobilizer The new features of the 5th generation immobilizer are purely in relation to the data processes between vehicle and tester via the FAZIT database. The internal process in the vehicle have not been changed. On the 5th generation unit, the FAZIT database makes a ll decisions online regarding the necessary work measures (one button automatic). The following tester functions are available: -
Adapting immobilizer Component protection of master (Gateway) combined system Component protection of individual components olksw y V
. V
n AG a g e
w l k s o
b master e dfunction,
age n A
G d o
e s n
o t g u a r a n t
With the component protection the Gateway is programmed and authorised as a component i s r e o e h t o protection master by FAZIT. This ais activities among u a key control unit for the following component protection r a c s c s e e l individual components. p n t u d
e
t t i
m r e
p
t o
n
s
i ,
a
n y
l
i a b i l i
t y
w i t
h
e Component protection listing for individual components: e s l p o e h 90 - Component protection for reversible belt tensioner on front right w n o 13 - Component protection for cruise control h o 05 - Component protection for access and start authorisation o e i 15 - Component protection for airbag control unit , n e 06 - Component protection for front passenger seat adjustment o s p o 36 - Component protection for driver seat adjustment u p n a 56 - Component protection for radio o c r r m e a 17 - Component protection for dash panel insert m o m n o 47 - Component protection for sound system c n r o h i 08 - Component protection e s t for Climatronic control unit d a v o i r for onboard supply control unit c 09 - Component protection u p r m o e n g 19 - Component protection f for data bus diagnostic interface t n . i y C o o 88 - Component protection for p cruise control 2 C y p . r t i g h h g i t r b y 0E - Component protection for media player 1 y p V o c l o y k s w d e a t g 5F - Component protection for information b electronics c e e t o n r A P . G 8F - Component protection for reversible belt tensioner on front left r
c
t t
i
r
t
e c
t
r
a p
r r
n
c
s
t
e
s
s
r
f
i
l
f
i
t i
i
t
The above named control units must be authorised online by FAZIT as otherwise the control unit will be impaired in its functionality to some degree.
To quickly check whether a component protection control unit works, it can also be swapped over providing it works with terminal 30. However, the ignition should not be switched on as otherwise interrogation by the Gateway will ensue in terms of component protection.
19
Convenience electronics The onboard supply control units On the Touareg 2011, management of the onboard supply and convenience functions are shared by onboard supply control unit J519 and convenience system central control unit J393.
Onboard supply control unit 1 J519
. Volksw age n AG
n AG a g e
w l k s V o
y d b
e i s r
o
h t u a
d oe
s n
o t g u a r a n t
e e
o r a
s s e l n
c c
e p
u d
t a
n y
e t t
l
i
i a b i l i
m r e
p
t y
t o
w i t
n
Function
s i
h
,
r
e l
e s p e
S470_040
o h
w
Light functions
c
n
t t
Air conditioner functions
i
r
o
o
t
h e c
t
r
a p
●
i ,ts Exterior light master, actuation of ligh Turn signal slave, actuation of front turn signals o p Interior light master u p a Leaving home and manual coming home c r e Interior and control lighting m n
●
s
● ● ●
e
●
s
r
l
●
i
●
●
m
Driver information ● ● ● ● ● ●
Exterior temperature, unfiltered Brake pad/lining wear warning Brake fluid warning Coolant warning Washer water warning Light warning
o c r o
●
e t a v i r p r
o f
i y
p
o
C . t h g
i r ● y p
y b d e t ● c e t o r P ● ●
● ●
● ● ● ●
Actuation of wiper via LIN Rain sensor via LIN Actuation of washer/dual washer pump Actuation of HWS pump
●
C
o y p r i g h t b V y
Interfaces to J393 ●
●
20
e n t .
Actuation of horn relay l o k s w a Servotronic with actuation of valve g e n A . G Read-in reversing light switch Read-in bonnet contact Read-in bonnet contact for ESI LIN Gateway for UGDO sender Eco start/stop button, actuation of LED E-mode button, actuation of LED
o c
o r r
e
c
t
n
e
s s
o
f
i n f o r
m
a
Authorisation for electric steering column lock (discrete and CAN) Hardware feedback terminal 15 (CAN signal)
t i o
n i n h i s d o c
u m
Other functions
g n
●
Wash/wipe
Front seat heating (not with climate seats) LIN Gateway for seat heater/seat ventilation control LIN Gateway for pressure sensor and AQS Actuation of air conditioner compressor (not hybrid) Humidity sensor via LIN
t
. Volksw age n AG
n AG a g e
w l k s V o
y d b
e i s r o h t u a
Convenience system central control unit J393
d oe
s n
o t g u a r a n t
e e
o r a
s s e l n
c c
e p
u d
t a
n y
e t t
l
i
i a b i l i
m r e
p
t y
t o
w i t
n
s
h
i ,
r
e l
e s p e
o h
w
c
t t
n
i
o
r
o
t
h e c
t
r
Function
a p
S470_008
o r r
n i ,
e
c
s
t
n
e
e
s
Light functions
o p
s s
Immobilizer
r
o
u p
f
i n f o r
l
a i
● ● ● ●
c r Exterior light slave, actuation of rear e lights m m Brake light actuation o c r Turn signal master o e t v Luggage compartment light actuation a i r
● ● ●
p
g n
●
● ● ● ● ● ●
o
i r y p
Terminal control ●
● ●
Keyless Entry and Keyless Go Read-in ignition/starter button Actuation of Kessy aerials
u m
e n t .
External socket relay l orelay y k b ● External rear window g heater s w d e a t c e e t o n A r . G ● PSR P via LIN ● Convenience opening, convenience turn signalling ● Exterior mirror actuation ● Crash signal evaluation ● LIN Gateway for UGDO operating unit ● Self-diagnosis ●
o c
● ●
i s d o c
o y p r i g h t b V y
p
Central locking master Radio remote control (315MHz, 434MHz, 868MHz) Tank flap engage and release Luggage compartment release Power latch actuation Convenience opening/closing Window regulator and sliding roof authorisation ATA, actuation of sounder and I RM/TS
Kessy
n i n
t h
C
i y
C . t h g
●
a
t i o
Other functions
r o f
Central locking and ATA
m
Immobilizer master Read-in transponder of EIL via LIN Actuation of ESL via LIN
● ●
S-contact, term.15, term.50, term.75 Read-in electronic ignition lock Actuation of key withdrawal lock Engine ECU wake-up function
The abbreviations used here are explained in the glossary and can be looked up there. In other technical literature, J519 is also designated body control module 1 (BCM 1) and J393 is also designated body control module 2 (BCM 2).
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The electronic ignition lock An electronic ignition lock finds its debut in the new Touareg. This ignition lock is a new design. Part of this involved converting the mechanical turning principle into a version that senses what position the key has been turned to electronically.
Design The new remote key fob has no key as such but three buttons to unlock and lock the vehicle and also to open the rear lid. If the VW emblem is pressed along with an additional retaining lug, an emergency key pops out on the rear. This serves as a means of unlocking the vehicle in an emergency if the battery in the fob is discharged. The remote key fob also has a mounting for a key ring. The battery lid can be found behind the chrome clasp of the remote key fob.
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Function Inserting remote key fob
To start the vehicle, the remote key fob is inserted into the opening until it engages securely. In this first position the infotainment components, such as radio and navigation system are activated as the S-contact is actuated when the fob is inserted. If the remote key fob is just inserted but not turned, it can be withdrawn again. The key lock is not active olksw ag . Vsimply e n A n AG G d o a g e e s s w k n l o t o in this case. g u y V
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h start When the remote key fob is turned from the o position (engine on or ignition on) it is locked e mechanically to hold it securely in the ignition lock. To n e start the engine, the remote key fob is turned s o clockwise or anti-clockwise - both directions are n o possible - onto the relevant switch contact r (stop). The m a remote key fob always returns automatically to the o n n start position.
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To switch the engine off, the key is turned clockwise or anti-clockwise again. The ignition is switched off again in the same way. When doing so, the remote key fob is electromechanically released and can be withdrawn.
u on, this is If just the ignition is to be switched m e n t motion of the remote . performed with the same turning C o p r y key (clockwise or anti-clockwise) but without the i g h t b V y start authorisation, i.e. brake prerequisite for engine l o k s w a g e n A pressed . G (automatic gearbox/DSG) or clutch pressed (manual gearbox).
If the vehicle battery is discharged, removal of the mechanically locked remote key fob is still possible via the specially designed mechanical emergency release device in the ignition lock.
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Convenience electronics The area view sensors The area view sensors form the basis of the driver assist systems. The Touareg 2011 features several radars and camera sensors that monitor the surrounding area, which is analysed and interpreted using intelligent algorithms.
Ultrasound front
Multifunctional front camera
Ultrasound rear
Radar, rear
Radar, front
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The Touareg is equipped at the front with two 77GHz radar sensors with a range of i 200m. These are used for a b m r i e control (ACC) and Front Scan. the adaptive cruise y p t w o i n t A multifunctional front camera serves: h e e s l - to detect vehicles (invisible to radar) p o e h - to monitor n wthe area in front of the vehicle when stationary (automatic restart of ACC) o h o - to detect lane information for lane departure warning. o - to detect vehicles and other illuminated objects at night for dynamic light assist. e i , In the rear area there are two further radar sensors (24 GHz) that scan the traffic situation nbehind the vehicle. e o basis for lane change assist, the signals of which are used in addition by ACC and Front Scan. They form the s p o u To aid parking, p the Touareg is equipped with two 4-channel ultrasound systems. The information from the n a o c r ultrasound sensors is also used for ACC regulation. r m l
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Driver assist systems The multifunctional camera system With the camera control unit J852, the multifunctional camera forms one assembly unit. With the operating and display protocol (ODP), the camera control unit J852 sends information via the extended CAN data bus to be used by the light assist systems and the lane departure warning system. If the Touareg is fitted with adaptive cruise control (ACC), the control unit for image processing J851 is also included. J852 receives the image information via a fast LVDS line (Low Voltage Differential Signalling). This control unit sends the safety-relevant signals along the fast FlexRay data bus. Vand supplies the control units for olksw age n A n AG G d o a g e e s s w k n o from the l cruise control J428 and J850, which are also located in the FlexRay network, with the details derived t g V o y u a b d r a e n t s i image information. r e o e h t u a
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n To calculate the dive angle of the vehicle about the Y-axis with greater speed and safety, the camera control unit p t a u n d y e t has a dive rate sender at its disposal, which is connected via the extended CAN. i a t i
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S470_016 Control unit for image processing J851
Camera control unit J852
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Driver assist systems The multifunctional front camera
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The multifunctional front camera is integrated into the mirror base. It has the following features:
s in the Touareg serves several systems. It The camerae p e supplies image information at different ranges for the o following driver assist systems: h r
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It is a colour camera with a resolution of 1024 x 512 pixels. The range, depending on the system, can be up to 800m. The horizontal opening angle is 42 degrees and the vertical angle is 21 degrees.
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Adaptive ecruise control (ACC) with Front Scan with n e reduced stopping distance 3 (60m) s o Lane departure warning (80m) n o Dynamic r light assist (DLA) (400/800m) m a Traffic osign/marking recognition (later n introduction) n
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The dive rate sender G752 is located on the rear right (in direction of travel) beneath the bench seat support panel. It provides the vehicle's rate of rotation about the lateral axis (y-axis) and transfers this signal via the extended CAN exclusively to the camera control unit J852.
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The dive angle calculated from this is needed by the camera for the image processing functions. The dive rate sender is not capable of self-diagnosis and does not have its own diagnosis address. Diagnosis is possible via the camera control unit J852 with address code 85.
The adaptive cruise control Adaptive cruise control, sometimes referred to as automatic cruise control (ACC), with double radar and Front Scan is an enhancement of the conventional cruise control system (CCS).
Description of system Target vehicle detected
Display in dash panel insert
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The adaptive cruise control system also ensures that a s n preset distance from the vehicle travelling ahead is o t g u a r a safely maintained. In this case, the speed of the n t e e o r vehicle a is adapted to the speed of any vehicle c Actual c e p ahead. The speed can be set in four stages travelling distance t a n y (from approx. 1 -2.5sec.). i a b Furthermore,i y the driver has three driving programmes to choose from:w "Standard", "Comfort" and i t h e "Dynamic". s
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The adaptive cruise control system keeps the vehicle travelling at a previously selected speed, which the driver can set for open roads at 30-250km/h and for following at 0-250km/h.
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If the road ahead h is clear, the vehicle is accelerated up to the desired speed. If there is a vehicle travelling o e ahead at a slower speed in the same lane, the system n adapts to allow the e vehicle to match that speed with a s preset distance. o
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a Lane mdetection by the camera, route data from the navigation system and detection of stationary vehicles and o m n o vehicles travelling ahead by both front radars ensures an improved estimation of which path to follow to continue c n r o h i e s the route. t d a v o i c u If a turn r signal is activated, the system detects the driver's intention to m overtake and improves the system dynamics p r o f e n g with consideration for following traffic. t n . i y t i
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If the vehicle travelling ahead slows down to a halt, the Touareg will brake automatically and stop behind the vehicle. If the vehicle ahead resumes its journey within three seconds, the Touareg will follow it likewise automatically. If the stationary period lasts longer than three seconds, the driver can activate a time window of 15 seconds by pressing the RES button in the steering column switch enabling the Touareg to follow the vehicle ahead automatically within this period. With the gap close function (press RES button, both vehicles stationary), the gap to the vehicle ahead can be closed comfortably.
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Driver assist systems y V
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Front o t p Scan in the Touareg is not just an assist function with a warning that is y designed to prevent collision accidents, w i n t h it also offers, in its third generation, a means of braking the vehicle (also without driver intervention). e e s l p o contributes towards reducing the accident severity. Under certain conditions This e (speed-dependent), the system h w n may be able to avoid the accident. o h o This automatic emergency braking function (AN B) is achieved by reduced stopping distance RSD3. It accompanies o reduced stopping distance RSD1 and reduced stopping distance RSD2 to form part of Front Scan. e i t
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d 2 a v o Following i r the warning jolt from reduced stopping distance 2, the system cdecelerates at a rate of 3m/s until a u p r m o f reaction period of has elapsed. If the driver does not brake sufficiently, e the system will intervene with additional n g t n . i 2 C p braking. If the y driver does not respond at all, the deceleration rate ois increased to 5m/s . If a collision is o p C y . r i g h h unavoidable, the tsystem will initiate emergency braking, providing the following traffic is not put at risk, with g i t r b y y p V o o 2 c l y k b s maximum deceleration up to e 9 m/s . In this instance, g an overall speed reduction of 40 km/h is engineered to reduce w d a t c e e t o n A r G P . the accident severity. While this increased deceleration is taking place, the following traffic is made aware of the situation by the hazard warning lights (emergency flashing).
S470_056 RSD3: Deceleration with 5 m/s2 ANB: Emergency braking with 9m/s 2 RSD2: Warning jolt RSD1: Highest sensitivity of brake assist RSD3: Deceleration with 3m/s2 RSD2: Optical/acoustic warning RSD1: Prefill RSD1: Increased sensitivity of brake assist
Further information about reduced stopping distance RSD1 and RSD2 can be found in self-study programme no. 374 "Traction control and assist systems".
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System design The adaptive cruise control system is a functional highlight. A combined system of up to 27 control units provides even greater comfort and safety. A new feature of the adaptive cruise control system in the Touareg 2011 is not just that this assist system is one function spread over several control units but also that other assist systems with completely different tasks can be included in the operation. In this instance, for example, these are the radar sensors from the lane depar ture warning, the multifunctional camera system, which is used, among other things, to keep the vehicle in lane, and also the ultrasound sensors from park distance control. All of the components and systems mentioned serve as a means of monitoring the area in front of and behind the vehicle and identifying potential obstacles. They are described briefly as follows.
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The multifunctional camera system serves as a supplier of redundant signals to determineh plausibility of the signals o from the front radar sensors. As before, the system bridges the detection gap between ultrasound sensors and e i , radar sensors. n t
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Using the p camera with its 60 m range for the ACC and RSD3 functions and the navigation n data (with unrestricted a o c r m number of lanes is "view"), an r improved forecast of what path the road is taking and information about the e a m provided in m addition to reduced neighbouring lane interference. Thanks to the colour n ocamera, coloured markings o c n r are detected more easily (even different coloured road markings overseas). o h i
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Driver assist systems Front radar sensors
The front radar sensors are located next to the fog lamps. They are 3rd generation radar sensors with the following features: ● ●
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Integrated in the sensor are 4 radar aerial units. They work based on the long range sensor principle with a sender frequency of 77GHz. The installed sensor heater works in a temperature range of -5°C to +5°C. The radar sensor range is 200m. The horizontal opening angle is 40 degrees.
S470_036
With this new generation of radar sensors, the whole width of a 3 lane road can be scanned even from a distance of approx. 30 m. . Volksw age n AG
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Detection of lane change o h
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The multifunctional camera system detects an impending lane change by the vehicle travelling ahead as it o approaches i its lane boundaries. e h e c
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Stored in the o p camera system are various characteristics, which enable the system to differentiate between car, truck o u n or motorbike. p The lane change is detected irrespective of whether the vehicle travelling ahead enters or exits the a o c r r m same lane as e the camera system. a r
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Distances to detected lane boundaries S470_005
This information is transmitted to the ACC system, adopted by it in its calculation algorithm and serves as a means of determining, with greater precision, what is happening ahead.
Obstacle detection in close proximity The information from the multifunctional camera system and the ultrasound sensors for obstacle detection is required mainly for the close proximity (within 5 m) to make it easier to resume travel. In this range, the radar sensors are not capable of detecting the whole area due to their radiation characteristics and their opening angle.
Monitoring following traffic If a "no following traffic" message has been issued, the rear sensors enable Front Scan to increase the deceleration rate of 3m/s2 to maximum 9m/s 2 during brake intervention following a driver warning.
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Driver assist systems Lane departure warning
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e s l Lane departure warning helps the driver keep the vehicle in lane. The system comprises p a camera in the roof o e h w module holder, the displays in the dash panel insert and a vibration motor in the steeringo wheel. With the aid of the n h o camera (range for this function 80m), the lane boundary markings are detected. If the vehicle appears to be o departing the lane unintentionally, the driver's attention is drawn back to the traffic situation by means of a steering e i , wheel vibration. n e
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Motorways and major roads Activation speed o f65km/h to 250km/h g n i y the system remains active up During deceleration, p o C . t h to 60km/h g i r y p
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Curve radius > 250m u Lane widths of e m 2.5m to 5.0m n t . A lane marking on one side is sufficient to detect C o p y r i the lane g h
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Poor conditions, such as insufficient road markings, dirty or snow-covered road surfaces, excessively narrow lanes or even ambivalent road markings, as is often the case when road works are being carried out on the motorway, lead to the system being temporarily incapable of providing a warning.
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Operation Switching on and off The lane departure warning system is switched on and off with the button for driver assist systems on the front of the turn signal lever and by activating the buttons in the menu of the dash panel insert. If the lane departure warning system detects clear road markings within its system limitations, it changes from a passive (at least one condition has not been met) to an active operating mode.
The lane departure warning control lamp
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lane departure warning switched on and in passive mode
The control lamp indicates the operating status of the lane departure warning system.
Lane departure warning switched on and in active mode
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n Early warning level: y i a b The virtual boundary is set approx. 20 cm before i y w the lane marking. i t h e Normal warning level: s p e The virtual boundary is the same as the lane o marking. h Late warning level: o The virtual boundary is set approx. 20 cm after the e n e lane marking. l
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When the virtual boundary is driven over, a warning m a is issued.
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33
Driver assist systems System design Networking
V331
Key E221 J527 J533 J852 V331
Operating unit in steering wheel Steering column electronics control unit Data bus diagnostic interface Camera control unit Steering vibration motor
h k L
Extended CAN data bus Convenience CAN data bus LIN data bus
PWM k
E221 L
J527 J533 J852 S470_120 h
Steering vibration motor The steering vibration motor V331 is located in the bottom spoke of the steering wheel and is actuated by G. Volksw age n AG CAN the signal from the camera acontrol g e n A unit J852 via d o e w s n s l k o V and by the steering bcolumn electronics control unit via o t g u a y r a e d n t i s r e LIN. o e h t u a s s e l n
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u can choose from three vibration levels with The driver d e t different frequencies: m
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- Weak level – 29hz e l - o Medium level – 34hz h w Strong level – 44hz n s i
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These levels are adjusted via the touchscreen of the o infotainment system. p
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The different frequencies are achieved by PWM m signal m actuation to the steering wheel vibration motor o c r E221. o
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34
e n t .
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S470_076 Steering vibration motor
System function When the lane departure warning system is switched on, the system starts to scan and evaluate the path the road follows in front of the vehicle via the camera. If the vehicle gets close to a recognised boundary line and there is a threat of it departing the lane, the driver is warned by a vibration in the steering wheel. The system only warns once. A second warning is only issued if the vehicle has moved sufficiently away from the relevant boundary line and has then approached it again. In this way, it is possible to avoid continual warnings while driving parallel to a road marking. G. Volksw age n A a g e
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a r a n e If, while the system is active, a turn signal is activated before a boundary line is driven over, the warning is i s t r e o e h t o r suppressed as the a u system assumes that the lane depar ture is intentional. a c s
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y Aside from the steering wheel vibration, the driver of the new Touareg can see a visual representation of detected i a b m r i and violated e (driven over) boundary lines in the display of the dash panel insert. p y e t t
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Active mode: - Road marking detected on left and right
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r y i g h S470_068 t b V y
Active mode: - Road marking detected on right - Road marking not detected on left - Warning threshold on right exceeded
S470_070
S470_064
Passive mode: - Road marking not detected on left and right
A warning is only issued in the case where a road marking is detected on one side if the boundary on that side is violated.
S470_066
35
Driver assist systems The dynamic light assist The dynamic light assist (DLA) from Volkswagen (also designated "masked permanent main beam") is debuted in the new Touareg.
With the dynamic light assist function, the road and edges of the road are illuminated to maximum effect while, at the same time, preventing any dazzling of vehicles travelling ahead in the same and opposite It is based on the already existing systems dynamic direction. The DLA is therefore currently the most . Volksw age n AG n AG d oe a g e w cornering light and headlight range control. level for headlight systems n o l k s innovative development s t g V o y u a b e d with variable light distribution. r a n t i s r o
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Illumination with object in opposing lane - distance to object medium
Illumination when passing an object in the opposing lane In the final approaching phase, the "masked main beam" from the left headlight is equal to the dipped beam position.
S470_058
S470_058a to 058d
36
y V d b
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Light switch in o "Auto" position Main beam actuated i DLA switched , on via touchscreen of infotainment system. o Dark (signal from rain and light sensor G397) p u Speed > 60km/h p
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n i y Example of change in light distribution of headlight due to automatic detection of o C p o p C . r y t i g objects travelling ahead with activated/recognisable lighting. h h g i t
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Illumination without object in own lane
Illumination with object in own lane - distance to object far
Illumination with object in own lane - distance to object medium
S470_060
Illumination with object in own lane - distance to object close In the final approaching phase, the "masked main beam" from the right headlight is equal to the dipped beam position.
S470_060a to 060d
37
Driver assist systems Networking J667
J668
Key E1 G752 J285 J519 J527 J533 J667 J668 J685
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k
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Light switch Dive rate sender Control unit in dash panel insert Onboard supply control unit Steering column electronics control unit Data bus diagnostic interface Power output module for left headlight Power output module for right headlight Display unit for front information display and operating unit control unit Cornering light and headlight range control unit Control unit 1 for information electronics Camera control unit
b h k L m
Display and operation CAN data bus Extended CAN data bus Convenience CAN data bus LIN data bus MOST data bus n AG a g e
J685
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The dynamic light assist is based on the intelligent interplay of multifunctional front camera and camera control unit y i a b m i J852, image processing software and top Xenon p e rheadlight. y e t t
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With the front camera, vehicles travelling ahead (camera range 400 m) and those approaching from the opposite e l o h side (camera range 800m) are detected providing their lights are on. This information is digitally evaluated and the w n exact position and width of the detected vehicles is determined. The system also distinguishes between street lamps, o traffic lights or reflections from side marker posts. This information is sent to the control unit for cornering light and i , vehicle information, such as speed, steering wheel angle or general headlight range control. Together with other lighting conditions, the optimal light distribution is thereby calculated automatically and depending on the situation o p and then sent to the headlight control units. u These are installed directly onto the headlights. p a They have the same design and the same part number. The control units can determine whether they control the left c r e or right headlight by means of the connector m coding. ,
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i e s Based on the calculated light distribution, a special t roller-type mask is now moved between the light source and d a v o i r c u p projection lens in the top Xenon headlight. This prevents anyone from being dazzled, i .e. other traffic users are kept r m o f e n g t out of the light distribution. n . i y C p
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38
o p r y i g h t b V y
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Top Xenon headlight The top Xenon headlight in the Touareg 2011 is the first headlight with permanently masked main beam.
S470_037
S470_038
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The function of the dynamic light assist is realised by the additional, rotating, roller-type mask (shutter) between the c r m e a reflector with the xenon burner and m the lens. In connection with intelligent actuation of the left and right headlight, o m n o this additional masking geometry allows light to be masked only when it could dazzle others. c n r a i
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39
Driver assist systems Area View This driver assist function is debuted at Volkswagen in the Touareg 2011. Area View is a camera-based area capture system and is an enhancement of the reversing camera familiar from the A and B class (Rear Assist). While the reversing camera covers the area behind the vehicle, Area View allows the driver to see the entire area around the vehicle. It offers the driver numerous views and setting modes that he/she can specifically select depending on the traffic situation and according to the information he/she requires.
Design of Area View system Control unit 1 for information electronics J794 and display unit for front information display and operating unit control unit J685
Visual range of right mirror camera R245
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Visual range of rear camera R246 AG. Volksw age n A G d o
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Capturing the view around the vehicle is achieved by four cameras that are integrated cleverly within the vehicle. i , The front camera is located in the front grille, the rear camera is in the handle of the rear lid and the side cameras are installed underneath the side mirrors. o p
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c The cameras have wide-angle lenses and capture the whole area around the vehicle, thus enabling areas to be r m e a mbe seen at all. Since the camera capture areas overlap, an accurate viewed that are either difficult to see or cannot o m n o c n and realistic optical transition between the visual r ranges of neighbouring cameras can be created (so-called bird's o h i e s t eye view with complete area capture). d a v o t i
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S470_122
Ignition/starter switch Operating unit in steering wheel Steering angle sender Rain and light sensor ESP sensor unit ABS control unit Automatic gearbox control unit Control unit in dash panel insert Trailer detector control unit Driver door control unit Front passenger door control unit Rear left door control unit Rear right door control unit Convenience system central control unit Wiper motor control unit Parking aid control unit Onboard supply control unit Steering column electronics control unit Data bus diagnostic interface Display unit for front information from display and operating unit J794 Control unit 1 for information electronics J928 Area view camera control unit R* Radio RCD 550 (introduced later, excluded with J794) R243 Front area view camera R244 Left area view camera R245 Right area view camera R246 Rear area view camera
a Powertrain CAN data bus b Display and operation CAN data bus G. Volksw age n AG e n A g d oe a CAN data bus fw Chassis w s n l k s o o V k Conveniencet g CAN y u a data bus b d r a e n t L LIN data bus i s r e o e h t o m MOST data bus u r a a
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t o The cameras are connected via HSD wires (High Speed Data) to the area view camera control unit. These wiresw i are n t h e used to supply power to the cameras, to control them and to transfer video signals per LVDS (Low Voltage e s l p o e h Differential Signalling). w s
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The connection between the area view camera control unit and the information electronics control unit 1 is by i , means of coaxial cable (CVBS - composite video signal). The data transfer rate of the CVBS connection is approx. 6M Bit/s. t
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a The area view camera control unit relies on a wide range of signals from other control units. The accrued signals o c r r m e a are just displayed optically by the area view camera control unit without having any functional influence or effect m o m n o on other systems (e.g. display of dynamic steering angle dependent guidelines). c n l
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41
Driver assist systems VGA camera Area View has four cameras with wide-angle lenses with the following technical features: ● ● ● ●
Resolution: 640 x 480 pixels (VGA resolution) Opening angle: 190° (greater than half space) ¼ inch CMOS imager chip as sensor Temperature range: from - 40 to 85°C
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The control unit has the task of processing the images o supplied by the cameras and preparing p them for u p display on the RNS 850 screen or radio version a c r RCD 550 (which will be introduced at a later e stage). m This includes removing any distortion from m the o c o supplied images, converting or changing to r individual e t a v perspectives and also displaying static and dynamic i r p r o f guidelines. g s
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The area view camera control unit works with a microcontroller to regulate the processes and a 600 MHz DSP (digital signal processor) to process the camera images.
42
C . t h g
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o S470_004 p r y i g h t b V y
Operation By engaging reverse gear or pressing the parking aid button, the relevant view is shown on the display of the radio or navigation system with touchscreen and has a mini bird's eye view on the left of the display. In the mini bird's eye view, the detailed perspective can be selected by touching the relevant area (front, rear, left or right of vehicle). By touching the roof of the vehicle in the mini bird's eye view, the whole view of the vehicle from above is displayed. Once the relevant region is selected in the mini bird's eye view, the display changes to split screen. A detailed view of the selected area around the vehicle is then shown in the right half of the display. In a second step, softkeys in the pulldown menu on the right side of the screen can be used to select different views. In the mini bird's eye view shown on the left, the camera selection and thereby camera perspective can be selected.
Example view if rear sector is selected y b
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The display contents shown correspond to the infotainment system with German system setting and serve g n i y C p o o merely as an example. Please refer to the corresponding operating manuals for the text contents shown p C y . r t i g h h i t r on the display in the g relevant national languages. b y p V y o f
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43
Driver assist systems Function Area View works in a speed range from 0 to 15km/h. The cameras capture the area around the vehicle once activated. The captured images are straightened out by the area view camera control unit because the raw images from the wide-angle lens cameras are heavily distorted. The angle of view is then adapted to the desired perspective, also by means of image processing. Finally, this corrected image is enhanced with guidelines lksw age n A AG. Voahead. depending on the selected view to show the distances and to project athe G d o g e n path w l k s o
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i s r This prepared image is then shown on the R NS 850 display or the display of radios to be introduced ate e ao later o h t u r a a c s stage. c s e e l n
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If there is a visible distortion of wthe image in the area where neighbouring camera views overlap, the n system has to be recalibrated oin the workshop. The inspection for image distortion must be performed once the air suspension has settled at normal level and with the dampers set to "Comfort".
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d a v o Depending on the selected view, static and dynamic guidelines are displayed. i r c u p r m o f (red and green guidelines) and show the potential path These guidelines make it easier to estimate distances e n g t n . i C p depending on the steering angle (yellow guidelines). y o o p C . t h g
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44
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Display views Bird's eye Vview olksw a n AG a g e
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From the four camera images, the control unit e e o calculates an overall view of the area surrounding the r a c c e vehicle as seen from above through a virtual p camera. t a n y A high quality image is generated here and particular i a b i attention is given to optimising the transitions between y w the four camera views. In this view, a silhouette of the i t h e vehicle as seen from above is superimposed. s p e The driver is thereby allowed to see the area around the vehicle from a bird's perspective, also referred too h as bird's eye view. o l
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Situation
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"Cross traffic" view
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p This function allows the driver to look r y90 degrees to i g h i t r b y the left and right from the front point of the vehicle, p V y o o c l y k b s w d e a t g c e i.e. basically to look around the corner, to assess the e t n o A r P . G traffic situation. Despite the fact that the driver is sitting in the vehicle about 2 metres behind the front camera, this system now allows him/her to see what is happening ahead on the left and right. Area View supports the driver here at exits that are difficult to see and in narrow roads. S470_021 o
C . t h g
For the "rear cross traffic" view, the rear camera is used. It allows the driver to see what is happening from the rearmost point of the vehicle.
Display view
S470_086
45
Driver assist systems "Parking bay" view Situation This view supports the driver when driving forwards or backwards into a parking space, whereby the front camera or rear camera is used respectively. When parking forwards, the view is activated by pressing the park distance control button. When parking backwards, the view is activated by engaging reverse gear.
S470_041
Display view
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"Left and right side" view
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Situation
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With this view, side the driver, e.g. when parking or on offroad tracks. Static guidelines o p indicate to the driver the distance uto an obstacle, e.g. p a a curb. c
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o Both side views can also be activated c simultaneously r o e via the side softkeys. t
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Situation
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o r view "Trailer support" a c
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y This view makes it easier for the driver to hitch up a i a b i trailer. The rear camera is used for this function. The y w i driver sees the area behind t h the vehicle from above. e s Green guidelines in the image provide a means of p e assessing the distance from the hitch to trailer. o A yellow line shows the driverh in which direction the vehicle will move with this steering angle. o e Hitching up the trailer to the vehicle is thereby n e optically supported. s l
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To display this view, it is necessary to toggle in the m a menu. Simply deploying the trailer hitch or hitching up o n the trailer will not result in n the perspective being h i s selected. d
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"Offroad" display Situation This view supports the driver when driving offroad and if difficult obstacles are encountered by displaying the area directly in front of the vehicle from a bird's eye view.
S470_029
Display view
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n AG a g e
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Infotainment o
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t h At launch, the Touareg can be equipped with an infotainment systemi based on the RNS 850 radio and navigation e s system. An infotainment system based on the RCD 550 radio is planned p for a later date. The functions and e information in this book therefore refer only to the system combined with the RNS 850. o r
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Overview of infotainment system
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The central element is the control unit 1 for information u J285 m electronics J794 for the RNS 850 in the versions with o f e n g t . i y C and n without integrated GSM telephone module. J794 p o o p C . r y t i g communicates with most infotainment components via h h g i t r b y y p V o o c the MOST data bus. Further components could be, for l y k b s w d e a t g c e e t o n A r G P . example: -
-
the radio R (radio unit in the "Basic" and "DAB" versions) the DVD changer R161 the TV tuner R78 (TV/DVB-T tuner; depending on country in analogue/digital and purely digital versions) the digital sound package control unit J525 (DYNAUDIO sound package)
a J794 R199
b
c J685
J533
d
e R161
R J525 R78
As display units, the screen in the centre console (display unit for front information display and operating unit control unit J685) and in the dash panel insert (control unit in dash panel insert J285) are connected to the infotainment system via different interfaces.
48
Key J285 J525 J533 J685
S470_500
J794 R R78 R161 R199
Control unit in dash panel insert Digital sound package control unit Data bus diagnostic interface Display unit for front information display and operating unit control unit Control unit 1 for information electronics Radio TV tuner DVD changer Connection for external audio sources
a b c d e
LVDS connection (200 Mbit/s) Display and operation CAN data bus (500kbit/s) MOST data bus (21 Mbit/s) Powertrain CAN data bus (500kbit/s) Extended CAN data bus (500kbit/s)
The DYNAUDIO sound system a
a
Key a b
b
b
c
c
c
d J525 R74
J525 c
60mm treble loudspeaker 100mm mid-range loudspeaker cone 200mm bass loudspeaker 50mm treble loudspeaker Digital sound package control unit Internal microphone (in roof module)
c
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5 loudspeakers on lefthand side of vehicle
S470_046
5 loudspeakers on side of vehicle agright-hand . Volksw e n A n AG G
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2 loudspeakers e in centre of dash panel i s r
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MOST data bus e s s
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m The central element of the DYNAUDIO sound system is a 620 watt amplifier with surround control (digital sound b i r e y p t w package control unit J525). o i n t h It is fitted in the luggage compartment near ethe left-hand wheel housing and has 10 output stages for connecting a e s l p o e maximum of 12 loudspeakers. The amplifier h communicates with the infotainment system via the MOST data bus. l i t
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A microphone built into the roof module detects the noises in the interior. These noises are analysed by the amplifier electronics and the playback signal is then i , adjusted depending on the frequency and sound level. This process is called automatic playback signal adjustment. t
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The surround control (Dolby 5.1, if supported aby the data medium) allows you to set up an optimum surround sound, c r e which faithfully reproduces, for example, concert hall acoustics, in relation to your position inside the vehicle. l
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b p V y Further information about the infotainment system y can be found in self-study programme no. 473 o c l o y k b s w d e a t g c e e t o n "Infotainment in the Touareg 2011". r A P . G
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Glossary ABS Anti-lock braking system Counteracts potential locking of the wheels when the vehicle is braked hard by reducing brake pressure.
CAN The controller area network is an asynchronous, serial bus system and belongs to the field buses. CH/LH Coming home and leaving home Coming home is a function that supports the driver when arriving at his/her home destination by allowing the headlights to stay on for a certain time when the vehicle is exited before switching off automatically. The purpose of this is to illuminate the path to the front door, i.e. to add an element of convenience to coming home, and also to improve the vehicle’s visibility when exiting. On some vehicles, the lights are also switched on when the vehicle is unlocked with the remote key fob in order to light up the path from the front door to the car. This function is called leaving home.
ACC Adaptive cruise control, also called automatic cruise control (ACC), is an enhanced version of the conventional cruise control system (CCS). ANB Automatic emergency braking AQS Air quality sensor RSD Reduced stopping distance ODP The operating and display protocol ODP is used for communication between function control units and operating and display control units. ODP consistently separates the function from the display and control.
DSG Dual clutch gearbox
DVD Digital Versatile/Video Disc lksw age n A G. Vo is wa further development the optical storage G d oof e n A a g e s n s k l o t o V medium with a storage capacity g u of 4.7 GB; with oneBCM b y a r d a n e s i t r e o Body control module sided single layered DVDs (single layer e DVD, DVD±R, h t o u r a a c double s unit In the Touareg, either the onboard supply control DVD±RW) and 8.5 GB; on double-sided, c s e e l p n t u a J519 (BCM1) or the convenience system control unit layered DVDs (dual/double layered, DVD±R-DL, n d y e t i a J393 (BCM2) is meant. DVD-RW±DL) b m r t i
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BEM Battery energy management
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ATA Anti-theft alarm system
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Bluetooth An industry standard developed by the Bluetooth i , Special Interest Group (SIG) for wireless transmission o between devices over short distances. p
ESL Electric steering column lock
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ESP Electronic stabilisation programme The electronic stabilisation programme is a driver assist system that counteracts skidding through targeted braking of individual wheels (also electronic stability program).
LED Luminescent diode, or LED for Light Emitting Diode LIN Local interconnect network The local interconnect network (also referred to as LI N data bus) is the specification for a serial communication system. It was developed especially for the low cost communication of intelligent sensors and actuators in motor vehicles, is based on a single wire bus and can be classified as field buses.
EIL Electronic ignition lock CVBS Composite video, blanking and synchronisation signal This is also referred to colloquially as "colour TV". FlexRay FlexRay is a serial, deterministic and fault-tolerant field bus system for use in the automobile. n AG. Volksw age n AG a g e
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e GPS i s r o h t u a Global positioning satellite system s s e l This was originally ua nmilitary satellite-supported, d e t global orientation and localisation system. t i
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LVDS Low voltage differential signaling This is an interface standard for high speed data transfer.
d oe
s n o t MDF g u a a n Masked r permanent main beam t e e
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p MOST t a n y Media-oriented systems i a transport b i The MOST bus is a serial bus system for transferring y w t audio, video, voice and i data signals via fibre-optic h e s cable. p l
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n GSM e l Global system for mobile communications o h w digital mobile telecommunications Standard for n network that is used mainly for telephony but also o finds application in data transfer and short messaging i , (SMS). s
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ECU Engine control unit
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NM Network management
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P-mode Production mode
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IRM e t Interior monitoring a v
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u PR number m e n t . Production number C o p r y identify the components that are This serves to i g h t b V y It always has three digits and can be installed. o l k s w a g e n A gleaned from the customer service data sticker in the . G luggage compartment and the service booklet.
51
Glossary . Volksw age n AG
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PSR Panoramic sliding roof
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PWM signal Pulse-width modulated signal
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RES button Resume button
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HWS Headlight washer system
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TFT o p Thin-film transistor (type of field-effect transistor)
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TFT display Thin-film transistor display; flat screen UGDO Universal garage door opener
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ESI Extended service interval
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e n t .
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Test yourself Which answer is correct?
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One or several of the answers could be correct.
o t g u a r a n t
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1.
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n y e What type of structure do the device connections have in the MOST bus of the Touareg 2011 to assure t i a b m r i shared data exchange? e t i
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a) Ring topology
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b) Star topology
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c) Bus topology
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d) Mixed topology
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When does reduced stopping distance e t RSD3 occur? a) After emergency braking
i s d o c
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c) During advance warning when the braking system is precharged
3.
e n t .
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.
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How is the dynamic light assist function realised in the top Xenon headlight of the Touareg 2011? a) By a shutter with three different masking plates between the reflector with xenon burner and the lens b) By a curved plate that can be adjusted so that the areas are masked off c) By an additional, rotating roller-type mask between the reflector with xenon burner and the lens
53
Test yourself 4.
What is the purpose of lane departure warning? a) It supports fatigued drivers by keeping the vehicle within the detected lane by means of independent, active steering intervention with the aid of the electromechanical power steering's full steering torque. . Volksw age n AG
G e n A a g
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g u b) It helps the the vehicle in lane. If the vehicle a r threatens to depart from the calculated virtual a n e s i t r e o e h lane, lane udeparture warning applies limited, corrective steering torque. If this measure is not sufficient, an t o r a a c s c s acoustic e and optical warning and a vibration alarm are issued. e l p n
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a b the steering wheel, and drives the m c) It rtakes over the steering when the driver removes his/her hands from i e p y t w vehicle along the centre of the calculated virtual lane. o i l i t
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e d) If there is a danger of the vehicle departing the lane unintentionally, the p driver's attention is reverted back w n o to the traffic situation by means of a steering wheel vibration. c
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How is the area around the vehicle captured by the "Area View" function? i n f o r
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four cameras with wide-angle lenses, two radar sensors at the front nand rear respectively and also n h ultrasound sensors at the front and rear i e s
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o f cameras with wide-angle lenses b) By four g
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h front and two radar sensors at the rear as well i c) By a multifunctional front camera, two radar sensors at y b t the r y p V o o c l y k b s w as ultrasound sensors at the front and rear e d e a t g c e t o r P
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n A . G
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