Audi 2008 A6 Quattro User manual

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SELF LEVELING SUSPENSION
SETTINGS FOR AIR SPRING SUSPENSION, AND CONNECTING VAS 5051 AND SELECTING
FUNCTIONS
Settings for air spring suspension, and connecting VAS 5051 and selecting functions
Possible level control settings --> Possible level control settings.
Adjusting vehicle level --> Vehicle level, adjusting.
Vehicle jack mode --> Vehicle jack mode.
Operating with something in tow --> Operating with something in tow.
Shipping mode --> Shipping mode.
VAS 5051 , connecting and selecting functions --> VAS 5051 , connecting and selecting functions
Possible level control settings
Driver can set four different level settings:
Automatic
Dynamic
Comfort
Lift
For further details on level settings: Operating instructions.
Vehicle level, adjusting
Vehicle level is set in the MMI.
Switch on ignition.
Press "CAR" function button. The central menu "adaptive air suspension" appears.
Select desired level via control knob.
NOTE: The automatic control procedures are dependent on speed and time. For
example, raising vehicle to the height setting is not possible above certain
speeds.
NOTE: 
Note that not every vehicle level can be selected in every driving situation.
2008 Audi A6 Quattro
SUSPENSION Suspension, Wheels, Steering
2008 Audi A6 Quattro
SUSPENSION Suspension, Wheels, Steering
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For further information on vehicle levels: Operating instructions.
Vehicle jack mode
Before raising vehicle using vehicle jack or lifting platform, the vehicle jack mode must be activated so that the
automatic control procedures of the air spring suspension, do not impede the lifting using vehicle jack or lifting
platform.
Switching on
Switch on ignition.
Press "CAR" function button. The central menu "adaptive air suspension" appears.
Press "SETUP" function button. The menu "adaptive air suspension" appears.
Turn control knob to desired mode and select "ON".
Switch off ignition.
Switching off
Switch on ignition.
Press "CAR" function button. The central menu "adaptive air suspension" appears.
Press "SETUP" function button. The menu "adaptive air suspension" appears.
Turn control knob to "Vehicle jack mode" and select "OFF" to switch off vehicle jack mode.
Switch off ignition.
Operating with something in tow
If towing operation is activated, other vehicle levels can only be actuated with restrictions.
Switching on
Switch on ignition.
Press "CAR" function button. The central menu "adaptive air suspension" appears.
Press "SETUP" function button. The menu "adaptive air suspension" appears.
Turn control knob to desired mode and select "ON".
Switch off ignition.
Switching off
NOTE: Vehicle jack mode is automatically switched off at a vehicle speed above
10 km/h.
2008 Audi A6 Quattro
SUSPENSION Suspension, Wheels, Steering
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Switch on ignition.
Press "CAR" function button. The central menu "adaptive air suspension" appears.
Press "SETUP" function button. The menu "adaptive air suspension" appears.
Turn control knob to "Towing mode" and select "OFF" to switch off towing operation.
Switch off ignition.
Shipping mode
Special tools, testers and auxiliary items required
Fig. 459: Vehicle Diagnosis, Testing And Information System VAS 5051 A
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Vehicle Diagnosis, Testing and Information System VAS 5051 A
Fig. 460: Diagnostic Cable VAS 5051/5A
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Diagnostic cable VAS 5051/5A
Shipping mode is to be activated and deactivated only using tester VAS 5051.
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If shipping mode has been activated, it is not possible to actuate a different vehicle level via MMI.
Activating and deactivating
Connect tester VAS 5051 and select functions --> VAS 5051 , connecting and selecting functions
Then
"Suspension".
"Level control system".
"On Board Diagnostic (OBD) capable systems".
"Control module for vehicle level control system".
"Activating and deactivating Level Control System Control Module -J197- shipping mode".
VAS 5051 , connecting and selecting functions
Special tools, testers and auxiliary items required
Fig. 461: Vehicle Diagnosis, Testing And Information System VAS 5051 A
Courtesy of VOLKSWAGEN UNITED STATES, INC.

Vehicle Diagnosis, Testing and Information System VAS 5051 A
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SUSPENSION Suspension, Wheels, Steering
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Fig. 462: Diagnostic Cable VAS 5051/5A
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Diagnostic cable VAS 5051/5A
Fig. 463: Connecting Diagnostic Cable VAS 5051/5A Connector To Data Link Connector (DLC)
Courtesy of VOLKSWAGEN UNITED STATES, INC.

Connect diagnostic cable VAS 5051/5A connector to Data Link Connector (DLC).
CAUTION: Test equipment must always be secured on the rear seat during a
road test.
Drivers must NEVER operate these tools while driving.
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Fig. 464: Identifying Volkswagen Tester VAS 5051, On Switch
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Switch on tester - arrow -.
Tester is ready for operation when it displays buttons for its operating modes.
Switch on ignition.
Touch Guided Fault Finding on screen.
Select one after another:
Brand
Model
Model year
Version
Engine identification
Confirm entered data.
Then
"Suspension".

"Level control system".
NOTE: If control modules or electric/electronic components were replaced, then
Adaptation of the component must be performed in general in "Guided
Fault Finding".
NOTE: 
Wait until tester has checked all control modules installed in the vehicle.
Press Goto button and select "Function/component selection" function.
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"On Board Diagnostic (OBD) capable systems".
"Control module for vehicle level control system".
"Functions of Level Control System Control Module -J197-".
or
"Suspension".
"Level control system"
"On Board Diagnostic (OBD) capable systems".
"Control module for vehicle level control system".
"Electrical components".
LEVEL CONTROL SYSTEM, SERVICING
Level control system, servicing
Overview of electrical/electronic components and component locations --> Electrical/electronic components
and component locations, overview.
Removing and installing Front Vehicle Level Sensor --> Front Vehicle Level Sensor , removing and
installing.
Rear Level Control System Sensor , removing and installing --> Rear Vehicle Level Sensor , removing and
installing.
Removing and installing Left Front Body Acceleration Sensor G341 and G342 --> Left Front Body
Acceleration Sensor G341 and Right Front Body Acceleration Sensor G342 , removing and installing.
Removing and installing Rear Body Acceleration Sensor G343 --> Rear Body Acceleration Sensor G343 ,
removing and installing.
Removing and installing Level Control System Control Module J197 --> Level Control System Control
Module J197 , removing and installing
Adapting Level Control System Control Module again --> Level Control System Control Module, adjusting
again.
Check body acceleration signal of front/rear body acceleration sensors --> Body acceleration signal of
front/rear body acceleration sensors, checking.
System bleeding or charging --> System bleeding or charging.
Adapt control position again
--
>
Control position, adapting again
.
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Electrical/electronic components and component locations, overview
Fig. 465: Electrical/Electronic Components And Component Locations, Overview
Courtesy of VOLKSWAGEN UNITED STATES, INC.
1 - Right Front Body Acceleration Sensor G342
Removing and installing --> Left Front Body Acceleration Sensor G341 and Right Front Body
Acceleration Sensor G342 , removing and installing
Can be checked in "Guided Fault Finding" using VAS 5051 A
2 - Right front suspension strut (air spring suspension)
With Right Front Dampening Adjustment Valve N337
Removing and installing --> Suspension strut (air spring suspension) with mounting bracket,
removing and installing
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Charging --> System bleeding or charging
3 - Level Control System Control Module J197
Removing and installing --> Level Control System Control Module J197 , removing and installing
4 - Left Front Body Acceleration Sensor G341
Removing and installing --> Left Front Body Acceleration Sensor G341 and Right Front Body
Acceleration Sensor G342 , removing and installing
Can be checked in "Guided Fault Finding" using VAS 5051 A
5 - Right rear air spring
Removing and installing --> Air springs, removing and installing
6 - Right rear shock absorber
With Right Rear Dampening Adjustment Valve N339
Removing and installing --> Shock absorber for air spring suspension, removing and installing
7 - Pressure reservoir
If pressure reservoir is removed, a system bleed of pressure reservoir must be performed beforehand
using VAS 5051 A via "Guided Fault Finding"
Removing and installing --> Pressure reservoir, removing and installing
8 - Rear Body Acceleration Sensor G343
Removing and installing --> Rear Body Acceleration Sensor G343 , removing and installing
Can be checked in "Guided Fault Finding" using VAS 5051 A
Rear Body Acceleration Sensor G343 is installed behind left wheel housing lining in vicinity of upper
shock absorber threaded connection.
9 - Left rear shock absorber
With Left Rear Dampening Adjustment Valve N338
Removing and installing --> Air springs, removing and installing
10 - Left rear air spring
Removing and installing --> Air springs, removing and installing
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Left Rear Level Control System Sensor G76
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Removing and installing --> Rear Vehicle Level Sensor , removing and installing
After loosening, adapt control position again --> Control position, adapting again
Can be checked in "Guided Fault Finding" using VAS 5051 A
12 - Right Rear Level Control System Sensor G77
Removing and installing --> Rear Vehicle Level Sensor , removing and installing
After loosening, adapt control position again --> Control position, adapting again
Can be checked in "Guided Fault Finding" using VAS 5051 A
13 - Left front suspension strut (air spring suspension)
With Left Front Dampening Adjustment Valve N336
Removing and installing --> Suspension strut (air spring suspension) with mounting bracket,
removing and installing
14 - Left Front Level Control System Sensor G78
Removing and installing --> Front Vehicle Level Sensor , removing and installing
After loosening, adapt control position again --> Control position, adapting again
Can be checked in "Guided Fault Finding" using VAS 5051 A
15 - Right Front Level Control Sensor G289
Removing and installing --> Front Vehicle Level Sensor , removing and installing
After loosening, adapt control position again --> Control position, adapting again
Can be checked in "Guided Fault Finding" using VAS 5051 A
16 - Air supply unit with solenoid valve block
Removing and installing air supply unit --> Air supply unit, removing and installing
Removing and installing solenoid valve block --> Solenoid valve block, removing and installing
Front Vehicle Level Sensor , removing and installing
General Information
Vehicles with level control system and/or with gas-discharge headlights have an automatic vertical aim control
system as standard equipment --> 94 - LIGHTS, SWITCHES - EXTERIOR .
To function properly, the vehicle level control system and automatic vertical aim control system require
information about compression travel or rebound travel at front and rear axles.
For this, position of left/right control arm in relation to body is transferred via a coupling rod to Left Front
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