Audi A6 Typ 4G: Overview - Front Seat Pneumatic System
Overview - Pneumatic System, Multi-contour Seat through 08/2012
Note
For repair instructions and test methods for pneumatic components.
Refer to
→ Chapter "Pneumatic Lines, Servicing".

1 - Seat Bolster Inflation Adjustment
- Overview. Refer to
→ Chapter "Overview - Pneumatic System, Seat-/Backrest Bolster Adjuster".
2 - Driver Multi-contour Seat Compressor -V439-
- Front passenger side: Front Passenger Multi-contour Seat Compressor
-V440-
- Overview. Refer to
→ Chapter "Overview - Compressor, Multi-contour Seat through 08/2012".
3 - Backrest Bolster Inflation Adjuster
- Overview. Refer to
→ Chapter "Overview - Pneumatic System, Seat-/Backrest Bolster Adjuster".
4 - Check Valve
- Depending on the version, separate component or integrated in the
multi-contour seat control module
- Remove the external check valve if installing a Multi-contour seat
control module that contains a check valve. Refer to the Parts Catalog.
5 - Massage Mat
- Integrated in the backrest cushion; if defective replace backrest
cushion. Refer to
→ Chapter "Backrest Cover and Cushion, Separating".
- Overview. Refer to
→ Chapter "Overview - Backrest Cushion Massage Mat, Multi-contour Seat
through 08/2012".
6 - Driver Multi-contour Seat Control Module -J873-
- Front passenger side: Front Passenger Multi-contour Seat Control
Module -J872-
- The connection for the restrictor is deleted on the Original
Replacement Part with an integrated check valve and the separate check
value must be removed. Refer to the Parts Catalog.
- Overview. Refer to
→ Chapter "Overview - Valve Block/Module Carrier/Lumbar Support/Fan,
Multi-contour Seat through 08/2012".
7 - Valve Block 1 in Driver Seat -N475-
- For massage mat
- Front passenger side: Valve Block 1 in Front Passenger Seat -N477-
- Overview. Refer to
→ Chapter "Overview - Backrest Cushion Massage Mat, Multi-contour Seat
through 08/2012".
8 - Pulsation Damper
9 - Module Carrier with Air Cushions for Lumbar Support
- Cannot be disassembled
- Overview. Refer to
→ Chapter "Overview - Valve Block/Module Carrier/Lumbar Support/Fan,
Multi-contour Seat through 08/2012".
10 - Valve Block 2 in Driver Seat -N476-
- For massage mat
- Front passenger side: Valve Block 2 in Front Passenger Seat -N478-
- Overview. Refer to
→ Chapter "Overview - Backrest Cushion Massage Mat, Multi-contour Seat
through 08/2012".
Overview - Pneumatic System, Multi-contour Seat from 09/2012
Note
For repair instructions and test methods for pneumatic components.
Refer to
→ Chapter "Pneumatic System, Checking".

1 - Left Seat Bolster Inflation Adjuster
- Overview. Refer to
→ Chapter "Overview - Pneumatic System, Seat-/Backrest Bolster Adjuster".
2 - Left Backrest Bolster Inflation Adjuster
- Overview. Refer to
→ Chapter "Overview - Pneumatic System, Seat-/Backrest Bolster Adjuster".
3 - Valve Block 2 in Driver Seat -N476-
- Front passenger side: Valve Block 2 in Front Passenger Seat -N478-
- For massage mat
- Overview. Refer to
→ Chapter "Overview - Backrest Cushion Massage Mat, Multi-contour Seat
from 09/2012".
4 - Valve Block 1 in Driver Seat -N475-
- Front passenger side: Valve Block 1 in Front Passenger Seat -N477-
- For lumbar support and side wall adjuster
- Overview. Refer to
→ Chapter "Overview - Valve Block/Module Carrier/Lumbar Support/Fan,
Multi-contour Seat from 09/2012".
5 - Massage Mat
- Overview. Refer to
→ Chapter "Overview - Backrest Cushion Massage Mat, Multi-contour Seat
from 09/2012".
6 - Valve Block 3 in Driver Seat -N523-
- Front passenger side: Valve Block 3 in Front Passenger Seat -N524-
- For massage mat
- Overview. Refer to
→ Chapter "Overview - Backrest Cushion Massage Mat, Multi-contour Seat
from 09/2012".
7 - Right Backrest Bolster Inflation Adjuster
- Overview. Refer to
→ Chapter "Overview - Pneumatic System, Seat-/Backrest Bolster Adjuster".
8 - Right Seat Bolster Inflation Adjuster
- Overview. Refer to
→ Chapter "Overview - Pneumatic System, Seat-/Backrest Bolster Adjuster".
9 - Module Carrier, Air Cushions for Lumbar Support
- Overview. Refer to
→ Chapter "Overview - Valve Block/Module Carrier/Lumbar Support/Fan,
Multi-contour Seat from 09/2012".
10 - Driver Multi-contour Seat Compressor -V439- with Integrated Driver
Multi-contour Seat Control Module -J873-
- Front passenger side: Front Passenger Multi-contour Seat Compressor
-V440- with integrated Front Passenger Multi-contour Seat Control Module
-J872-
- Overview. Refer to
→ Chapter "Overview - Compressor, Multi-contour Seat from 09/2012".
READ NEXT:
Connection Diagram - Pneumatic System, Multi-contour Seat through 08/2012
1 - Driver Multi-contour Seat Compressor -V439-
Front passenger side: Front Passenger Multi-contour Seat Compres
Overview - Compressor, Multi-contour Seat through 08/2012
1 - Nut
3.5 Nm
Quantity: 3
Brace rubber-metal mount while tightening
2 - Spring Washer
Quantity: 3
3 -
Overview - Valve Block/Module Carrier/Lumbar Support/Fan, Multi-contour
Seat through 08/2012
1 - Driver Seat Backrest Blower Fan -V388-
Front passenger side: Front Passenger Seat Backre
SEE MORE:
Special tools and workshop equipment
required
Pneumatic Repair Set -VAS6618A-
Vehicle Diagnostic Tester
Note
When an appropriate entry is made in the event memory, you
are prompted in "Guided Fault Finding" to perform a leak check
using the Vehicle Diagnostic Tester.
Then the prepa
WARNING
If the status of the Advanced Airbag System
has changed while the vehicle is moving, the
PASSENGER AIR BAG OFF light blinks for about 5 seconds to catch the driver's
attention.
If this happens, always stop as soon as
it is safe to do so and check the steps described
above.
If the P