Audi A6 Typ 4G: Overview - Rear Seat Pneumatic System
Note
For repair instructions and test methods for pneumatic components.
Refer to
→ Chapter "Pneumatic System, Checking".

1 - Valve Block 2 in Driver Side Rear Seat -N480-
- Front passenger side: Valve Block 2 in Passenger Side Rear Seat
-N482-
- Removing and installing. Refer to
→ Chapter "Massage Mat Valve Block, Removing and Installing".
2 - Left Rear Multi-contour Seat Compressor -V441- with the Integrated
Driver Side Rear Multi-contour Seat Control Module -J875-
- Front passenger side Right Rear Multi-contour Seat Compressor -V442-
with the integrated Passenger Side Rear Multi-contour Seat Control
Module -J874-
- Removing and installing. Refer to
→ Chapter "Compressor with Multi-contour Seat Control Module, Removing
and Installing".
3 - Module Carrier with Air Cushions For Lumbar Support
- Overview. Refer to
→ Chapter "Overview - Pneumatic System, Module Carrier/Air
Cushion/Lumbar Support".
4 - Massage Mat
- In the backrest cushion
- Overview. Refer to
→ Chapter "Overview - Pneumatic System, Massage Mat".
5 - Valve Block 1 in Driver Side Rear Seat -N479-
- Front passenger side: Valve Block 1 in Passenger Side Rear Seat
-N481-
- Removing and installing. Refer to
→ Chapter "Valve Block 1 in Driver Side Rear Seat -N479-/Valve Block 1
in Passenger Side Rear Seat -N481-, Removing and Installing".
6 - Valve Block 3 In Driver Side Rear Seat -N525-
- Front passenger side: Valve Block 3 In Passenger Side Rear Seat
-N526-
- Removing and installing. Refer to
→ Chapter "Massage Mat Valve Block, Removing and Installing".
Connection Diagram - Rear Seat Pneumatic System

1 - Air Cushion for the Lumbar Support
2 - Left Rear Multi-contour Seat Compressor -V441- with the Integrated
Driver Side Rear Multi-contour Seat Control Module -J875-
- Front passenger side Right Rear Multi-contour Seat Compressor -V442-
with the integrated Passenger Side Rear Multi-contour Seat Control
Module -J874-
3 - Valve Block 1 in Driver Side Rear Seat -N479-
- Front passenger side: Valve Block 1 in Passenger Side Rear Seat
-N481-
4 - Massage Mat
5 - Massage Mat
6 - Valve Block 3 In Driver Side Rear Seat -N525-
- Front passenger side: Valve Block 3 In Passenger Side Rear Seat
-N526-
7 - Valve Block 2 in Driver Side Rear Seat -N480-
- Front passenger side: Valve Block 2 in Passenger Side Rear Seat
-N482-
Overview - Rear Seat Pneumatic System, Module Carrier/Air
Cushion/Lumbar Support

1 - Bolt
2 - Air Cushion for the Lumbar Support
- Removing and installing. Refer to
→ Chapter "Air Cushion for Lumbar Support, Removing and Installing".
- Connect the pneumatic lines. Refer to
→ Chapter "Pneumatic Lines, Disconnecting and Connecting"
3 - Expanding Rivet
4 - Module carrier
- Removing and installing. Refer to
→ Chapter "Module Carrier, Removing and Installing".
5 - Rubber Buffer
- Solenoid valve block mount
- Quantity: 4
6 - Valve Block 1 in Driver Side Rear Seat -N479-
- Front passenger side: Valve Block 1 in Passenger Side Rear Seat
-N481-
- Allocation. Refer to the Parts Catalog.
- Removing and installing. Refer to
→ Chapter "Valve Block 1 in Driver Side Rear Seat -N479-/Valve Block 1
in Passenger Side Rear Seat -N481-, Removing and Installing".
- Connect the pneumatic lines. Refer to
→ Chapter "Pneumatic Lines, Disconnecting and Connecting"
7 - Seat Frame
Overview - Rear Seat Pneumatic System, Massage Mat

1 - Massage Mat
- Removing and installing. Refer to
→ Chapter "Massage Mat, Removing and Installing".
- Press in the pneumatic lines until they audibly engage
- Pull to check whether the coupling is locked in correctly
2 - Clip
3 - Backrest Cushion
- Removing and installing. Refer to
→ Chapter "Cover and Cushion, Separating".
4 - Valve Block 2 in Driver Side Rear Seat -N480-/Valve Block 3 in
Driver Side Rear Seat -N525-
- For massage mat
- Front passenger side: Valve Block 2 in Passenger Side Rear Seat
-N482-/Valve Block 3 in Passenger Side Rear Seat -N526-
- Removing and installing. Refer to
→ Chapter "Massage Mat Valve Block, Removing and Installing".
- Connect the pneumatic lines. Refer to
→ Chapter "Pneumatic Lines, Disconnecting and Connecting"
- Press in the pneumatic lines until they audibly engage
- Pull to check whether the coupling is locked in correctly
READ NEXT:
Preparations for Checking the Lumbar Support Air Cushion for Leaks
Special tools and workshop equipment
required
Pneumatic Repair Set -VAS6618A-
Vehicle Diagnostic Tester
Note
When an a
Removing
WARNING
Follow all Safety Precautions when working with
pyrotechnic components. Refer to
→ Chapter "Pyrotechnic Components Safety Precautions".
Before handling pyrotechni
SEE MORE:
Removing
- Turn the light switch to position "0".
- Press in the tab -1- using a
flat-head screwdriver and pry out the glove compartment lamp
-2-.
- Disconnect the connector -3-.
Installing
Install in reverse order of removal. Note the following:
- Insert the glove compartment l
Overview - Front Brakes, 1LA/1LJ
1 - Brake Caliper
2 - Guide Pin
Quantity: 2
Replacing. Refer to
→ Chapter "Bearing Bushing and Guide Pin, Replacing, Steel Brakes
1LA/1LJ".
3 - Bearing Bushing
Quantity: 2
Replacing. Refer to
→ Chapter "Bearing