Overview - Pneumatic System

Connection Diagram - Pneumatic System, Comfort Seats. Refer to CONNECTION DIAGRAM - PNEUMATIC SYSTEM, COMFORT SEATS .

Fig 1: Overview - Pneumatic System

Courtesy of AUDI OF AMERICA, LLC

Rubber Bracket
- For the supercharger
- Insert in the seat pan
- Quantity: 2
Rubber Bracket
- For the supercharger
- Insert in the seat pan
O-Ring
- Replace after removing.
Seat Bolster Inflation Adjuster
- Only available together with the bracket -item 17
- Removing and installing. Refer to SEAT BOLSTER INFLATION ADJUSTER AIR CUSHION, REMOVING AND INSTALLING .
O-Ring
- Replace after removing.
Clip
- Replace after removing.
- For securing the massage mat
- Quantity: 2
Massage Mat
- Equipped on some models
- Removing and installing. Refer to MASSAGE MAT, REMOVING AND INSTALLING .
Massage Function Valve Block
- Equipped on some models
  - Valve Block 1 in Driver Seat - N475-, Valve Block 1 in Front Passenger Seat - N477-
- Removing and installing. Refer to MASSAGE FUNCTION VALVE BLOCK, REMOVING AND INSTALLING .
Bolt
- Not Installed
Backrest Bolster Inflation Adjuster
- Available only with -item 11
- Removing and installing. Refer to LUMBAR SUPPORT WITH AIR CUSHIONS, REMOVING AND INSTALLING, MODULE WITH VALVE BLOCK AND BACKREST BOLSTER ADJUSTER .
Lumbar Support
- Module with air cushions, valve block, and backrest bolster adjuster
- Removing and installing. Refer to LUMBAR SUPPORT WITH AIR CUSHIONS, REMOVING AND INSTALLING, MODULE WITH VALVE BLOCK AND BACKREST BOLSTER ADJUSTER .
Lumbar Support Valve Block
- For lumbar support and bolster adjuster
  - Valve Block 2 in Driver Seat - N476-, Valve Block 2 in Front Passenger Seat - N478-
- Available only with -item 11
- Removing and installing. Refer to LUMBAR SUPPORT WITH AIR CUSHIONS, REMOVING AND INSTALLING, MODULE WITH VALVE BLOCK AND BACKREST BOLSTER ADJUSTER .
Backrest Bolster Inflation Adjuster
- Available only with -item 11
- Removing and installing. Refer to LUMBAR SUPPORT WITH AIR CUSHIONS, REMOVING AND INSTALLING, MODULE WITH VALVE BLOCK AND BACKREST BOLSTER ADJUSTER .
Bolt
- 2.5 Nm
- Quantity: 2
Bolt
- 3.5 Nm
O-Ring
- Replace after removing.
Seat Bolster Inflation Adjuster
- Only available together with the bracket -item 17
- Removing and installing. Refer to SEAT BOLSTER INFLATION ADJUSTER AIR CUSHION, REMOVING AND INSTALLING .
O-Ring
- Replace after removing.
Pneumatic System Compressor
- Driver Multi-Contour Seat Compressor - V439-, Front Passenger Multi-Contour Seat Compressor - V440-
- Removing and installing. Refer to PNEUMATIC SYSTEM COMPRESSOR, REMOVING AND INSTALLING .