Audi A6 Typ 4G: Overview - Front Seat Pneumatic System, Backrest

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 Backrest Blower Fan -V389-
• Removing and installing. Refer to → Chapter "Front Backrest Fan, Removing and Installing".

2 - Rubber Bracket

• For blower fan
• Quantity: 4

3 - Boot

• bonded with backrest padding

4 - Module Carrier

• Module carrier with air cushions for lumbar support
• Cannot be disassembled
• Removing and installing. Refer to → Chapter "Module Carrier with Air Cushions for Lumbar Support, Removing and Installing, through 08/2012".
• Connect the pneumatic lines. Refer to → Chapter "Pneumatic Lines, Disconnecting and Connecting"

5 - Rubber Bushing

• For multi-contour seat control module
• Quantity: 3

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.
• Removing and installing. Refer to → Chapter "Multi-contour Seat Control Module, Removing and Installing, through 08/2012".
• Connect the pneumatic lines. Refer to → Chapter "Pneumatic Lines, Disconnecting and Connecting"

7 - Backrest Frame

8 - Bolt

• 6.5 Nm

9 - Plastic Washer

• Insert in front of the lumbar support bolting between lumbar support bracket and backrest frame

Overview - Valve Block/Module Carrier/Lumbar Support/Fan, Multi-contour Seat from 09/2012

1 - Boot

• Bonded with backrest padding

2 - Air Cushion for Lumbar Support

• Removing and installing. Refer to → Chapter "Module Carrier, Air Cushion for Lumbar Support, Removing and Installing, from 09/2012".
• Connect the pneumatic lines. Refer to → Chapter "Pneumatic Lines, Disconnecting and Connecting"

3 - Expanding Rivet

• Quantity: 4

4 - Module Carrier

• For module carrier with air cushions for lumbar support
• Removing and installing. Refer to → Chapter "Module Carrier, Air Cushion for Lumbar Support, Removing and Installing, from 09/2012".

5 - Rubber Buffer

• Valve block mount
• Quantity: 4

6 - 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
• Removing and installing. Refer to → Chapter "Valve Block for Air Cushion for Lumbar Support, Seat and Backrest Bolster Adjuster Assembly, Removing and Installing, from 09/2012".
• Connect the pneumatic lines. Refer to → Chapter "Pneumatic Lines, Disconnecting and Connecting"

7 - Backrest Frame

8 - Rubber Bracket

• For blower fan
• Quantity: 4

9 - Driver Seat Backrest Blower Fan -V388-

• Front passenger side: Front Passenger Seat Backrest Blower Fan -V389-
• Removing and installing. Refer to → Chapter "Front Backrest Fan, Removing and Installing".

10 - Bolt

• 6.5 Nm

11 - Plastic Washer

• Insert in front of the lumbar support bolting between lumbar support bracket and backrest frame

Overview - Front Seat Pneumatic System, Massage Mat

Overview - Backrest Cushion Massage Mat, Multi-contour Seat through 08/2012

1 - Massage Mat

• Integrated in the backrest cushion; if defective replace backrest cushion. Refer to → Chapter "Backrest Cover and Cushion, Separating".

2 - Backrest Cushion

• Removing and installing. Refer to → Chapter "Backrest Cover and Cushion, Separating".

3 - Valve Block 1 in Driver Seat -N475-/Valve Block 2 in Driver Seat -N476-

• For massage mat
• Front passenger side: Valve Block 1 in Front Passenger Seat -N477-/Valve Block 2 in Front Passenger Seat -N478-
• Removing and installing. Refer to → Chapter "Massage Mat Valve Block, Removing and Installing, through 08/2012".
• Connect the pneumatic lines. Refer to → Chapter "Pneumatic Lines, Disconnecting and Connecting"

4 - Lumbar Support Module Carrier

5 - Connector

• For pneumatic line
• Disconnecting. Refer to → Chapter "Pneumatic Lines, Disconnecting and Connecting".

Overview - Backrest Cushion Massage Mat, Multi-contour Seat from 09/2012

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

• Quantity: 2
• Replace

3 - Backrest Cushion

• Removing and installing. Refer to → Chapter "Backrest Cover and Cushion, Separating".

4 - Valve Block 3 in Driver Seat -N523-

• Front passenger side: Valve Block 3 in Front Passenger Seat -N524-
• For massage mat
• Removing and installing. Refer to → Chapter "Massage Mat Valve Block, Removing and Installing, from 09/2012".
• Connect the pneumatic lines. Refer to → Chapter "Pneumatic Lines, Disconnecting and Connecting"

5 - Valve Block 2 in Driver Seat -N476-

• Front passenger side: Valve Block 2 in Front Passenger Seat -N478-
• For massage mat
• Removing and installing. Refer to → Chapter "Massage Mat Valve Block, Removing and Installing, from 09/2012".
• Connect the pneumatic lines. Refer to → Chapter "Pneumatic Lines, Disconnecting and Connecting"

6 - Rubber Buffer

• Valve block mount
• Quantity: 6

Overview - Front Seat Pneumatic System, Seat-/Backrest Bolster Adjuster

1 - Multi-contour Seat

2 - Seat Bolster Inflation Adjustment

• Quantity: 2
• Removing and installing. Refer to → Chapter "Seat Bolster Adjuster, Removing and Installing".

3 - Expanding Rivet

• Quantity: 2

4 - Expanding Rivet

• Quantity: 2

5 - Backrest Bolster Inflation Adjuster

• Quantity: 2
• Removing and installing. Refer to → Chapter "Backrest Bolster Adjuster, Removing and Installing".
• Connect the pneumatic lines. Refer to → Chapter "Pneumatic Lines, Disconnecting and Connecting"

6 - Bolt

• 1.1 Nm
• Quantity: 2

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