Audi A4: Driver/Front Passenger Seat Adjustment Control Head -E470-/-E471-, Removing and Installing

Special tools and workshop equipment required

• Trim Removal Wedge -3409-

Removing

- Carefully pry the actuators -1 and 2- from the retainer using the -3409-.

- Remove the seat side trim on the side sill side. Refer to → Chapter "Seat Side Trim on Side Sill Side, Removing and Installing".

- Remove the bolts -arrows-.

- Remove the control head from the seat side trim on the side sill side.

Installing

Install in reverse order of removal.

Installation instructions: For example tightening specifications, replacing components. Refer to → Chapter "Overview - Seat Pan, Power Seat Adjustment Actuator/Switch".

Driver and Front Passenger Seat Lumbar Support Adjustment Switch -E176-/-E177-, Removing and Installing

Removing

- Remove the seat side trim on the side sill side. Refer to → Chapter "Seat Side Trim on Side Sill Side, Removing and Installing".

- Remove the screws -arrows- and remove the switch module.

Installing

Install in reverse order of removal and note the following:

Installation instructions: For example tightening specifications, replacing components. Refer to → Chapter "Overview - Seat Pan, Power Seat Adjustment Actuator/Switch".

Lumbar Support Adjustment Motors -V125-/-V126-/-V129-/-V130-, Removing and Installing

Special tools and workshop equipment required

• Pop Rivet Pliers -VAG1753B-
• Engine/Transmission Holder - Seat Repair Fixture -VAS6136-
• Hand drill
• Protective Eyewear

Removing

  WARNING

Risk of injury due to involuntary deployment.

• Pay attention to the safety precautions when working with pyrotechnic components. Refer to → Chapter "Safety Precautions when Working with Pyrotechnic Components".
• Before handling pyrotechnic components (For example, disconnecting the connector), the person handling it must "discharge static electricity". For example, this can be done by briefly touching the door striker.

- Remove the front seat. Refer to → Chapter "Front Seat, Removing and Installing".

- Fasten the front seat on the -VAS6136-. Refer to → Chapter "Front Seat, Mounting on Fixture for Seat Repair".

- Remove the backrest seat cover and cushion. Refer to → Chapter "Backrest Cover and Cushion, Removing and Installing".

Schukra Lumbar Support

- Detach the connectors -1 and 2- at the lumbar support forward/back and height adjustment motors.

- Cut through the cable tie and free up the wiring harness on the lumbar support.

  WARNING

Risk of eye injury.

Wear protective eyewear!

- Drill out the rivet -3-.

Brose Lumbar Support

- Detach the connectors -1 and 2- at the lumbar support forward/back and height adjustment motors.

- Cut through the cable tie and free up the wiring harness on the lumbar support.

  WARNING

Risk of eye injury.

Wear protective eyewear!

- Drill out the rivet -3-.

Continued for All Versions

- Move the lower lumbar support -1- forward, pivot it out of the backrest frame, disengage it from the backrest frame -2--arrows- and remove it.

Installing

  WARNING

Risk of injury due to involuntary deployment.

• Pay attention to the safety precautions when working with pyrotechnic components. Refer to → Chapter "Safety Precautions when Working with Pyrotechnic Components".
• Before handling pyrotechnic components (For example, connecting a connector), the person handling it must "discharge static electricity". For example, this can be done by briefly touching the door striker.
• Follow all the instructions when installing the front seat. Refer to → Chapter "Front Seat, Removing and Installing".

- Engage the lumbar support -1- at the top in the backrest frame -2--arrows-, pivot the bottom toward the rear and insert in the backrest frame.

- Rivet the lumbar support to the backrest frame.

Further installation is the reverse order of removal.

Installation instructions: For example tightening specifications, replacing components. Refer to → Chapter "Overview - Front Backrest, Lumbar Support".

Seat Functions Control Module, Removing and Installing

Removing

- Switch off the ignition.

- Unscrew the front seat and tip to the rear with the wires attached. Refer to → Chapter "Front Seat, Removing and Installing".

- Release retaining tabs -arrows-.

- Remove the control module -1- from the bracket.

- Release the connector safety catch and disconnect the connectors -2-.

Installing

- If the control module was replaced, follow the sequence when connecting the connectors.

- First connect the connector -5- (coding connector), then connect the other connectors -1 to 4-.

Further installation is the reverse order of removal.

Seat Cushion Fan, Removing and Installing

Special tools and workshop equipment required

• Pop Rivet Nut Pliers -VAS5073A-
• Engine/Transmission Holder - Seat Repair Fixture -VAS6136-
• Mini-grinder, commercially available
• Protective Eyewear

Removing

  WARNING

Risk of injury due to involuntary deployment.

• Pay attention to the safety precautions when working with pyrotechnic components. Refer to → Chapter "Safety Precautions when Working with Pyrotechnic Components".
• Before handling pyrotechnic components (For example, disconnecting the connector), the person handling it must "discharge static electricity". For example, this can be done by briefly touching the door striker.

- Remove the front seat. Refer to → Chapter "Front Seat, Removing and Installing".

- Fasten the front seat on the -VAS6136-. Refer to → Chapter "Front Seat, Mounting on Fixture for Seat Repair".

  WARNING

Risk of eye injury.

Wear protective eyewear!

- Carefully separate the pop rivets -arrows- using a mini grinder.

- Remove the cover -1- for the fan.

- Disconnect the connector -4-.

- Disengage the tabs -3- on the seat cushion fan and remove the fan -2-.

- Spray the rubber fasteners -1- for the elastic fan bracket with silicone-free lubricating spray and remove the fan from the rubber fasteners.

Installing

Install in reverse order of removal.

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