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Home >> Audi >> 2012 >> A4 Quattro Wagon (8K5) L4-2.0L Turbo (CAEB) >> Repair and Diagnosis >> Body and Frame >> Seats >> Service and Repair >> Removal and Replacement >> Power Standard Front Seats With or Without Memory Function >> Backrest Adjustment Motor

Backrest Adjustment Motor







Backrest Adjustment Motor

Special tools, testers and auxiliary items required

• Locking compound. Refer to the Electronic Parts Catalog (ETKA)

Removing

• Follow all safety precautions when working on pyrotechnic components.

• Before handling airbag units (for example, when disconnecting the harness connector), the person handling them must "discharge static electricity". For example, by briefly touching the door striker pin.

- Remove the front seat:

• Standard and sport power seat, comfort seat and super sport seat. Refer to => [ Power Standard Front Seat ] Power Standard Front Seat.

- Attach the front seat to the (VAS 6136). Refer to => [ Front Seats, Installing on the ] Front Seats, Installing on the Fixture For Seat Repair (VAS 6136).

- Remove the tunnel side trim. Refer to => [ Trim, Tunnel Side ] Trim, Tunnel Side and sill side trim => [ Trim, Sill Side ] Trim, Sill Side.

- Remove backrest panel:

• Two section backrest cover. Refer to => [ Backrest Cover (Section Two) ] Backrest Cover (Section Two).

• One section backrest cover. Refer to => [ Backrest Cover (Section One) ] Backrest Cover (Section One).

- Mark the angle adjustment of the left and right backrest mounting brackets on the seat as follows:

- Make a permanent mark (line) - arrow B - on the backrest frame - 2 - right at the front edge - arrow A - of the anchor - 1 -.






Do not damage the surface of the anchor when marking it by scratching or denting it.

- Remove the nut - 4 - from the shaft - 3 -.

- Remove the upholstery on the backrest. Refer to => [ Backrest Cover and Padding ] Backrest Cover and Padding.






- Remove the shaft - 3 - in the direction of the - arrow - from the backrest frame - 1 -.

- Disconnect the electrical connector - 6 - on the backrest adjustment motor - 7 -.

- Remove the screw - 2 -.

- Remove the backrest adjustment motor from the bracket - 5 -.

Installing

• Follow all safety precautions when working on pyrotechnic components.

• Before handling airbag units (for example, when connecting the harness connector), the person handling them must discharge static electricity. For example, by briefly touching the door striker pin.

- Before installing, clean the shaft thread - 3 - (for example, with thread cutter).






- Check the position of the backrest frame - 2 - and the anchor - 1 - on the left and right side.

• The left and right backrest frames must be in the position marked before removal - A and B arrows -.

- If the left and right backrest frames are not in the position marked before removal, correct their position accordingly.

- Position the backrest adjustment motor - 1 - on the bracket - 3 -.






- Replace the bolt - 4 -. Coat it with locking compound fluid and tighten it by hand. Refer to the Electronic Parts Catalog (ETKA).

• It must still be possible to move the backrest adjustment motor.

- First slide the shaft through the anchor (tunnel side) as far as the stop - 2 - in the backrest adjustment motor.

- Check whether the profile of the inserted shaft and mount - 2 - in the backrest adjustment motor align.

• If the shaft profile and the mount in the backrest adjustment motor align:

- Slide the shaft through backrest adjustment motor and backrest frame.

• If the shaft profile and the mount in the backrest adjustment motor do not align:

- Connect an external power source (12 Volt) to the backrest adjustment motor - 1 -.

- Rotate mount - 2 - until it aligns with the shaft profile.

- Slide the shaft through backrest adjustment motor and backrest frame.

- Apply locking compound to the threaded section of the shaft. Refer to the Electronic Parts Catalog (ETKA).

- Install the new nut - 4 - on the shaft - 3 - and tighten it.






- Bolt the backrest adjustment motor on the bracket - 3 - and tighten it to the tightening specification.






Further installation is in reverse order of removal, noting the following:

• Make sure the connectors are installed all the way in and are secure.

Connect the battery with the ignition switched on. Pyrotechnic components could deploy after connecting the battery if they were not repaired correctly. Individuals must not be inside the vehicle when connecting the battery.

- Connect the battery ground cable with the ignition turned on.

• If the airbag indicator lamp (K75) indicates a fault after installation, the DTC memory must be checked, deleted and checked again using the Vehicle Diagnostic Tester.

Tightening specifications, refer to => [ Backrest Adjustment Motor Overview ] Backrest Adjustment Motor Overview.

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