Backrest Adjustment Motor

Backrest Adjustment Motor

Special tools, testers and auxiliary items required

• Locking compound fluid (D 000 600 A2)

• Seat Repair Stand (VAS6136)

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. Refer to => [ Power Standard Front Seat ] Power Standard Front Seat.

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

- Remove tunnel side trim panel. Refer to => [ Trim, Tunnel Side ] Trim, Tunnel Side.

- Remove tunnel side trim panel. Refer to => [ Trim, Sill Side ] Trim, Sill Side.

- Remove backrest cover panel. Refer to => [ Backrest Cover ] Backrest Cover.

- 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 cover from the backrest near the backrest hinge. Refer to => [ Backrest Cover and Cushion ] Backrest Cover and Cushion.






- 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 - and remove the backrest adjustment motor from the bracket - 5 - while pushing the lumbar support motor slightly forward.

Installation


• 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 (D 000 600 A2) and tighten it by hand.

• 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 fluid (D 000 600 A2) to the shaft threaded piece.

- 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.






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.