52 25 041 Removing and Installing/Replacing Backrest Frame on Left or Right Rear Seat

52 25 041 Removing And Installing/Replacing Backrest Frame On Left Or Right Rear Seat







Necessary preliminary work:
- Remove left or right rear seat







Unlock and disconnect plug connection (1) on drive unit for seat cushion tilt adjustment.
Lever out clips.
Feed out wiring harness.







Unlock and disconnect plug connection (1) on drive unit for forward/back seat adjustment.







Release screws (1) on left and right.
Remove backrest frame.

Installation note:
Replace micro-encapsulated screws (1).
Tightening torque 52 25 08AZ.







Replacement only:
- Remove backrest cover for rear seat
- Remove control unit
- Remove lumbar support
- Remove massage mat
- Remove pump for lumbar and massage
- Remove valve blocks for lumbar and massage
- Remove four-bar lever on rear seat backrest.







Removing wiring harness:
Unlock plug connections (1) and disconnect.
Feed wiring harness out of backrest frame.







Unfasten plug connection (1) and disconnect.
Remove connector housing (2).
Lever out all clips and remove wiring harness.







NOTE: The new backrest frame part contains all drives.