Replacement only (51 31 221 and 51 31 231):
NOTE:
The extent of the conversion work required depends on the car's equipment.
For this reasons, the required work steps may differ from the work steps shown here.
The conversion work must be adapted according to the car's equipment.
For this reasons, the required work steps may differ from the work steps shown here.
The conversion work must be adapted according to the car's equipment.
Unfasten plug connection (1).
Release nut (2) and remove control unit (3).
Feed all leads out of holder (4).
Release expansion rivets (5) and remove holder (4).
Remove rear window button, refer to 61 31 245 REMOVING AND INSTALLING/REPLACING REAR WINDOW BUTTON .