Power Mirror Control Module: Service and Repair

Upper Electronic Module (UEM)/Rear View Mirror, Replacing

Removal

Preparatory information

NOTE:
- As the illustrations in this service information are used for different model years and/or models, some variation may occur. However, the essential information in the illustrations is always correct.
- A rear view mirror with manual function cannot be replaced with automatic anti-dazzle or vice versa. The system will store diagnostic trouble codes (DTCs). The upper electronic module (UEM) is integrated in the rear view mirror.
- Read off data from the control module before replacing the control module. Program this data back into the new control module. Programmed data is read off via VADIS/VIDA vehicle communication.

CAUTION: New software can only be ordered after the control module has been installed in the car. VADIS/VIDA reads off the new control module identity which is required to order the correct software.

NOTE: Always check that the control module and control module box connectors do not have bent or damaged terminals or socket/sleeves. This may have been the cause of a fault.

Preparatory work
Remove the interior lighting.

Removing the rear view mirror/control module







- Remove the cover over the connector for the rear view mirror and control module
- Remove the cable spring using a screwdriver
- For rear view mirrors with manual anti-dazzle: Flip the anti-dazzle button toward the lens.







Disconnect the connector by pressing the catch using a small screwdriver.

Installation

Installing the rear view mirror and control module
Connect the connector.
- The cable spring
- The connector cover
- The interior lighting.

Ordering software
Order software.

Programming the control module
Program the new control module.