XC90 AWD V8-4.4L VIN 85 B8444S (2005)
Rear view mirror, replacing
Note! A rear view mirror with manual function cannot be replaced with automatic anti-dazzle or vice versa. The car will store diagnostic
trouble codes (DTCs).
The upper electronic module (UEM) is integrated in the rear view mirror. To remove the rear view mirror, see or the rear view mirror.
Replacing the upper electronic module (UEM), or the rear view mirror
Note! 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 VIDA vehicle communication.
Caution! New software can only be ordered when the control module is installed in the car. VIDA reads off the new control module identity
which is required to order the correct software.
Always check the control module and connector on the control module box for bent or damaged pins or sockets. This may have caused the fault.
Removing the control module
Remove the lens.
Remove the 2 screws at the front edge.
Press the 2 rear catches forward.
Press two of the catches on one side inwards. Remove the bulb holder.
Disconnect the 2 connectors.
Disconnect the ground lead.
Hint: Only certain versions of the upper electronic module (UEM) have a ground lead.