See also:

Turn signal
Do not fold in the exterior mirrors During driving and during the operation of the turn signals/warning flashers, do not fold in the exterior mirror, or else the additional flasher lights ...

Camera
The camera is located near the base of the mirror. Keep windshield clean and clear in the area in front of the interior rear view mirror. ...

BMW Maintenance System
The maintenance system directs you to required maintenance measures and thereby supports you in maintaining road safety and the operational reliability of the vehicle. ...