See also:

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. ...

Display on the Control Display
Switching on the backup camera via iDrive With Top View switched on: "Rear view camera" The backup camera image is displayed. The setting is stored for the remote control currently ...

Interior motion sensor
For the sensor to function properly, the windows and glass sunroof/panoramic glass sunroof must be closed. ...