See also:

Display on the Control Display
Switching on the backup camera via iDrive With PDC activated: "Rear view camera" The backup camera image is displayed. The setting is stored for the remote control currently in use ...

Switching between letters and numbers
Depending on the menu, you can switch between entering letters and numbers: ...

Camera
The camera is located on the front of the interior rearview mirror. Keep the area in front of the interior rearview mirror clear. ...