See also:

Maintenance
The battery is maintenance-free, i.e., the electrolyte will last for the life of the battery. Your service center will be glad to advise you on questions regarding the battery. ...

In cargo area
Open the right-hand side panel in the cargo area. ...

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 ...