See also:

The concept
The rear view camera assists you when parking and maneuvering in reverse. To accomplish this, the region behind your vehicle is shown on the Control Display. ...

Central locking system
The concept The central locking system becomes active when the driver's door is closed. The system simultaneously engages and releases the locks on the following: Doors. Trunk lid. Fuel ...

Switching on/off manually
Press the button. On: the LED lights up. Off: the LED goes out. If Top View is displayed, switch on the backup camera via the iDrive. ...