The concept
The parking brake is primarily intended to prevent the vehicle from rolling while parked; it brakes the rear wheels.

See also:
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. ...
Activating/deactivating via iDrive
1. "Settings"
2. "Lighting"
3. "High beam assistant"
High beam assistant
The setting is stored for the remote control currently
in use. ...
Vehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehicle, ...
