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

See also:
Using the door lock
General information
Locking from the outside
Do not lock the vehicle from the outside if
there are people in it, as the vehicle cannot be
unlocked from inside without special knowledge.◀ ...
Switching on/off
Press the button.
On: the LED lights up.
Off: the LED goes out.
The system can issue warnings at speeds above
approx. 40 mph/65 km/h.
The state is stored for the remote control currentl ...
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. ...
