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

See also:
The Appendage Factor
M cars have had what I call a high appendage factor — the feeling that the
car is an extension of the driver. It's typically experienced in cars whose
various systems and characteristics are well- ...
Switching on/off manually
Switching on/off manually
Press the button.
▷ On: the LED lights up.
▷ Off: the LED goes out.
If PDC is displayed, switch on the backup camera
via the iDrive ...
Warning of people in danger
If the system detects a person in the defined
area in front of the vehicle and if there is the danger
of a collision with this person, a warning
symbol appears in the Control Display and
Hea ...
