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

See also:
EfficientDynamics
The launch of the new BMW 7-Series completes the line-up of the entire BMW
range now being equipped with EfficientDynamics technologies fitted as standard.
With its roof, doors, bonnet and side pa ...
Jump-starting
If the car's own battery is flat, your BMW's engine can be started by connecting
two jumper cables to another vehicle's battery. You can also use the same method
to help start another ...
Releasing
With the ignition switched on:
Automatic transmission: Press
the switch
while the brake is pressed or transmission
position P is engaged.
The LED and indicator lamp go out.
The parking bra ...
