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

See also:
Audio/video playback
Audio
Audio can be played back via rear entertainment
from any source in the vehicle.
Operation is the same as for the front audio playback.
Video
Video can be played back in the rear from the
...
Safety
BMW's inflatable tubular Head Protection System includes side curtain-type
airbags for the first and second rows. Front-seat side-impact airbags are
installed, and rear side-impact airbags are opt ...
Initializing
In rare cases, it may become necessary to initialize
the Integral Active Steering.
The warning lamp lights up. A Check
Control message is displayed.
1. With the engine running, turn the steeri ...
