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

See also:
DSC OFF
When DSC OFF, is active,
driving stability is limited during acceleration
and when driving in bends. ...
Context help - Owner's Manual to thetemporarily selected function
The relevant information can be opened directly.
Opening during operation via iDrive
To move directly from the application on the
Control Display to the options menu:
1. Press the button or move ...
Radio
FM
AM
Satellite radio
Stored stations
...
