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

See also:
Deleting the button assignments
1. Press buttons 1 and 8 simultaneously for
approx. five seconds.
2. "OK" ...
Requirements
Via the Control Display, set a language that is
also supported by the voice activation system
so that the spoken commands can be identified.
Set the language. ...
Activating a list and creating the setting
Activating a list and creating the setting
On the right side of the steering wheel, turn the
thumbwheel to activate the corresponding list.
Using the thumbwheel, select the desired setting
and ...
