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

See also:
Controls
1 Change the entertainment source
2 CD/DVD* drive
3 Eject CD/DVD
4 Change station/track
5 Programmable memory buttons
6 Volume, on/off ...
Oil change
An oil change should be carried out by your
service center only.
...
Programmable memory keys
General informationiDrive functions can be stored on the programmable memory keys and called up
directly, e.g. radio stations, navigation destinations, phone numbers and entry
points into the menu ...
