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

See also:
Visual warning
The approach of the vehicle to an object can be
shown on the Control Display. Objects that are
farther away are displayed on the Control Display
before a signal tone sounds.
A display appears a ...
Image on the Control Display
The traffic area to the left and right is displayed
on the Control Display.
Image on the Control Display
Guidelines at the bottom of the image show the
position of the front of the vehicle.
B ...
Traffic bulletins on the map
"Traffic conditions/gray map" active:
The Control Display changes to a black and
white display. This enables a better view of the
traffic bulletins. The day/night mode is disregarded
...
