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

See also:
Menu navigation
You can use the thumbwheel and buttons 1 to
navigate through the menus.
▷ Turn the thumbwheel: select a menu item.
▷ Press the arrow buttons: change between
fields.
▷ Press th ...
Switching the system on/off
Press the left or right side of the button
on the CD/DVD player in the rear for the
respective page.
Rear entertainment and screens are switched
on/off.
After switching off the ignition, ...
Volume
"Speed volume": speed-dependent volume
control.
"PDC": volume of the PDC signal* compared
to the entertainment sound output.
"Gong": volume of the signal, su ...
