The concept
The parking brake is primarily intended to prevent the vehicle from rolling while parked; it brakes the rear wheels.
See also:
Messages after trip completion
Special messages that are displayed during
driving are displayed again after the ignition is
switched off. ...
Activation/deactivation
Press the button. ...
After washing the vehicle
After washing the vehicle, apply the brakes
briefly to dry them; otherwise, braking action can
be reduced and corrosion of the brake discs can
occur. ...