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

See also:
Playing music
Music search
All tracks for which additional information has
been stored can be accessed by the music
search. Tracks without additional information
can be called up via the corresponding album. ...
Radio
FM
AM
Satellite radio
Presets ...
DTMF suffix dialing
DTMF suffix dialing can be used for gaining access
to network services or for controlling devices,
e.g., to make a remote inquiry of an answering
machine. The DTMF code is needed for this
purpose. ...
