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

See also:
Sound output
Switching on/off
When the ignition is switched off: press ON/OFF
button on the radio.
Muting
When the ignition is switched on or the engine
is running: press the ON/OFF button on the
radio. ...
Central locking system
The conceptThe central locking system functions when the driver's door is closed.
The system simultaneously engages and releases the locks on the following:
> Doors
> Trunk lid
> Fuel ...
Adjusting
Vehicle
Equipment
...
