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

See also:
The concept
Indicator/warning lamps
The indicator and warning lamps can light up in
a variety of combinations and colors.
Several of the lamps are checked for proper
functioning when the engine is started ...
Switching off
Press the button repeatedly until the LEDs go
out. ...
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. ...
