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

See also:
Instrument panel in Black Panel technology.
Like so many aspects of the new BMW 5-Series sedan, its instrument cluster
combines BMW tradition with advanced, beautiful new executions. Here the entire
cluster is in a high-resolution Black Pan ...
Reference
This chapter contains technical data, short
commands for the voice activation system, and an
index that will quickly take you to the information
you need. ...
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. ...
