See also:

The concept
The following can be operated using the buttons and the thumbwheel on the steering wheel: Current audio source. Redial on telephone*. Activation of the voice activation system*. ...

Controls
1 Change the entertainment source 2 Eject CD/DVD 3 CD/DVD drive 4 Change station/track 5 Programmable memory buttons 6 Volume, on/off ...

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. ...