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. ...

Activation/deactivation
Press the button. ...

Front seats: adjusting the height
Adjust the head restraint so that its center is approx. at ear level. Electrical Electrical Adjusting electrically. ...