See also:

Functional readiness of the airbagsystem
When the ignition is switch on, the warning lamp in the instrument cluster lights up briefly and thereby indicates the operational readiness of the entire airbag system and the belt tensioner. ...

Adjusting the volume
Turn the knob until the desired volume is selected. The setting is stored for the remote control currently in use. The vehicle automatically adjusts the volume of the microphone on the telephone ...

Storing
1. Switch on the ignition. 2. Set the desired position. 3. Press the button. The LED in the button lights up. 4. Press the desired button 1 or 2. The LED goes out. If the M button is pressed ...