See also:

When the vehicle is parked
If you still want to view the time, external temperature and odometer reading briefly after the remote control has been taken out of the ignition lock: Press button 1 in the instrument cluster. ...

CD/multimedia
CD/DVD drive Music collection External devices Tone ...

Operation
Adjusting the volume Turn the knob until the desired volume is reached. The setting is stored for the remote control currently in use. The vehicle automatically adjusts the volume of the microphon ...