See also:

Adjusting the volume
Turn the knob until the desired volume is selected. The setting is stored for the remote control currently in use. ...

All around the headliner
1 Emergency Request 2 Panoramic glass sunroof 3 Indicator lamp, front passenger airbag 4 Reading lamps 5 Interior lamps ...

Automatic deactivation during forward travel
The system switches off when a certain driving distance or speed is exceeded. Switch the system back on if necessary. ...