See also:

Multi-channel playback, surround
Choose between stereo and multi-channel playback, surround. Setting multi-channel playback, surround 1. "CD/Multimedia", "Radio" or "Settings". 2. "Tone" ...

Switching on/off manually
Switching on/off manually Press the button. ...

Long-term vehicle storage
Your service center can advise you on what to consider when storing the vehicle for longer than three months. ...