See also:

Switching on/off manually
Press the button. On: the LED lights up. Off: the LED goes out. ...

Resetting the tone settings
All tone settings can be reset to the default setting. 1. "CD/Multimedia", "Radio" or "Settings" 2. "Tone" 3. "Reset" ...

Releasing the parking brake manually
In the event of an electrical power loss or electrical malfunction, you can release the parking brake manually. Secure the vehicle against rolling Before releasing the parking brake manually, ...