See also:

Activating HDC
Press the button; the LED above the button lights up. ...

Switching off automatically
The system switches off and the LED goes out: ▷ After approx. 165 ft/50 m when driving forward. ▷ After approx. 22 mph/35 km/h when driving forward. Switch on the system again if nece ...

Resetting the tone settings
1. "CD/Multimedia", "Radio" or "Settings". 2. "Tone". 3. "Reset" ...