See also:

Deactivating HDC
Press the button again and the LED goes out. HDC is automatically deactivated above approx. 37 mph/60 km/h. ...

Vehicle information
Owner's Manual Computer Vehicle ...

Activating/deactivating Bluetooth
Bluetooth is not permitted everywhere. Comply with all safety guidelines and regulations. 1. "Telephone" 2. Open "Options". 3. "Bluetooth®" Activating/deactivatin ...