See also:

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

Safety switch for the rear
Press the button on the driver's door if children are being transported in the rear. This locks various functions so that they cannot be operated from the rear: safety switch. ...

RDS
RDS broadcasts additional information, such as the station name, in the FM wave band. Switching the RDS on/off 1. "Radio". 2. "FM". 3. "Options" Open. 4. "RDS ...