See also:

Refueling
Always switch off the engine before refueling; otherwise, fuel cannot be added to the tank and a message will be displayed. Take all precautionary measures and observe all applicable regulation ...

Malfunction
A message is displayed in the instrument cluster. HDC is not available, e.g., due to elevated brake temperatures. ...

Switching off automatically
The system switches off and the LED goes out: ▷ After approx. 160 ft/50 m when driving forward. ▷ Above approx. 22 mph/36 km/h when driving forward. Switch on the system again if nece ...