See also:

Adjusting
The parking lamps or low beams must be switched on to adjust the brightness. Adjust the brightness using the thumbwheel. ...

System limits
Personal responsibility The system cannot serve as a substitute for the driver's personal judgment of the traffic situation. In the event of a warning, do not jerk the steering wheel, as you ...

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 necessary. ...