See also:

Adaptive brake assistant
In combination with the Active Cruise Control, this system ensures that the brakes respond even more rapidly when braking in critical situations. Refer also to Collision warning. ...

Warning stages
Prewarning This warning is issued, for example, when there is the impending danger of a collision or the distance to the vehicle ahead is too small. Acute warning Warning of the imminent danger ...

Display
The collision warning can be issued in the instrument cluster, in the Head-up Display*, and acoustically. Instrument cluster The vehicle lights up in red: prewarning The vehicle flashes red ...