High-beam assistant
The light switch of the operating facility for lights must be rotated to Position A to activate the high-beam assistant. When the driving light is switched on, the activated high-beam assistant transmits a recommendation to the footwell module (FRM) or the Body Domain Controller (BDC) to switch on or switch off the high-beam headlight. The high-beam assistant takes into account lights on approaching and preceding traffic as well as sufficient ambient brightness. The high-beam assistant ensures that the high-beam headlights are activated whenever traffic situations allow.
The high-beam headlight can always be switched on and off through manual intervention.
Limits of the system
The high-beam assistant cannot serve as a substitute for the driver's own judgement regarding use of the high-beam headlights. Thus the headlights must be dipped manually whenever conditions render it necessary to do so. Operation of the high-beam assistant is restricted, or it may fail to operate entirely, under the following conditions:
- Unfavorable weather conditions such as fog or heavy precipitation
- Low visibility road user
- Sharp curves, steep rises and dips
- Crossing traffic or partially hidden traffic on dual carriageways
- Poorly lit towns and intense reflections from road signs
- Low driving speed
- Windscreen dirty in the area in front of the rain-light-solar-condensation sensor
- Windscreen dirty in the area in front of the camera