Automatic driving lights control

The following preconditions must be satisfied before the driving light can be activated automatically:

• Light switch in "AUTO Position"
• "Terminal 15 on"
• Rain-light-solar-condensation sensor reports low brightness

The rain-light-solar-condensation sensor is connected to the Body Domain Controller (BDC) via LIN bus. The Body Domain Controller (BDC) thereby receives the status of ambient brightness and the brightness in the near field of the vehicle and evaluates it. The Body Domain Controller (BDC) carries out any prompt received to switch the driving lights on or off when the automatic driving lights control are active.

Should no signal be received from the rain-light-solar-condensation sensor owing to a fault while the automatic driving lights control is activated, the Body Domain Controller (BDC) will respond by switching on the driving lights.

Once the headlamps have been switched on by the automatic driving lights control, they can be switched off again with the light switch or by the rain-light-solar-condensation sensor, provided that ambient lighting of adequate brightness is present.

The Body Domain Controller (BDC) only switches on the driving light during low ambient brightness. There may thus be a delayed activation of the driving light when the vehicle enters a tunnel or a tree-shaded lane.