Automatic driving lights control

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

• Light switch in Position A
• Terminal 15 on
• Rain-light-solar-condensation sensor reports insufficient ambient brightness.

The rain-light-solar-condensation sensor is connected to the Body Domain Controller (BDC) via LIN bus. The Body Domain Controller (BDC) carries out any prompt received to switch the driving lights on or off. 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 of the operating facility for lights or by the rain-light-solar-condensation sensor, provided the ambient brightness is adequate.

Even after Terminal 15 off the side lights can remain on because they were activated by the automatic driving lights control system. The side lights are switched off automatically when the driver's door is opened. When the occupants exit the vehicle from another door, the side lights are switched off when the vehicle's locks are engaged.

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 lights when the vehicle enters a tunnel or a tree-shaded lane.