Automatic driving light actuation, function

The Automatic Driving Light Actuation automatically switches on the driving lights (side lamps, low beams and license plate lamps), depending on the exterior lighting conditions (rain, snow, dusk and darkness).

Function prerequisites:

 Exterior lamp switch in "AUTO" position

 Circuit 15 "ON"

 The sun sensor (B32) signals "Darkness" or the rain sensor (B38) signals "Rain"

Basic prerequisites for automatic driving light actuation are:

 diminishing daylight intensity at dusk

 darkness (tunnel, underground garage, ...)

 rain or snowfall and

 failure of rain/sun sensor ("Darkness" is signaled continuously)

 Fog and other lighting influences, e.g., due to oncoming traffic, do not have any effect on the automatic driving light actuation.

 Automatic driving light actuation when starting a journey and during it

 Automatic driving light actuation with driving lights is only possible when the engine is running (circuit 61 ON).

 When the engine is switched off and the electronic starter switch is in position "2" (circuit 15 ON) only the side lamps and the license plate lamps are actuated.

 Driving light actuation is disabled as soon as one of the basic prerequisites changes, e.g. when changing from darkness to daylight after driving through a tunnel.

 Automatic driving light actuation at the end of a journey or in darkness

 After switching off the engine (circuit 61 OFF) and when the electronic starter switch is in position "2" (circuit 15 ON), only the side lamps and the license plate lamps remain on.

 The exterior lighting is switched off as of key position "1" (circuit 15R).