Exterior light-dependent control of the interior lights, function

Function requirements:

 no undervoltage or overvoltage recognized

 the door contact ON and OFF switch (N70s3) is in the "ON" position,

 "automatic driving lights function" is switched on in the instrument cluster (A1)

Operation

The automatic light functions depend on the rain/light sensor (B38/2). Its signals are evaluated by the front overhead control panel control module (N70). Depending on the ambient brightness the rain/light sensor (B38/2) produces the CAN message "Night" or "Day".

If a fault occurs in the rain/light sensor (B38/2) , the CAN message is set to "Night".

 If the door contact status or light sensor information changes during an automatic light function, this is taken into account immediately.

If there is a fault in the rain/light sensor (B38/2) , the entrance/exit lamps behave as if "Night" were recognized. If an undervoltage or overvoltage exists, the exit lamps always remain switched off.