Auto Headlamp Sensor
WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
The auto headlamp sensor needs real sunlight to properly register the light level. When auto headlamps are enabled indoors, the headlamps may be turned on. The sensor is located in the instrument panel near the base of the windshield, between the left and right defroster grill. There are no faults set in the EMIC or FCM for a inoperative or missing auto headlamp sensor. Symptoms of a missing sensor or unconnected sensor would be that the headlamps and park lamps turn on when the vehicle is started and there is a high level of ambient light present (I.E. daytime). Auto headlamps should not function in the presence of daylight.