The wiring to the sensor can also wear out. If your automatic headlight is not working, you can try to use a book or towel to cover the automatic sensor on the dash which looks like a round black light bulb in the center right below your rear sight mirror. The headlamp off delay is twenty seconds. In order to unravel the cause of the problem, you can check the main fuse which is usually located in the engine compartment, particularly at the power center. Heavy overcast conditions can cause the lights to switch on. The system will activate the lights when the car is driven in a enclosure, such as a parking garage. If your automatic headlights don’t respond to changing lighting conditions, then the ambient light sensor may be the source of the problem. Additional features, such as automatic brights and variable angles, are aided by cameras and additional sensors that can sense oncoming traffic, city lights and the turn of your steering wheel to adjust the direction of the beam. This can be caused by no voltage to the lamps due to faulty relay, module, dimmer switch, headlight switch or wiring shortcoming. Fog lamps, if equipped, will switch off when the driver turns off the engine. Two Headlights Not Working Details problem of Two Headlights Not Working. The sensor can stop working or become faulty if moisture gets into it or fluid is spilled on it. If both headlights don’t work, you have a … If you only see one of the headlights works, that means you have a burnt out headlight, replace it. Start your engine and turn on high beam, and then low beam. It is also possible to find the … There’s a small delay when switching automatic headlights on or off, which is sometimes controllable by the driver. Automatic Light Control turns the lights on whenever the sensor, in the instrument panel, senses dark conditions. Bypassing the …