Q: Headlights turn on by themselves

asked by on

My cars headlights are coming on even after I turn them off. Because I went to close my garage door last night and my headlights were on. I put in the key and turned on the ignition to reset the light switch and flipped the high low beam and they finally turned off when I took out my key. Could there be a relay other than the 45 – 46 relay that controls the auto headlight function? Do you know the number in the fuse box and the part number? The dash sensor is not blocked from what I can see. Do you have any other ideas?

Hello. There are only two relays for the headlight control. There may be a problem with the headlight switch malfunctioning. Check to see how long you have the auto shut off timer set to, as it could be set for longer than before. If you are still having problems with this, I would suggest that you have the headlight lighting system inspected by a certified technician, such as one from YourMechanic.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Headlights turn on by themselves

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Can a knock sensor keep my car from starting?

Hello. A bad knock sensor will not keep your car from starting. The knock sensor's purpose is to detect the sounds of pre-ignition in a running engine and convert it to a signal for the electronic control unit (ECU) so...

Q: 2009 Bmw 650i left driver side fog lamp and low beam malfunction...already replaced bulb but light not on in the headlamp

If the headlight circuit uses a ballast, or other control circuitry, the output of the circuit should be tested. If power to the bulb is verified, and is within the Factory Service Manual specification, then the bulb is defective. If...

Q: 1998 Ford Expedition - when I open just the driver side front door the dome light flickers on and off -- why?

The switch in the door frame is probably not making good contact. That is fairly easy to test just by bypassing the switch. If that is not the issue, a simple trace of the dome light circuit will reveal the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...