Q: What does the headlight control sensor do?

asked by on

What does the headlight control sensor do?

If your car has automatic headlights, then it also has a headlight control sensor. Essentially, this is what’s responsible for turning your headlights on and off based on ambient light levels. The sensor is located on the dash near the windshield in front of the driver’s position. It monitors the amount of light outside through the windshield. When it detects dropping light levels, it turns the headlights on.

Tips

  • Don’t cover your dash with anything as it will prevent the sensor from detecting changes in light level.

  • Don’t cover the sensor itself with anything for the same reason.

  • Clean the dash regularly, but don’t use harsh cleansers or they might damage the sensor.

  • A dirty windshield can contribute to false readings by the headlight control sensor.

Was this answer helpful?
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. What does the headlight control sensor do?

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: Q: Where is the camshaft position sensor be located on a 2011 Kia Optima EX GDI?

Hello - the camshaft position sensor is located on the drive-side end of the top of the engine on your vehicle. It is a round black plastic housing - golf-ball size - attached to the engine with one bolt, and...

Q: Car difficult to start, wants to die

Usually when a car is misfiring and running rough, there are a few different things that could be the cause. If the vehicle doesn't have enough air when starting or driving, the vehicle will want to misfire or stumble, there...

Q: I got a alternator replaced on my car and now the Check Engine Light is on with the Battery Light. My headlights are still blinking.

Hi and thanks for contacting YourMechanic. This sounds like there is a loose ground or a wire was not hooked up to the alternator correctly. Check all of the wiring when that was removed when the alternator and battery was...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.