Headlights won't go off.

asked by on

Headlights won't go off unless I unhook battery. I replaced headlight switch still the same thing. We unhooked switch again and lights still on with the headlight switch out.
My car has an automatic transmission.

It sounds like you have a short in the wiring harness that goes to the headlight switch that is allowing the electricity to bypass the switch. I would recommend enlisting the assistance of a qualified technician who is experienced in electrical diagnosis to test this circuit with a digital multimeter. Once it is determined that there is a short, a portion of the wiring harness will need to be repaired. This can be done by simply adding electrical tape or could be as difficult as cutting out a piece of wire and replacing it with new wire. Either way, it is best to have this repair performed by a professional to ensure that the job is done correctly, comes with a warranty, and prevents an electrical hazard for yourself.

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

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

How do you use the Daytime Running Lights?

If your car is equipped with Daytime Running Lights (not available on all Fusions), they provide substantially better visibility during daytime driving. Unlike your headlights, the Daytime Running Lights are designed to make your car more visible to other drivers...

AC Condenser

Hi There, Based on what you are describing, it sounds like your AC condenser cooling fan is not coming on as it should. As you drive down the road, there is typically enough air blowing through the AC condenser and...

Steering wheel does not center

The problem to me sounds like you have worn out bushings that hold the power steering rack and pinion assembly. This is why your steering wheel gets off center in the direction of the turn. Have the steering inspected and...

Related articles

How Long Does a Distributor O Ring Last?
The The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then ignites the fuel and air mixture in the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 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 pressure sensor B input circuit range or performance...
How to Avoid Back Pain in a Car
If If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from sitting in a car’s seat for a long drive. Sometimes,...