I need to know why my headlights stay on

EKOLLAR

MEMBER
2000 FORD EXPEDITION
150,000 MILES

The headlights on my ford expedition won't turn off. I have to disconnrct the battery in order to turn off. I tried changing the switch on the dashboard but that's not the problem. Someone told me it may be the daylight saving lamps and that the sensor is in the front grill. What should I do?

4 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,375 POSTS

Hello,

It sounds like the headlight relay is stuck on. Here is a guide and a headlight wiring diagrams so you ca see how the system works.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Here is the fuse panel and relay locations.

Check out the diagrams (Below)

Please let us know what you find.

Cheers, Ken

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Saturday, December 3rd, 2011 AT 7:38 PM

EKOLLAR

MEMBER
1 POST

Yep that was it thanks for your help I love this site.

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Monday, December 5th, 2011 AT 7:08 PM

DHAMPSHIRE

MEMBER
1 POST

Ekollar, what was the issue? I’m having the same issue in my expedition. Did you have to replace the relays?

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Tuesday, June 2nd, 2020 AT 3:00 AM

KEN L

MASTER CERTIFIED MECHANIC
47,375 POSTS

Yes, they did to fix the issue here are the headlight wiring diagrams so you can see how the system works. Check out the diagrams (below). Please let us know what happens.

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