2003 Ford Expedition

Tiny
COJEN5
  • MEMBER
  • 2003 FORD EXPEDITION
Electrical problem
2003 Ford Expedition 6 cyl Four Wheel Drive Automatic 167k miles

The brake lights don't work. I've replaced all bulbs and checked the fuses. I have also replaced the stop light switch attached to the brake pedal. (6 Pin)

Thanks
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Monday, August 2nd, 2010 AT 4:03 PM

9 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Do any of the light work? Is there power to the brake light switch?
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Wednesday, August 4th, 2010 AT 5:51 PM
Tiny
COJEN5
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I have tail lights working.

I also have power out of terminal # 1 & 5 at the brake light switch plug.

Nothing out of terminal #2 when I depress brake pedal.

There is evidence of overheating at ONE of the bulb sockets but not on the wire's. I'm going to cut the 3 wires going to that socket and check the socket for continuity this morning.

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Thursday, August 5th, 2010 AT 7:00 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Before cutting them, check them with a test light.
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Thursday, August 5th, 2010 AT 11:41 PM
Tiny
COJEN5
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Thanks for the advice. I've run out of time and have had to resort taking the vehicle to a repair shop.
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Friday, August 6th, 2010 AT 3:56 PM
Tiny
JACOBANDNICKOLAS
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Would you let me know what you find?

Joe
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Saturday, August 7th, 2010 AT 1:14 AM
Tiny
COJEN5
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Certainly.
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Saturday, August 7th, 2010 AT 8:18 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Thanks. We like to keep that information on file so it helps others.

Take care,

Joe
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Saturday, August 7th, 2010 AT 11:08 PM
Tiny
COJEN5
  • MEMBER
It appears that a wire was "cut" coming from the stop light switch that goes to the stop lights. How this happens I have no idea. I suspect that when I took the car to get an electronic trailer brake assist installed about 2 months ago has something to do with it. I can't comprehend how a wire would cut itself when neatly harnessed with other wires.
Before taking it to the auto shop I did notice a white wire that had been cut. I assumed that it had been joined with the electronic brake assist box. Now magically that same wire is no longer cut.
Chances are I had been driving around since the electronic brake assist was installed without brake lights.
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Thursday, August 12th, 2010 AT 6:22 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Honestly, that is an interesting one. Let us know if you have questions in the future.
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Thursday, August 12th, 2010 AT 11:48 PM

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