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Brake lights out!

Tiny
IAMSOSCREWED
  • MEMBER
  • 2001 JEEP GRAND CHEROKEE
  • V8
  • 120,000 MILES
The brake lights on my 2001 Jeep Grand Cherokee are out completely. Tail lights and headlights work. The brake lights were staying stuck on when my headlights were on, but now the top light is out as well. I went to the dealership multiple times and after paying far too much $ each time, they tell me the problem was solved. The brake lights would work for a little bit after each repair, but would go out again. This last visit, they said it wasn't a fuse, brake switch, bad bulbs, but it is a short due to the hitch wiring or something and that I'd need to pay $2400 to replace the entire junction block box. Everyone else I've talked to says that can't be right. Please help!
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Wednesday, August 24th, 2011 AT 3:22 AM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
I do think that the dealer has gone down the wrong path with the diagnosis, there will be a set method of checking the problem, fuse power to brake light switch, power through brake light switch, power at brake lights, earth's are intact, faulty trailer plugs can affect wiring, but it is just a case of disconnecting to rule out any back feed, a continuity test down power and earth will check for broken wires and high resistance terminals, all this should be done first.
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Wednesday, August 24th, 2011 AT 7:07 AM

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