Tail lights not working

Tiny
EDBRYAN
  • MEMBER
  • 2002 JAGUAR XJ8
  • V8
  • 2WD
  • AUTOMATIC
  • 80,000 MILES
My tail lights are not working, however my brake and license plate lights are working fine. Can you tell me what is causing this problem?
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Thursday, October 23rd, 2008 AT 12:00 PM

10 Replies

Tiny
DAVE H
  • EXPERT
Hello,

There is a body module that runs the system its behind the glove box I would remove the wiring connectors and check for corrosion which will cause the issue. Also there are many fuses that need to be checked as well here is guide to help you test the fuses and the wiring diagrams so you can see how the system works and the fuse locations.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

The fuses are all over the place so I gave you all the fuse panel locations and identifications.

Check out the diagrams (Below). Let us know what happens and please upload pictures or videos of the problem.

Cheers
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Thursday, December 31st, 2009 AT 9:41 AM
Tiny
TMAJKA
  • MEMBER
I had two fuses blown. I think the BPM is going out.
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Thursday, August 30th, 2018 AT 12:37 PM
Tiny
EDBRYAN
  • MEMBER
  • 2002 JAGUAR XJ8
  • V8
  • 2WD
  • AUTOMATIC
  • 75,000 MILES
Make tail lights are not working however my brake lights and license plate lights are working. Can you tell me what the problem is?
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Thursday, August 30th, 2018 AT 12:38 PM (Merged)
Tiny
DAVE H
  • EXPERT
Start by checking the bulbs are good
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Thursday, August 30th, 2018 AT 12:38 PM (Merged)
Tiny
DAIGO3D
  • MEMBER
  • 2001 JAGUAR XJ8
I am working on a 01 XJ8 (4.0L Engine) where the tail lights are not working. The bulbs were replaced previously, and after ensuring they were installed properly, checked and found no power to the tail lights. All the other bulbs on both the left and right side boards work fine. All the rest of the lights on the vehicle work fine, too. We checked all the fuses, and looked for information if there was any relay that was responsible for the tail lights, and found nothing. A buddy of mine suggested the Body Processing Module, and another friend has a car lot that we were able to swap one out, and still nothing on the tail lights. We are at a loss, and you are my last hope before the dealer (cringe). Any help would be greatly appreciated.
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Thursday, August 30th, 2018 AT 12:38 PM (Merged)
Tiny
KEN
  • ADMIN
Hey Daigo3d,

It does look like there is a relay in the system, here is a wiring diagram to help you find it.

Please let us know happens so it will help others.

Best, Ken
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Thursday, August 30th, 2018 AT 12:38 PM (Merged)
Tiny
SGPONDER@PTESDALLAS.COM
  • MEMBER
  • 2001 JAGUAR XJ8JAGUAR XJ8
I have a 1998 XJ8L 95,000 mi. The taillights stopped working as well as the plate light. All other lights work. Bulbs, fuses, relays all work. But. This morning when coming into work in very rainy weather my taillight worked for a moment but my brake lights didn't. Help?
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Thursday, August 30th, 2018 AT 12:38 PM (Merged)
Tiny
KEN
  • ADMIN
That has a controller that powers those light circuits, it sounds like it may have a problem.
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Thursday, August 30th, 2018 AT 12:38 PM (Merged)
Tiny
BESTGRIPAJAG
  • MEMBER
ON all jags, from time to time have light problems, Flickering, Not working. In most cases it can be fixed by cleaning the main ground wire, then Presto!
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Thursday, August 30th, 2018 AT 12:38 PM (Merged)
Tiny
FSTRANGER302
  • MEMBER
You have a trunk harness problem it is on the right side trunk hinge the wiring breaks constantly
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Thursday, August 30th, 2018 AT 12:38 PM (Merged)

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