No Brake Lights
#1
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Hey guys, I'm the new owner of a '97 XK8, I absolutely love it but I have no brake lights including the third brake light. I have working cruise control, I do have the ABS module errors of no stability or traction control but it's my understanding that's a separate issue (obviously I could be wrong, and I plan to address it soon with the soldering fix and I have a new front/left wheel speed sensor on the way), but those are the only display errors I have, and I just replaced my brake light switch. My other lights all work, taillights, reverse lights, parking lights, license plate lights, headlights, turn signals. So I'm not entirely sure what to look at next. Any ideas?
Thanks so much!
Jon
Thanks so much!
Jon
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#8
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The brake switch has 2 micro switchers 1 for cruise and 1 for brake. It sounds like the brake light side is bad. The way the brakes work is when the switch is activated power is sent to the body processor and the 2 lower brakes light up. The upper brake light on the boot receives power directly from the switch, no module involved.
Since you do not have upper or lower it most likely is no power from the switch.
Since you do not have upper or lower it most likely is no power from the switch.
#9
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It took a bit of digging in the computers but I found it. Here is a great "How To" for repair and testing.
Jag XK8 Brake Switch replacement.pdf
Jag XK8 Brake Switch replacement.pdf
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DavidYau (08-03-2019)
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Other than the brake switch, the stop lamp relay (#5 in the trunk fusebox) is common to all three rear stop lamps. You might check it's seated properly, or swop it with the fog lamp relay (#1 in trunk fusebox).
For the sake of completeness, check also fuses #6 and #8 in the same location.
For the sake of completeness, check also fuses #6 and #8 in the same location.
#12
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Other than the brake switch, the stop lamp relay (#5 in the trunk fusebox) is common to all three rear stop lamps. You might check it's seated properly, or swop it with the fog lamp relay (#1 in trunk fusebox).
For the sake of completeness, check also fuses #6 and #8 in the same location.
For the sake of completeness, check also fuses #6 and #8 in the same location.
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