Brake lights seem to be working but when I apply the brake, the light warning appears?

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1998 XK8 Convertible (added by GGG)

 

Mystery car...

BTW you can still use Search for ideas

 

Welcome to the forums Dave,

I've moved your question from General Tech Help to XK8/XKR forum. Members here with the same model will be able to help.

Please follow this link New Member Area - Intro a MUST - Jaguar Forums - Jaguar Enthusiasts Forum to the New Member Area - Intro a MUST forum and post some information about yourself and your vehicle for all members to see. In return you'll get a proper welcome and some useful advice about posting to the forum.

Graham

 

DaveT,

Welcome to the Forum. We'll need a bit of additional info to help.

First a few questions reg. the brake warning light you mention. Does it come with any message on the dashboard? Is the red light on immediately above the message panel. It could be as simple as Handbrake On, or it could be serious as Low Brake Fluid. Check the electrical connector on the ABS module and clean with Contact Cleaner (not WD40). Note that this will cause an initial ABS fault but will clear with driving. (Eventually you'll need to clear the DTC recorded).

BTW When was the last time you changed the Brake Fluid?

BTW 2. I don't remember seeing a brake pad sensor when I did my brake renewal, but that was a while ago. Hopefully other forum members will chime in if this could be a cause.

 

+1 with David. Did you ever do the fix to the rear lights assembly that installs a properly sized (thicker guage) ground wire.(credit to "Brutal" search on his name for detailed instructions).

In case you missed it- Jaguar chose to use a ground wire that is too thin to handle the combined current demands of several bulbs simultaneously. I suspect this.

Several of us, myself included, have posted instructions to accomplish this fix.

***Second thoughts (its late). This is more likely a bad brake switch than a bad ground

John