My light bulb warning light comes on...if I jiggle the key, the seat belt light illuminates, then both go out.


A mile later it repeats. Again and again. After 5 miles there are no problems.


I'm thinking tumbler is worn or ignition switch is bad. Any input?

 

Hi OWRltd,

I'd be happy to have a look at the schematics if you'll tell us the year, model and engine of your Jaguar (it's a great idea to add this info to your signature line using your User Control Panel so others don't have to ask).

Cheers,

Don

 

I didn't think that there might be a difference in model years. Sorry, it is a 1996 XJR

 

Hi OWRltd,

Since the warning lamps indicate electrical problems, I think it is unlikely that a worn tumbler has anything to do with your issue, as long as all the tumblers will turn to allow the key to actuate the ignition switch.

It's possible that your ignition switch is developing problems, but since so many circuits pass through the switch, it seems unlikely that your only issues would be two intermittent warning lamps, but it's possible. You can test the switch at its electrical connector, which is inside the steering column cowl.

Both the seat belt warning lamp power and some bulb failure warning signals (direction indicator lamps) pass through the Body Processor Module (BPM). You might search this forum for reports of problems with the BPM. I think corrosion on the electrical connectors and water ingress have been reported. The BPM is mounted on the firewall/bulkhead behind the glove box, so it's a little bit of a job to access.

Hopefully some other members will have some ideas.

You can download the 1996 X300 Electrical Guide here:

http://www.jagrepair.com/images/Auto.../jagxj1996.pdf


Cheers,

Don