This began as a right rear turn signal replacement. Got the correct Jaguar bulb, and installed. All was well for a few minutes driving, then the fast signal flash came back, but was for the right front signal. I also started getting an odd TPMS display, that literally indicated each tire needed air. The tpms graphic alternately highlights each tire, in rotation.

I did change the right front bulb, but that did not help. Also did a hard reset with battery cables.

so now, neither, right side front or rear bulbs illuminate. Spoke with a Jaguar dealer tech, who wants me to bring it in. He says it may be the “ turn signal module” , that is located under the rear seat cushion.

the car has never had any accidents, or body work. The battery was replaced in med June, with a flooded, Jaguar dealer battery.

any thoughts on this situation?

 

Can't help but wonder about the "new battery"
with the timing of the issues after it's installation.

 

Could be a module or an earth point even. The switch stalk also could be failing, had one fail and replaced in warranty only 2 years old. Not likely the battery as those issues are quite more consistent.

 

There are two ground lug points behind the passenger side wheel (one is easy visible with the wheel off, the other you will need to remove the rear arch cover) - I think you said you checked them. I would make sure that all the lugs are still in good shape and the wires haven't corroded.

 

actually, I did not check them, so that is my next move . Thanks.

 

Any luck with the issue?

 

I am away from the car until July 26. That will be my first opportunity to pull the wheel, and check the grounds. I will update this thread then.

Thanks again for all of the input. Hoping to get a resolution.

 

BAFFLED NO MORE!

My odd right turn signal issue has been resolved. Big thanks to @McJag222 for sending me in the right direction, regarding the two ground points near the right shock.

I pulled the right wheel, and just to the inside frame, near the shock, is a Bolt with two eyelet grounds, goinfpg into the frame body. I had hoped that they would just need to be cleaned and a bit of DeOxit applied. But, as I attend my 12mm socket, to loosen the nut from the frame, the nut and threaded insert, literally fell off, with the grounds attached .(see photos) the red circling shows where the frame attachment was and the grounds.
the Yellow circling is the new temporary negative cable, attached at a second frame bolt.

apparently the steel insert that goes into the frame had simply corroded and was not giving a proper ground.

I utilized a spare MC ground strap, which is too long, to make a temporary ground, affixed to the closest attachment to the frame. This will be very temporary, as I plan to have a competent shop, extract what is left of the sheared ground stud. I can then use a new bolt Ofer stud, to affix the two grounds to the frame.

I took a quick spin, and the right turn signal functions fine, and no warning message on the dash, for either the turn signal malfunction, or the chronic TPMS a warning that was coming on.

Again, big thanks to McJag222, who suggesting checking these grounds.