Have messages on 2003 xkr in green. As above and need to drive to NYC. When car turned off and on messages go away but return on some drives but not others

 

Since you don’t have a signature we don’t know where you are, but before you leave for NYC have your battery tested…you are in the X150 forum, probably need the X100 forum for a 2003.

 

Welcome to the forum Chip,

I've moved your post to the correct section.

The problem is going to be your brake light switches, there is no safety issue.

A search will reveal many posts on this, you can start here https://www.jaguarforums.com/forum/x...esolved-36309/

 

When this issue occurs (as it eventually does to ALL of these XK8s / XKRs), it is much better (and much cheaper) to replace the two mediocre-quality microswitches in your factory brake pedal switch assembly with two much more robust microswitches rather than purchasing a new brake pedal switch assembly that was made many years ago with those same two mediocre-quality microswitches. One source for much more robust microswitches is www.mouser.com....

 

Can't comment on long-term quality, but I had this exact issue with my 2002 recently, and replaced the entire brake switch assembly with a Uro parts copy.
https://www.rockauto.com/en/moreinfo...=10474&jsn=418

which you may prefer if you want your car to have less downtime or aren't handy with a soldering iron.

I found the swap itself a lot easier than folks report on this website, but I strongly recommend having a reliable second pair of hands up top to guide the nuts onto the threads and tighten things down. I imagine it would have been an absolute #$%^er of a job on my own. With two people, one in the footwell and one in the engine bay, it took us about ten minutes to remove and replace the unit.

 

I had the same errors pop up, and I did the micro-switch swap a number of years ago, easy to change the switches if you're good with a soldering iron. Maybe a few minutes time. The good switches (wish I could remember where I got them!) are pretty cheap...less than $2 for the set, but I had to buy 10 of them i think.
still an incredible deal, compared to the price of the entire module.

Getting the module out, and back in? Yeah, that's a real fun job unless you're the size of a 10yr old. And VERY limber. Definitely beat the stupid expensive dealer labor cost, but be prepared to do some bodily maneuvers that would make a professional contortionist wince.
I did it solo, but i believe having an assistant would have made it go significantly faster (i.e less time crammed upside down inside the driver leg area) and would have made not quite as taxing on this old bag-o-bones.

 

I can confirm that two fat blokes in their 30s and 40s did this in 10 minutes without much fuss.

 

This is the old thread that was quite helpful to me, maybe it will be to you as well...

https://www.jaguarforums.com/forum/x...ics-faq-37758/

 

I can confirm that when I did it, It took me a couple of hours. This was one of the few repairs where I didn't make a video. I started off trying to make a video, but I struggle so much trying to get the bracket back in place I just gave up on the video and focused on trying to reinstall the bracket. The video would have been 2 hours long and half of it would have been bleeped cuss words.

In my case the problem turned out to be the little bar on the brake pedal that presses on the switches. It was in the way and I couldn't get the bracket to fit into the holes in the firewall. The secret was to push down slightly on the brake pedal. Once I did that, the bracket slipped right into place. But I struggled with it for a very long time.

 

I found it easier to remove the switch from the mounting bracket.

 

Well I'll be damned, Reverend Sam has returned to the fold. Have you acquired another X100?

 

Yep - with two people, with me in the footwell I depressed the brake pedal and removed the switch while my buddy unbolted up top. that way I could feel exactly where it needed to be. I then immediately replaced with the new one while I had muscle memory and pushed it up into place while holding the pedal, and my buddy quickly got the nuts on and torqued it down. Its one of those jobs that is actually easier if you do it really speedily, but with two handy people on it. It also helps to be reasonably flexible.

Absolutely do this with two people and make sure hte person up top knows how to thread a nut onto a bolt without crossthreading it or dropping it. i.e. not a clumsy numpty. Cos if they do that while you are down there holding the switch and forcing it up into position while holding the brake down, you will have an argument with them . I am lucky cos my buddy is an engineer who works on surgical robots.