A question for techs or anyone who may have experienced the issue I'm having with my 2004 XKR.


Last week I got a warning message saying "check rear lights" and "cruise control unavailable". I had read on this forum that it was probably the brake light switch so I brought it in to my dealer. It was indeed the switch and it was replaced. I also had a routine service done.

When I left with the car later that day it almost felt like the E brake was on but it wasn't. I then noticed that it stayed in first gear until over 5000 rpm before it would shift and then it would be fine until I stopped and accelerated again. I know, I should have returned to the dealer right away but I didn't.

I called the service manager and he suggested I disconnect the battery and then reconnect it after a few minutes to reset everything. Didn't help. It shifts fine in the sequential mode but not when I put in in "D" in the normal mode. The "S" button doesn't make a difference either.

I'm going back on Monday and they'll examine it and read any codes but right now I'm stumped.

Any ideas what went wrong?

Thanks all!

Kevin

 

I am not sure of your car is part of a recall but ask you service advisor if any other work was done or see if you have a new sticker under your hood with J004 written on it. J004 is an emissions related recall that updates the ECU and TCM (transmission control modules). I have heard that it has been known to upset some TCMs.

J004 - From the EPA.pdf

Here is more on it from another thread (it is not an XK thread but multiple models had this issue)

https://www.jaguarforums.com/forum/s...highlight=joo4

 

Thanks, Marc.

Jagtec over in the maintainence section of this forum thought it was a faulty or faulty installed stop light switch and it turned out to be exactly that. All is well again.

I'll check out your links re the recall.

Regards.