I have been having a strange electrical issue with my 07 XKR. Since I left the doors open a few weeks ago while cleaning the car I have been getting all the warning messages flashing on the instrument cluster. Such as battery not charging, eng temp, transmission fault, etc. Along with the check engine light and Codes u0155,103,405,402,100,151,128 and P0500.

My first though was the battery, so I got a new battery and fully charged it before installing it. Still getting the same codes after the new battery. The car runs fine when this starts showing the codes. But if I put the car in park the gear selector is locked and the car will not turn over. Just keeps running through the Faults on the instrument cluster. After sitting for about 15 minutes the car will start and run fine, just keeps showing the codes.

I have cleaned the wheel sensors and replaced the stoplight switch so far. When not driving the car it is always on a battery Trickle charger.

Any ideas what maybe causing this? Thanks for any ideas in advance.

Dave
2007 Jaguar XKR Convertible.

 

Bad earth?

 

Clear the codes, then remove the ODB2 reader.
The reader is most likley the fault.

Vince

 

Years ago, I left my OBDII reader plugged in overnight. I started my car the next morning and all the warning lights went bonkers. After that happened I never left it plugged in again. Problem solved.

 

What @CleverName and @peterv8 said.
and @Stuart S
Unless of course in your cleaning and improving efforts the negative terminal is not clean and secure or you knocked the connectors to the cpus/modules.

 

Thanks for all the things to try. Code reader is only plugged in when pulling the codes. But I did have An auto parts store try to pull the codes originally. When they plugged in their code reader the dash went crazy with alerts and alarms

I will track down every ground location on the car and clean them.

I will let you all know what happens.

Thanks

 

Could it be they pushed one or more pins out of the obd connector on your car as the problem came when they connected their reader?

 

Well it was the ground by the drivers side fuse box. Very little corrosion on it, but must have been enough to cause my issue.

 

Thanks for posting that fix, a lot of people don't, and then just fade awwaaaayyyyyyyyyyy................................ ......................

 

I have the same problem today with my 2007 XKR, where exactly do I find the ground strap on the drivers side fusebox. Do you have a picture , I'n going to try this fix tomorrow. BTW , I just discovered a Jaguar service bulletin related to dead battery problems on the 2007 XKR. It indicates the problem lies in the instrument cluster. It says to return the vehicle to the dealer for warranty replacement, its dated 2007. Have heard of this problem and fix?
Thanks,
Vince

 

There is a 13mm bolt just to the left of the fuse block. Remove that nut and clean it and the stud. If that does not fix it there is also one located in the same location on the passenger side. Be careful when you tighten the nut down they are aluminum and will snap off easy.
If those two don’t fix it there are several in the trunk and rear seat fuse box are once I cleaned the grounds I have had no more electrical issues.
Hope this helps.

Dave

 

Dave, thanks , I will give it a try tomorrow.