Hi Everyone,

I just started having the issue with my 2018 JK Ult Sahara.

Issue:
When the car is on (or while driving of with just accessories on), the instrument cluster "resets" and the warning lights light up, wipers turn on, warning chime activates, message "CHECK TPM SYSTEM" is shown. Then it goes back to normal. This happens a few times and not in any specific pattern. My radio is also not working at all -- screen is black no audio heard (Note: I installed an after-market radio (android head unit) a few months ago and there hasn't been any issues until today (May 9, 2021)).

Attempted diagnoses:
I used a bluetooth ODB unit and there were no fault codes registered. I ran a cluster unit self-check and no errors returned (pictured). I've check the fuse box and everything seems to be seated.

Any help would be very much appreciated. Thanks in advance, community.

 

Maybe battery going? Lots of random gremlins would point me to the battery. Is it the original battery? If it is i would look at that as the culprit.

 

I concur that is the first thing I would check. My dash lights and tach went crazy when the battery was dying.

 

Hey, did you find the issue? My 07 is now doing the same thing.

 

Did you find the issue? My 07 is now doing the same thing.