I have a 2007 Grand Cherokee SRT8. Once in a while, the headlights will go on & off quickly. Over the past few months, I have been driving & lost all gauges & electronics inside the car. There were 2 codes when the check engine light was on last month, U1403 & U1411.
The next 2 times, there was no check engine light. When it lost electronics, the engine & transmission are fine, I just had to stop & restart the vehicle to get my cluster working again.
A couple of times when I started it, the lights on the cluster went through the startup cycle a few times, then everything worked fine with no diagnostic lights on.
This morning, I drove my mother to work & it ran fine. When I got back in & started it to come back to work, the gauges didn't work, I had no clock or compass & no EVIC. The only thing showing was the gear shift indicator. I drove a little up the street to pull off & restart, but before I did the gauges started working & I had ESP, BAS & the check engine light on.
Does anyone have any idea what could be causing the problem? I've checked the grounds & I'm not sure what to check next. Possibly a problem the FCM or a short in a harness?
Sorry for the long post, but I have no idea what to check next.