98000 miles and not a lick of trouble, and then. . .

[mepperson641]

Sounds like you're on your way to solving the problem. One last thought. On 2 different vehicles (F150 and Ford Escape) I've had the dashboard light up with multiple errors after sitting for a day or so. Both times, we had wood rat nests in the engine compartment and multiple wires chewed threw. Wasn't too expensive to repair. But, if like us, you live in a forest it could be an issue as well. I Haven't had this problem with my JT, but then again... it spends most of its days with its top off. So its in the garage.
And, now we have 5 feral cats living on the property. ;-)

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[AustinLonghorn]

I'd vote for a CAN issue as well; the multiple modules freaking out simultaneously could indicate a CAN wiring fault/short somewhere (rodents?).

In the case of my '00 WJ, the fault was internal to the PCM itself, leaking noise onto the bus and preventing any other module from communicating when the ignition was on:

https://www.jeepforum.com/threads/p...p1687-and-instrument-cluster-haywire.4402185/

Symptoms were Christmas lights on the dash, failed ABS, airbag, interior dome lights stuck on, no speedo, no door locks/windows, etc. (because none of the modules could communicate with each other).

 

[Mike White]

Thank you for all the advice.
I'll start trouble shooting and keep you posted.

 

[Uparms]

I had the exact same issue with multiple error lights, speedo and rpm gauges, and inability to shift out of park. I ordered and replaced the cam bus (it’s located behind the glove box on the left side). Part was approximately $60.00. It’s been a month since I replaced it and not one error lights or check engine light. Youtube has numerous videos on swapping these out. Took about fifteen minutes and remember to disconnect the negative battery cables (both primary and aux cables from the primary battery’s negative post.

Ditto. Same thing. I had to tell the dealer to do it. Based upon all the messages here. 2020, Max Tow, 70K miles. Jeep covered it out of warranty. Christmas tree lights, locked in park, drove home with no power steering.

 

[Mike White]

Changed the CAM bus connector. cleared the 38 codes. drove to work, then to Chattanooga and back home. no issues and no alarm lights.

Thank you everyone.

 

[WILDHOBO]

Changed the CAM bus connector. cleared the 38 codes. drove to work, then to Chattanooga and back home. no issues and no alarm lights.

Thank you everyone.

That’s fantastic news. Thanks for sharing. I’d never have thought about that as a solution.

 

[ShadowsPapa]

I had the exact same issue with multiple error lights, speedo and rpm gauges, and inability to shift out of park. I ordered and replaced the cam bus (it’s located behind the glove box on the left side). Part was approximately $60.00. It’s been a month since I replaced it and not one error lights or check engine light. Youtube has numerous videos on swapping these out. Took about fifteen minutes and remember to disconnect the negative battery cables (both primary and aux cables from the primary battery’s negative post.

Usually don't need to replace - just disconnect everything and reconnect. Usually it's just a connection issue.
However, those who do the replacement say the replacement fixes it - of course, because you also had to unplug everything and plug it back in.
The connector array itself isn't usually bad...........

Saw a video online the guy put dieletric grease on all connector bits of the connector behind the glove box yes. instead of replacing it and it all came back normal

Exactly - that fixed mine 2 years ago. No issue since.

 

[ShadowsPapa]

Changed the CAM bus connector. cleared the 38 codes. drove to work, then to Chattanooga and back home. no issues and no alarm lights.

Thank you everyone.

CANbus = Connector Area Network.

Normally no need to replace parts - just disconnect, clean, apply dielectric, reconnect.
Nothing much in that connector array to go bad - just poor connections of the plugs inserted into it.

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