Hi all, I have a 2012 JK doing around 149K kilometers stock except for the bumpers, fenders and tires (285/70/17). I’m facing an issue, where suddenly all the lamps on the dashboard turns on, the rpm gauge and temperature gauge falls down although I’m driving and the fan starts at the highest speed and very loud and the transmission doesn’t function properly when this issue happens. This started happening a year ago, not very frequent though like once every 5K kilometers. When I turn the ignition off and on again. Everything is fine except for the check engine lamp that remains on for a couple of days then goes off automatically. I’ve had the car checked at a couple of service centers and they found the vehicle storing lots of lost communication errors more than 20 such as lost communication with BCM, TCM and PCM. Both advised that this is a wiring issue and (plugs) apologies I don’t know the technical name for it and both had them all checked, cleaned and revised and had all the errors deleted. One also advised that this is due the BCM and needs to be replaced. The car keeps doing the same issue and still not very frequent however, no it refuses to start whenever I stop the Ignition and start it again. Also when the issue happens i used to stop and start the car and keep driving now when i stop and start the car the issue either keeps happening like 10 times repeatedly or refuses to start, then it starts and drive with the check engine lamp on for a couple of days knowing that the errors are all lost communication. What I noticed is there’s no specific condition that triggers the issue. It started happening while driving. Sometimes when I start the car for the first time at the day. I don’t think it’s the BCM coz I believe it a spare part is broken, the issue would remain forever and won’t pop up every now and then. Sorry for the long post and not know some technical terms. Appreciate ur help.
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