Yes, I saw an article or TSB on a forum somewhere, that the PCM (aka ECU) for the Hemi's in Jeeps for certain years were defective and was likely of the solder connections to break from the circuit board.
If you have the Hemi, then for a trans you have the RFE545 trans, it has a dipstick. The 3.7L have the NAG1/W5A580 transmission, designed by Mercedes, manufactured under license by Chrysler, it is very, very sensitive to fluid level and thus does NOT come with a dip stick and instead a plug on the tube saying its Dealer service only, so customers don't overfill the transmission.
I think the FDCM for the XFR Case were defective as well, with too many suffering cracks in the circuit board. That resulted in the XFR case shifting into neautral and several Commanders/Grand Cherokee rolled away after being parked. The NHTSA threw a fit and that gave us the N23 software update that disables any XFR case shifting if the FDCM fails a self test. Sadly, the software was bad and it was failing perfectly good FDCM's and thus everyone was having their XFR case shifting disabled. The latest software update, P73? supossededly solved the good FDCM's failing the self-test and returning most people's XFR case shifting, if the whole system was still good.
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