Three problems related to engine failure have been reported for the 2012 Jeep Wrangler. The most recently reported issues are listed below.
I love my Jeep, but for the past year we have had a love hate relationship. Today I received a letter indicating that the power control module might need reprogramming. Interesting enough this went bad on my 2012 Jeep a year ago. Shortly thereafter my engine failed. Now that I see there was an issue with the pcm needing reprogrammed it made sense why a Jeep with barely 90,000 miles would have an engine that failed, especially considering that I was never rough with it, and always gave it appropriate oil changes. It took me the better part of a year to pay off the cost of the new engine, and when you've got a car this new, there really isn't a good option besides knuckling down and paying for the fix. I would love to love my Jeep again. When this happened it was very cold outside, my Jeep sat outside overnight. While driving to school the temp gauge pinged. I limped it back to a dealership (no Jeep dealers in my hometown) and eventually found out the problem. After what I thought was an initial fix, it was determined that the engine had actually failed and I subsequently had it replaced at a Jeep dealership. I can provide proof of the replacement if necessary.
Stationary vehicle starts when I open the door without having key in ignition. Stationary vehicle engine fails to shut off when I turn off ignition and remove key. Anti-lock brake system locks up brakes while vehicle is standing still and will not move under any throttle amount because the brakes remain locked up. Vehicle factory alarm turns on and off randomly when drivers door is opened. Windows roll down by themselves while vehicle is turned off. Air conditioner blower (can't say if compressor keeps running or not) randomly shuts off while driving down the road and comes back on a couple of minutes later. Cruise control will not accept speed set but then turns 5 minutes later whether you wanted it to or not. Everything points to the tipm but even with 10's of thousands of complaints fiat/Chrysler still insist there is no Wrangler tipm problem, and u. S. Government oversight groups refuse to do anything about it. (when did this happen date is just the latest occurrence of an ongoing serious safety issue that fiat/Chrysler refuses to acknowledge. .
Cylinder 6 misfire - requires new engine head. Manufacturer has had parts backordered, and sevice centers are instructing customers to continue driving vehicle until part can be replaced. Judging by internet posts this seems to be a common defect that could potentially strand drivers or cause engine failure while in motion. Manufacturer is on 3rd version of part and has not alerted customers to the issue or provided resolution to the continued issue.