Four problems related to wiring have been reported for the 2012 Jeep Wrangler. The most recently reported issues are listed below.
Under hard acceleration, like passing a car on the highway, the vehicle goes into limp mode which has nearly caused me to wreck 4 to 5 times due to being unable to accelerate. Once I pull of the road and restart limp mode goes away but the engine light stays on. The dealership says that the wiring harness is the issue. The vehicle has codes popping up about torque management. I would like for this to be fixed free of charge due to the wiring harnesses being an integral part if this vehicle.
Lightning bolt symbol and check engine light come on while driving. Vehicle goes into limp mode and starts running roughly. If turned off and allowed to sit will start up again just fine. Check engine light typically turns off after a couple more trips and runs just fine until it randomly does it again. Has been sometimes minutes, other times weeks between episodes. Have had accelerator position sensor replaced, throttle body replaced, and wiring to throttle replaced. Keeps happening. Has happened when vehicle is parked, sitting at light, normal driving, and while driving at highway speed.
2012 Jeep Wrangler have had intermittent trouble for well over a year. Turn car off and headlights stay on. Finally figured out that if I turn the car back on and roll forward a little I can sometimes turn lights off. Same problem turning the headlights on. Rolling the car a few inches usually corrected the headlights. Windshield wipers will start on their own or stop during use with no warning. This began in late 2014 but the problem was so intermittant we could not duplicate it on demand until August 2015. The dealer replaced the multi function switch and wiring harness but before we even drove out of the parking lot both the lights and windshield wipers were doing the same thing. They kept it a few days and "sealed the cluster". Didn't have a problem for a few weeks and the car is now 700 miles away at school with daughter. Around sept 2015 intermittent issues again but not able to duplicate at dealer. Recently (Jan 2016) the problems are daily and include the headlights going out every time the car makes a turn and then come back on a few seconds later. In addition the turn signal cuts off. Windshield wipers have a mind of their own but the lights are the most dangerous problem. Now that the problem is constant it¿s going back to a dealer but because the car is with daughter away at school it will be a different dealer. We are uncertain about tail lights because this occurs while driving and intermittently but the headlights and turn signal going off while driving through intersections has made this issue a major accident/injury risk.
Had to replace engine wiring harness on my Wrangler and my wife's 2012 Wrangler. Both are rhd. Not covered under warranty. Shame on Jeep.