Five problems related to service engine light on have been reported for the 2015 Jeep Renegade. The most recently reported issues are listed below.
The headlights were on too long while the engine was off causing a dead battery. No big deal I thought. . . I jumpstart the car per owners manual instructions (it has a complex battery so even though I've jump started many different vehicles I wanted to make sure there weren't special procedures, it ended up being pretty standard). When it died it was in a garage so I had to manually unlock the gear selector to put the car into neutral to push it into position for a jump connection. I put the car in park and let the battery charge up a while. Once the car charged up enough, it started right up. At this point I thought I was in the clear, that's when the service engine light and service transmission light came on. The engine is running fine, transmission was fine before the battery died. Not only that, but I could not move the vehicle. It was locked into park. I was blocking the road in my neighborhood while I was manually unlocking the gear selector, I finally get the car to shift into drive and tried to accelerate. Only the engine would rev, no movement. Try to reverse, same thing. At this point I couldn't get the car back into park. I push the car back into the garage to get it out of the way and go to turn it off. The Renegade (push button start) will not let you turn the car off in any gear but park. It was stuck in neutral. After struggling more to force it back into park, I finally get it and was able to turn the car off. I'm lucky it didn't get stuck in d or r if it started working! I've never had such an experience jumpstarting a car and this is a huge safety concern. Luckily I was strong enough to push the car back out of the way, otherwise it would be stuck there indefinitely until a tow came. I've read numerous other complaints of this in online forums. Each one said a dealership had to reset the cars computer to make it work again.
I had the service engine light come on in my vehicle. I took it to get it looked at and they ran a diagnostics test on it. The thermostat had to be replaced. Not even 9 months later, the same thing is happening again. The service light came on, it was checked, and now my thermostat needs to be replaced again. I am not happy about this. I was driving when this happened.
Service engine light came on, code p0128, faulty thermostat. Seems to be a common problem.
Among other issues, the engine cuts out while driving. This has happened five times to me, and all appear to occur while making turns at low-moderate speed (<30mph); this is the only consistent factor when the engine cuts out (does not appear to be affected by weather or drive/run time). The first time occurred around 30k miles - the engine lost power while making a right turn on local streets. Vehicle's display flashed a number of warning lights before indicating "vehicle not in shift to park. " electrical system appeared fully functional. I was able to drift to the side of the road and restarted my car after multiple attempts. The service engine light and electronic throttle control warning remained. The next restart removed the etc warning. The service engine light was removed after 4 restarts (with regular driving). I brought the car to the dealership, where they updated a module and I had to pay to clean the etc sensor (it was allegedly "sticky" and triggering a false warning). Recently, within the last week, the engine has cut out on me 4 times. The first two instances were back-to-back (one on exiting a roundabout), followed by a right-hand turn @ approx. 37200 miles. In both instances I was in the far-right lane and able to drift to safety. The engine stuttered upon trying to push-to-start but I was able to restart the engine after few attempts. The next morning, "oil low" flickered and "traction control off" lit until engine restart. Oil was/is not low. At 37400 miles, the engine died while making a left-hand turn on a 5-lane street at night. At 37450 miles, the engine died in the morning while making a right-hand turn on a main road. All of these instances occurred without any warning (other than "vehicle not in shift to park" after engine cut out) and without loss of electrical systems. I do not feel safe driving this vehicle.
Purchased the car on 7/28/15 thinking that this would be one solid reliable vehicle. Day 3 after 130 miles, the service engine light came on on its own, the four wheel drive went back to a two wheel drive. Although vehicle didn't stop or jolt in the middle of highway but could feel the sudden loss of power. Took it to dealer, still sitting there, apparently needs a whole transmission component replacement and some harness replaced. Super unreliable car! not sure if it will do same thing again. Glad it didn't stop in middle of highway! Jeep needs to recall these vehicles before somebody dies! not sure why safety officials are not taking this seriously yet even after so many complaints on a brand new model car!.