Started getting a loud ticking sound on driver side of engine. Took it to an auto mechanic he said it my left side head rocker arms making the noise. He also said Chrysler 3.6l Pentastar engine are known for this problem.

- Bakersfield , CA, USA

The contact owns a 2016 Jeep Wrangler. The contact stated while starting the vehicle, there was an abnormal sound coming from the vehicle. The contact stated no warning light was illuminated. The contact took the vehicle to the local dealer but there was no failure found however, the dealer performed an oil change. The vehicle continued to experience the failure with the abnormal sound being more pronounced. The contact took the vehicle to an independent mechanic to be diagnosed. The contact was informed that the cylinders needed to be adjusted. The vehicle was not repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 93,000.

- Cherry Valley, MA, USA

As I drive, the car loses the ability to accelerate. It then passively stalls and the automatic steering locks up. All electrical inside the car still stays on. I put the car in park and it restarts on the first key turn. It has happened up to 3 times in a trip, but it is inconsistent when it happens (not necessarily every trip and not at specific speeds (it happeneded going 70 on the highway as well as going 25 in a neighborhood)). When I brought it to the dealership. I was told unless they could make it happen, they couldn't fix it. They also said even if they could make it happen, they couldn't be sure what it was. The onboard computer that sends error codes indicated different things that have been replaced (computer parts, sensors) and nothing has worked.

- Oviedo, FL, USA

Internal manual transmission problem. Cannot put jeep in 3rd gear. Burning smell

- Arlington , VA, USA

75,000 miles, engine ticking on cold start, engine light for cyl 2 misfire, engine chugs and has low acceleration. Dealer replaced rocker arm under owner's extended warranty. Did not fix problem and now are disassembling engine. Read many other customers with same problem, class action law suit in progress. Manufacturer knows about problem but will not tell owners.

- Tucson, AZ, USA

Engine has failed. Had it inspected by two mechanics and they said the same thing, there are broken internal components possibly due to defective components.

- Tucson, AZ, USA

Oil cooler housing cracked and leaking oil over entire engine which could cause a fire. Dealership has confirmed the part is damaged. No warning lamps or messages were triggered. Others have experienced the same problem with multiple replacements. Vehicle has been at the dealership now since 2/1/2023 waiting for Chrysler / Mopar Warranty to give the authorization to repair.

- Brownstown, MI, USA

While driving my Jeep Wrangler on the highway going speeds of >60 mph for longer than 20 minutes the vehicles check engine and traction control light illuminate and I lose passing capability in the Jeep. Once the vehicle is turned off and on 3 times the system seems to reset itself. Because of this the only way the dealership can read the codes is if the lights are illuminated. I have taken the Jeep to 2 different Jeep dealerships while the lights were on and both have claimed that the "system needed to be reset". Once they do that the Jeep seems to run fine and the lights are gone. However, it is still happening whenever my speed goes 60 mph or more for a short period of time. Due to this problem I am not comfortable but sometimes must take my Jeep on the highway and without fail the same warning lights illuminate and the passing power is gone. I have reported this problem to Jeep itself and was told to take it to another Jeep dealership which I did and the same maintenance was performed but yet the same problem exists. This failure is a hazard to not only the driver but those around due to the vehicles lack of passing power when on a highway where speeds are at a minimum of 65mph.

- Erie, PA, USA

The camshaft and lifters failed with no check engine light. Upon inspection the left bank cams and lifters were in need of replacement and a pinhole was found in the radiator.

- Enid, OK, USA

Oil Housing Unit crack. Just bought vehicle used. Weather dropped to 28 degrees and oil housing unit cracked. All oil poured out of vehicle and would not hold any oil when more was added. Took vehicle to Jeep dealer and they confirmed that the PLASTIC piece that was the original part cracked and that this is a very common problem for 2014-2017 Jeeps due to the part being plastic. Part is not covered under any warranty and will cost $1200 to repair. I'm told that the replacement parts have been updated and are no longer made of plastic due to the high instance of problems. All research shows that this was to be a recall but that it has not been made official. This is a huge safety concern as the oil completely drained from the vehicle upon crack. Had I not been in my own driveway and driving down the highway, this would have caused major issues, engine failure and very possibly an accident. We were planned to be on a 6hr road trip moments before this occurred in the driveway. This part needs to be recalled and replaced by the manufacturer since it is a common and known problem with many Jeeps manufactured during that time frame.

- Summerfield, FL, USA

Parked vehicle outside corner of home at 9:00 pm. Awoken by loud popping and hissing sounds at 4:45AM. Looked outside to notice a bright orange hue by vehicle. Realizing the car was on fire, we called 911 and proceeded to use garden hose to water down both the vehicle and the home that the car was next to, in order to try to prevent the house from also catching fire. Vehicle was not moved nor accessed during those 7 overnight hours. It was locked and we were all asleep. There were two other vehicles parked next to and behind the vehicle that caught fire - those two other vehicles sustained no damage to them. The house sustained some minimal siding warping from the heat of the fire. Fire chiefs reviewing the damage in person as well as viewing photos have stated that it appears to be battery or fuse box related as that side of the engine's damage was greatest as well as the battery and fuse box being completely destroyed by the fire. No warning lights or indications of system failures or malfunctions prior to parking the car. Vehicle was towed away from scene by insurance company. Unsure if vehicle is still at that lot or not. Insurance deemed vehicle totaled and issued check for losses.

- South Park, PA, USA

P0302 code popped up all four rocker arms on left cylinder need to be replaced. Jeep had normal oil change 50k miles

- Accokeek, MD, USA

I had an error message for the thermostat last week had that replaced. Now there is a puddle of oil coming from the oil coolant assembly. Replaced the thermostat awaiting mechanic for the oil coolant issue now.

- Saint Cloud, FL, USA

Cold start, engage reverse and the engine idles really low and sometimes stalls. If I move the shifter to neutral the engine revs back up and does not stall. Rolling down the driveway and then engage reverse the problem does not occur. The issue has been getting worse whether its in the dead of winter or summer.

- New Baltimore, MI, USA

The contact owns a 2016 Jeep Wrangler. The contact stated that upon the approach of a stop sign with his foot on the brake pedal, the engine had begun to rev without warning. With the brake pedal depressed to the floorboard, the vehicle continued to lurch forward as the contact clipped the vehicle in front of him. As the engine continued to rev, the contact immediately shut off the ignition. A police report was not filed and no injuries were reported. Both the contact and the other driver were able to drive away from the scene. The dealer was notified and an appointment was made for a diagnostic. The contact called the manufacturer and was informed that he would receive a callback, the contact had yet to hear back from the manufacturer. The vehicle had yet to be repaired. The failure mileage was approximately 71,000.

- Plymouth, MN, USA

The oil cooler housing exploded in my 2016 Jeep Wrangler. I put my car into reverse- I backed up and tried to put the car into drive. The car would not shift out of neutral for several minutes- 2 quarts of oil spilled onto the ground. My car eventually made its way to drive and has been steadily leaking oil since.

- Indianapolis, IN, USA

I have a Jeep Wrangler Unlimited Rubicon 2016 that suddenly lost power in fast moving traffic with intermittent miss fire and blinking check engine light along with smoke and smell of burning oil. Looking into the engine from the top a large, deep pool of oil was sitting in the middle of the engine and working its way on to hot components of engine and exhausts and smoking. This could have easily become fire hazard in high temperature desert environment where running temperatures and hot exhaust pipes could start a fire. The engine miss fire and sudden loss of power was checked to be failing ignition coils and plugs that are supposed to be warrantied to 100K miles. The Pentastar V6 3.6 oil cooler was leaking badly and its effect could have been disasterous for the engine and car safety. The Oil Cooler faulty plastic design on this engine is a well known problem that Chrysler is refusing to address as recall on Wranglers sold. There are hundreds of complaints and cases of failure of this plastic component on the internet and the dealers are all well aware of it and happy to charge $2k for replacement. Chrysler and the dealer refused to admit the faulty oil cooler design and also would not accept ignition coil and spark plug replacement under the Std 80,000 miles California Emission Control warranty that come with all engines sold in CA. Chrysler is hiding this faulty design on Wranglers but accepted it on other Chrysler cars.

- Mission Viejo, CA, USA

2016 JEEP WRANGLER UNLIMITED SPORT. Vehicle has 41,500 miles. 3.6 Liter Pentastar V6. Gushing oil from oil cooler on to the exhaust and smoking to the point of catching fire. Known issue from what I am reading online. I guess Chrysler is waiting for one of us Jeep owners to die in a car fire!! $1200 to replace.....UNACCEPTABLE that a recall has not been forced on Chrysler!!!!

- Delray Beach, FL, USA

Oil filter housing/Oil cooler cracked. Dealership says its a common problem on 2014+ jeeps with 3.6 liter engine yet Jeep hasn't issued a recall. Dealer stated that this seems to happen around 50,000 miles on vehicle. No warning lights came on, noticed smoke coming from under hood when driving from oil falling onto exhaust. When pulled over large amount of oil was coming out from underside of Jeep. This happened with 43k miles on the vehicle which is right around where the dealer said they were seeing a large amount of failures for this part.

- Troy, OH, USA

On thursdsy 5/13/2021 at approximately 5:15-5:20pm, I was dropping my daughter off to work and I got back on the road then through the U-turn to get back on the other side. I proceeded to enter the roadway initially about 10mph and all of a sudden, the Jeep accelerated to almost 80 mph and I smashed the braked and it would not stop at all. The RPM's were steady going up. I pulled up the emergency brake right before I almost rear ended the car in front of me at the light getting ready 6O go through the intersection. I was on the brake at the same time. Once the car finally came to a stop, the engine was still reved up. I put in park and turned the vehicle off with the ignition. I then restarted and was scared the rest of the way home. The vehicle was in motion when this happened. There was nothing under the brake. My floor mats were flush and flat and the acceleration was so scary. I feared for my life. I have not driven it since. I called the dealership and they told me to bring it in the next morning, Friday the 14th at 10 am but that theu would not be able to look at it until 7-10 days. I did not bring it as this was unacceptable. I will call back and speak with someone else for results. The tech even told me that this happened to his brother that also have a Jeep. There isn't a recall for this that I've found. Someone will lose their life because of this malfunction. This is a very serious safety hazard.

- Houston, TX, USA