Engine And Engine Cooling Problems of Jeep Wrangler - part 1

Jeep 4xe loss of motive power. Was driving and warning came on to service charging system and lost all power while driving on freeway. Had to coast to a safe place to pull over. Screen told me to put vehicle in park. Put it in park, turned engine off, then turned it back on and it drove fine. Posted to Jeep 4xe group as this issue seems fairly common on there and they mentioned that you guys are looking into this issue and called it loss of motive power.

See all problems of the 2023 Jeep Wrangler 🔎.

The engine in my 2014 Jeep Wrangler unlimited (3. 6l pentastar v6) suddenly seized without warning at approx. 154,525 miles. The vehicle stalled while in motion, causing immediate loss of power and creating a dangerous situation where I could have been struck by other traffic. This was a major safety hazard. The Jeep was towed to a dealership, where technicians confirmed the engine is seized and provided a written estimate of about $12,000 for full engine replacement. I later had the vehicle towed back to my home, but the failed engine remains in the vehicle and is available for inspection upon request. The problem has been reproduced and confirmed by the authorized Jeep service center. Jeep/stellantis customer care has also been contacted, and a case has been opened. Decline goodwill assistance. There were no warning lamps, messages, or prior symptoms before the failure. The vehicle was operating normally until the sudden stall. This lack of warning combined with the engine seizure placed my safety and the safety of others at risk. I believe this issue is part of a known defect pattern with the 3. 6l pentastar engine, which has been subject to numerous complaints, service bulletins, and litigation. A well-maintained Jeep engine should not fail catastrophically at this mileage without warning.

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Just purchase unit right from [xxx] , driven very home 100 miles, pick the unit up with 20 miles. Went to get into it then morning unit when you try to first start Jeep creeps for long period of time, for periods over 45 seconds , engine should not take 45 seconds to start. Then you have to turn vehicle off briefly and turn it back on finally starts. . Brand new vehicle less then 500 miles on shouldn't be doing this information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Engine surge while braking. New 2025 Jeep Wrangler rubicon with 450 miles. V-6 engine and 8-speed automatic transmission. No modifications. Autonomous braking. Came to a traffic circle with yield sign. Slowed by braking for vehicle on right to enter traffic circle. The engine suddenly surged, began bucking as I depressed the brake further, and entered the traffic circle, just barely missing the vehicle to the right. One wheel (not sure which) began skidding as if the abs had come one. I pulled over, shut the Jeep down and restarted. Problem did not recur. I tested pushing the brake while using the accelerator and the brake easily held the vehicle in stop. I am certain I did not "accidentally step on both the accelerator and brake at the same time. " an hour later I took the vehicle into the service department of the local Jeep dealer. They did not run a diagnostic but said that there were various possible caused but had not seen it on Jeeps they had serviced. I looked on the various Jeep chatrooms on line and discovered that many people had had the identical problem over the last 5 years. Some say they reported it to NHTSA. This is likely a software or computer issue and is extremely dangerous. It needs to be addressed by the manufacturer it was only by sheer luck I did not hit the right-of-way vehicle thank you for your interest.

I am having my oil cooler housing replaced once again after having replaced only 4 years ago. I am on my 3rd radiatior and 3 thermostat. This Jeep is not driven hard or offroad and has been maintained in excellent condition. This engine is junk and not safe. I have not had warning lights only oil drippings in the driveway yet the oil level doesnt seem to change. If not caught this will cause your engine to lock up.

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The contact owned a 2020 Jeep Wrangler. The contact stated that while her husband was driving at approximately 65 mph, she noticed a burning odor in the vehicle's cabin, and the sway bar warning light illuminated. The husband looked out of the driver's window and observed fire coming from under the vehicle. While attempting to steer to the side of the road, the front of the vehicle became engulfed in flames. The couple managed to exit the vehicle safely. The contact's husband tried to extinguish the fire, but it continued to engulf more. The fire department arrived and extinguished the blaze. A police report was filed, and the vehicle was towed to a lot. The manufacturer was notified of the incident. The failure occurred at 51,000 miles.

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Timing chain and misfire bank 1 and bank 2 crank shaft and crank sensor issues.

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After filing my first concern with the vehicle and attempting to rack my brain with answers to why a 2018 is falling apart at the seams, I can only come up with either fraud, or the vehicle has been modified in major ways and glued together only to fall apart every bump I go over. After some reading I’m questioning 49 cfr part 565 form that was turned in after I purchased the vehicle means that I possibly have a replica, “remanufactured”, or altered vehicle. I’m not sure of the legality of selling a vehicle built from whatever vehicles I have, I do know that parts are not all the same years upon scanning modules I got some strange replacement identifiers that I will send. I also question if it really passed emissions being that my short term fuel trim sensor passed the catalytic converter on both sides stays over 99% consistently, also one of the “inspection” reports was done 2 minutes apart and the paper states that the vehicle passed at 5:08 then failed at 5:10 pm the same day. Not many vehicles tend to try again after passing and 2 minutes apart. I would have never bought a vehicle that not only has random foreign parts but a 2015 vehicle is also showing up under module information. I’ll never have recall information, and it seems that every system in the vehicle meant to warn or save me and my family when driving is compromised completely, yet somehow someone was allowed to pretend that I was buying a 2018 Jeep sahara unlimited with no record on carfax that what I am paying over 50 grand for with tax doesn’t just get bad gas and jump half the road when I hit a bump “because it’s a Jeep”. I should have been made aware that I was buying something scrapped, and that the odometer could be from any of them. I would like to receive a report of the form filed months after I purchased the vehicle and my entire Jeep changed description and was no longer being monitored for safety. The ipc, bcm, tcm, and ecu aren’t properly communicating, and panels are all shifting.

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I was traveling at 80mph on an interstate in the fast lane. There were only two lanes. Road was straight with a slight incline. Temperature was 98 degrees. I had been traveling for 10 hours that day. I hear the same bing chime the Jeep makes when it switches from electric to hybrid mode. I was already in hybrid mode and I experienced a lost of power. My vehicle started to coast which it never does because the regenerative breaks always slow me down. I noticed a message on my display but I could not read it as I used the momentum I had to reach the shoulder of the slow lane and coast to a stop. I put the car in park. The message was gone. A few seconds after putting the vehicle in park, it restarted and behaved normally again. This happened one day after being serviced at the dealer. I have all recalls completed including one that covers this issue. I took the Jeep in to be checked and they were unable to read codes or detect any issues.

See all problems of the 2022 Jeep Wrangler 🔎.

Jeep randomly shuts off while actively driving. I have automatic jl. Screen shows to service clutch. All dash lights come on, no buss bar detected, abs, no traction control, airbags, park sense off, check engine, steering locks up. Engine shuts off while driving. Mph screen goes blank all electrical stops working. Connector behind stock bumper is expised to the elements causing shortage. Putting my life in danger everytime I drive.

The contact owns a 2019 Jeep Wrangler. The contact stated that while driving 70 mph, the vehicle decelerated unintendedly and failed to exceed 40 mph. Additionally, the vehicle lost power steering functionality and became difficult to steer. The contact stated that the vehicle later operated as needed; however, the failure recurred several times while driving. Several unknown warning lights were illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not notified of the failure. The failure mileage was 111,000.

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It started with the engine sounding louder then normal. Then a bad smell in the cab of the vehicle. Later found out it was a exhaust leak that was getting into the vehicle causing headaches and other symptoms of carbon monoxide. Also note the burn marks around the broken bracket that could cause a fire if not mechanically inclined to notice. Not check engine light for this. But when I spoke to the dealership it wasn't new to them. Apparently this has happened to alot of the ecodiesel Jeep and gladiators. A common problem that should be resolved before and life threatening injuries result in loss of consciousness or fire.

See all problems of the 2021 Jeep Wrangler 🔎.

The engine blew while I was driving on the highway without warning. Several repairs since January and have had the car at just 2 years. Maintenance has been kept. Dealership replaced radiator, head gasket repair, etc. Since just February. Car was towed to dealership. 2 holes in engine at the bottom. Dealership claims they don't know why. After researching this particular engine and car, I feel that vehicle has a lot of issues. I don't feel that it is safe. I think a safety recall should be considered.

The engine in my 2020 Jeep Wrangler sahara suddenly failed and was diagnosed by the dealership as a complete internal failure involving the lifters and camshaft. The dealership explained that this type of failure can spread metal fragments throughout the oil system, requiring a full engine replacement. This creates a serious safety hazard, as the engine can shut down unexpectedly while driving, putting both the driver and others at risk. The issue has been confirmed by the dealership’s technician and shop foreman, and the vehicle has been at the dealer for over a month awaiting a replacement engine, which is currently on national backorder. There were no prior warning lights or error messages before the failure. The failure occurred without warning, and the vehicle is not drivable. This problem appears to be affecting multiple Jeep Wrangler owners and may represent a systemic defect that should that should be investigated!.

The contact owns a 2019 Jeep Wrangler. The contact stated while driving 20 mph, the vehicle stalled. The contact stated that the vehicle was restarted. The contact continued to drive, but the power steering became inoperable. The contact stated that the vehicle became extremely hot, and the cells popped and damaged the battery. The contact stated that the check engine, power steering, and battery warning lights were illuminated. The vehicle was towed to the residence. The contact called the local dealer, but the vehicle was not diagnosed or repaired. The manufacturer was contacted, but no additional assistance was provided. The failure mileage was approximately 49,700.

I am writing to formally notify you of a serious issue I am experiencing with my recently purchased 2025 Jeep Wrangler rubicon x , purchased on 17 June 2025 from your dealership. Just two weeks after taking delivery of the vehicle, I encountered a major electrical malfunction that rendered the car unsafe and undrivable. While driving, I received an alarming safety message on the dashboard stating: "for safety reasons, please park the vehicle. It will shut off automatically. " shortly after, multiple critical warnings appeared, including: check engine light illuminated gear indicator began blinking transmission failed to shift properly loss of acceleration control and other electronic functions this sudden failure occurred without any prior warning and has caused significant inconvenience, as well as concern regarding the vehicle’s reliability and safety—especially considering it is a brand-new car with only approximately [insert mileage] miles on it. I am requesting a prompt investigation into this issue and an explanation regarding the cause of the failure. I would also appreciate immediate support in resolving this matter, including warranty service, temporary transportation arrangements, and a clear action plan moving forward. Please confirm receipt of this message and advise on the next steps. I look forward to a swift and responsible resolution to this matter.

From the moment I drove off the lot, I encountered problems. The battery light came on immediately, requiring a replacement within weeks. I returned to the original carmax location for this service. However, this was only the beginning. Over time, I discovered the following: the driver seatbelt was not functioning properly the right rear passenger seatbelt buckle was completely missing the filters were filthy and had not been cleaned or replaced in well over a year, according to a trusted mechanic the engine may now require replacement at just 38,000 miles when I called carmax to report the missing seatbelt buckle, I was incorrectly told that my vehicle was not under warranty. This was untrue — I was well within the warranty period at the time. Despite this, I was ignored, and the safety concern received no follow-up or correction. This points to either a falsified or negligent vehicle inspection at the time of sale. Your "125+ point inspection" failed to catch multiple clear safety hazards and wear issues — or worse, they were deliberately overlooked. What’s most disturbing is that I only discovered the missing seatbelt after my sister drove the vehicle with my 5- and 3-year-old nephews in the backseat. One child had to sit in the middle because the rear right buckle was completely missing. That realization — that I unknowingly placed children at risk in a vehicle that your team labeled "safe" — is devastating. Now I’m being told that the engine may be failing — and it hasn’t even hit 40,000 miles. I was recently asked by the southlake service team to provide oil change records, which I am willing to share. But let’s be clear: an oil change receipt does not explain why a newer engine is failing at this mileage — unless something much deeper is wrong.

Vehicle abruptly lost all power while driving, multiple panel lights, turtle mode. Twice now, first time at an intersection (April 10, 2025), second time on street in front of my house after pulling out of driveway. Loss of power steering, insufficient power to get back up driveway to garage. Towed both times. First time spent 18 days at dealer, "multiple dtc codes", no definitive diagnosis. Back at dealer now for past 11 days, no diagnosis yet. Could easily have been life-threatening situation if occured while driving on freeway or at speed. Apparently known problem with these Jeep hevs.

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On a trip on 7/3/2025 out of state the engine failed due to a blown head gasket , which is the third engine related problem I have experienced . Other issues include: broken exhaust valve spring, cracked oil filter housing. With being the original owner and having only 84,000 miles I feel this has to be an issue Jeep is having with my engine 3. 6 liter v6. I am lodging a formal complaint to hopefully, have help with the $11,000 quoted price to replace my engine. Thank you.

After purchasing seems the VIN was updated with information I was not disclosed. The bcm has never worked correctly the instrument panel is erratic and even with a code reader showing p codes there’s no check light. The steering makes the entire vehicle jump over half a road. Blind spot monitors don’t know what to do sometimes they are unavailable, odometer has all 9s sometimes. I did all the checks on the vehicle at the time and what I was given showed I had a 2018 4 door sahara and that was what I was led to believe. After having issues and getting my registration I started looking at everything more because the dealer registered me as a commercial passenger truck(still don’t know why) but found a report that says moab/sahara and my seems my vehicles body chasis and motor are all over the place. I’m pretty sure the engine is failing as at one point in one of the reports I found it stated it failed emissions. But the overall worst is that the suspension looks like it came off the titanic compared to the body panels, there’s a lot of welding and rusted or “appearingly tampered” pieces in the chassis and the vehicle seems to be coming apart at every seam. I am currently not driving it because it looks to have sank down to where it could be dangerous I’m pretty sure the suspension, frame, and axles aren’t rated for what’s on it and sounded like something may be coming off at the wheel or axle area last time I did drive it. The vehicle I thought I was purchasing had safety guidelines and there is 2. 0 parts, 3. 6 parts on this along with random other countries parts. It was bought used “as-is” but not under the pretense that they assembled it by hand from leftovers. It wouldn’t pass safety standards or emissions in a foreign country much less in the united states. I am starting here but will be seeking legal counsel. No longer certain I even have a Jeep frame or chassis or just some panels stuck to a rusting timebomb. I’ve only drove like 8,000 miles. Now I’m scared to.

I was driving down the road in my 2008 Wrangler and all of the sudden every light flashed on my dash board then it felt like I could not shift gears then smoke came pouring out of my air vents. I pulled over and got out realizing it was on fire. Climbed in to save my dog just before the fire got huge. My entire Jeep is gone.

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The contact owns a 2024 Jeep Wrangler. The contact stated that while the vehicle was parked, the contact noticed oil leaking from the engine compartment. The vehicle was taken to the dealer but was not diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 120.

While operating the 2021 Jeep Wrangler under normal driving conditions, I experienced repeated overheating issues. A high-pitched noise was consistently heard coming from under the hood during operation. Simultaneously, the engine temperature gauge would spike to high, and the infotainment system displayed an engine overheating warning. When the vehicle is started from a cold start - the high pitch is constant. To prevent damage or risk of fire, I immediately pulled the vehicle over and allowed the engine to cool. Upon restarting, the overheating issue persisted, with the temperature gauge rising and falling erratically—up to four times during a 15-minute drive. I brought the vehicle to an authorized Jeep dealership service center for inspection. The following findings were documented: coolant system: high-temperature coolant reservoir found completely empty. Low-temperature reservoir found low on coolant. Evidence of coolant leakage at multiple coolant line fittings. Engine block: external head gasket leak observed. Pressure test confirmed leaks in coolant lines. Internal engine inspection: spark plugs were removed and coolant residue was found in the combustion chambers. Cylinder walls showed damage consistent with overheating. Slightly burned valves noted during inspection. Based on the findings above, the engine has suffered critical failure due to overheating and internal coolant leakage. The combination of external gasket leaks, coolant residue in the cylinders, damaged cylinder walls, and burned valves presents a serious mechanical and safety concern. Full engine replacement is required. Estimated cost: $16,000. 00 this engine failure may pose a significant safety risk due sudden loss of power while driving, potential engine fire from overheating, exposure to steam or hot coolant under hood risk of engine seizing while on motion.

Vehicle: 2018 Jeep Wrangler sport unlimited VIN: 1c4hjxdg6jw232312 mileage at failure: 40,631 miles issue date: 6/23/25 component: engine / cooling system / head gasket my 2018 Jeep Wrangler began experiencing overheating issues at approximately 40,000 miles. The engine cooling fan was frequently running on high, and I noticed an increase in coolant loss. The vehicle was taken to an authorized dealership, where a hydrocarbon test was performed and failed — confirming a likely head gasket failure on the driver-side cylinder head. The technician suspected a defect in the cooling system. I was quoted $4,500 just for engine disassembly, before any repairs. The vehicle is now undrivable and is being sent to another independent shop for a second opinion, costing an additional $250. My Wrangler has been properly maintained, and there is no evidence of abuse or neglect. I have attached a dealership invoice and diagnostic notes. This kind of failure should not occur on a well-maintained vehicle with only 40,000 miles. After researching the issue, I discovered that other Jeep owners have reported similar overheating and head gasket failures, particularly in models equipped with the 3. 6l pentastar engine. Technical service bulletin (TSB) 18-078-18 rev a describes cooling system concerns that may contribute to this type of failure. I believe this may indicate a broader defect in the engine or cooling system. Stellantis has not responded to my repeated requests for assistance. I am filing this report to document the issue and request a formal investigation, as this may be part of a wider pattern of early engine failure affecting this vehicle model.

The check engine light came on in my car. I was waiting for the dealer to call me to fix it for the 3rd time. I was on my way home when every electrical option on the vehicle turned on- wipers, lights, dash lights, brake- which caused the car to brake- then it turned off and I had no brakes, the car had no steering, it accelerated and I went off the road.

June 5, 2025 stopped at red light turned green tried to turn left and the Jeep flashed the electric red bolt symbol and check engine light came on lost all power would not go when gas pedal was pushed. A/c lost power started blowing hot air and engine turned off. Restarted engine finally got it to go enough to pull out of traffic. Turned off engine opened hood checked battery cables, fuses and all was intact. Started engine drove slowly to the autozone store to have the diagnostic test done and it showed p2101 power train system throttle actuator a control motor circuit range /performance detected unexpected voltage on the throttle actuator control motor circuit also c121c-00 abs torque request signal denied anti-lock brake system u0401-00 implausible data received from ecm/pcm “a”. System was reset to be able to drive home. 6/16/25 went to start Jeep to go to work made a clicking noise check engine light on and the voltage warning sensor flashing and showed service electronic stability control error would not stay running checked battery cables fuses and restarted engine tried to back out of driveway engine would not go. Had Jeep towed to moore cdjr dealership where it was purchased from 9/2023 to have serviced found throttle body needs replaced dealership contacted several parts dealers, mopar, and other dealerships etc. To locate the part needed was advised couldn’t find the parts needed for the repair. Contacted service department and they advised they were calling national auto care my extended warranty for approval for repair. My concern is if I had been driving 65 mph and it went out I would have been in a accident when the vehicle stopped functioning. Safety of myself and other drivers would have been compromised. This is the 2. 0l turbo motor and have been advised that there are several issues with this motor and should trade in vehicle. I don’t have that option and this is the only vehicle I have.

My Jeep started leaving me stranded 8 times. The Jeep would not start but had warning lights of " service charging system" , with picture of a battery in left of dash, a wrench, engine light, and it won't go into neutral to have it towed. I had it in the shop twice, and they cannot figure out the cause. They did update the computer to cover the recall from automatic combustion. { updated the computer) . It got worse, the car is now cutting off while on. I had it towed to the Jeep dealer aging tonight . The dashboard lights do not come onto until after engine failure. This is a hybrid, I was told by crossroads to keep the vehicle charged but this has not corrected the problem.

The vehicle experienced multiple serious fuel system failures, including a failed fuel injector and high-pressure fuel pump. After these components were replaced, it was confirmed that fuel was still entering the engine crankcase. At no point did the vehicle trigger a “check engine” light, oil dilution warning, low oil pressure alert, or any hybrid/electric powertrain. This represents a critical safety & reliability issue. Fuel dilution of engine oil can: severely degrade lubrication, increase crankcase pressure, and/or lead to internal engine failure or fire the lack of any warning or diagnostic code suggests either: a software calibration issue in the ecm/bcm that failed to detect the problem, a sensor failure, and/or a defect in the onboard diagnostic system itself. This could indicate a broader defect affecting the safety of the 4xe platform and request investigation. This failure delayed necessary service and put both vehicle and occupants at risk.

Like everyone elses Jeep while driving, all the warning signals, bells, whistles start going off. Lose power steering, lose power, put Jeep in park, cannot get it to go back in drive. Soemtimes will not start just look it up on tictok.

See attached document for complaint.

The contact owned a 2021 Jeep Wrangler. The contact stated that while driving at an undisclosed speed, the vehicle lost automotive power. No warning lights were illuminated. The vehicle was started, however, the vehicle failed to start as intended. The contact drifted the vehicle to the shoulder of the road. The contact stated the rear of the vehicle was filled with smoke. The contact exited the vehicle. The contact stated that within five minutes, the fire was coming from the hood compartment. The vehicle was towed to the local tow yard. The vehicle was condemned as a total loss. The contact referenced an unknown recall repair, which had a similar failure description, however, the contact's VIN was not associated with the unknown recall repair. The manufacturer was not made aware of the failure. The failure mileage was 28,000.

I experienced an extreme coolant leak caused by the coolant inlet tube fasteners backing out and becoming loose. This is consistent with mopar recall csn zd8 for 2021-2022 Jeep Wrangler. My VIN does not seem to be covered by this recall but experienced the same issue. I request that the vins be extended to include my VIN. [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Had to take my 2020 Wrangler in to have accessory battery replaced as it had drained my newly purchased battery and my car wouldn’t start. Repair shop replaced both batteries and about a week later the check engine light came on for about 2 minutes then went off so I chalked it up to the battery replacement. It didn’t come back on again until about 3 weeks later when I started feeling a slip when going in to second gear. When I got home after having that issue I noticed a small collection of what looked to me like transmission fluid on my garage floor so I had the car towed to the repair shop again. They informed me that engine oil was mixing with coolant due to a bad oil cooler. Between that diagnosis and my car completely breaking down and cracking my engine block the car was driven a total of 14 miles at the most. There was never any other signs prior to me taking it to the shop that the oil cooler had gone bad and even when they replaced the batteries no codes came up for the bad oil cooler and nobody noticed anything while working in the area. . Since then I have learned that this has been an ongoing issue with the Wrangler since at least 2012 models and there has been several class action suits that were settled out of court I’m assuming so they don’t have to spend the money recalling and repairing every affected vehicle and finding a fix for future models. Meanwhile I have only had my car for 2 years as of last week and now am being charged $15000 $8000 of which I have to pay up front to even find out how long the parts needed will be on back order. Could be a week could be a year. Not to mention that I have no car to drive and a car payment to make while I wait. This needs to be fixed as these cars are overheating out of nowhere and shutting down when it does. It’s a safety issue as well as a consumer issue.

Since we have had the high pressure fuel pump recall completed/replaced, there have been ongoing problems with the cooling system that cause overheating multiple times, on the same grade of road, during subsequent trips. The vehicle alerts and says it has overheated, and is stopped and allowed to cool off. Coolant is indeed low, but there are not any visible leaks and there is no puddling or areas where it appears to be leaking. We have had this issued looked at twice, several repairs completed, hoses replaced, reservoir replaced, and we are still having this issue. This appears to be something exclusive to the diesel motor, as we have friends with the same vehicle with gasoline engine that are not having this concern.

While driving on a highway at the 55 mph speed limit, the vehicle suddenly lost power and I was only able to travel at around 40 mph. The incident happened at a busy time on this two-lane highway and it caused traffic to back up behind me and for people to pass me until I could turn at the next intersection. I was only a mile or so away from my residence and I was able to make it home under the reduced power. The 4xe battery was at <1% and I was driving in hybrid mode at the time of the incident. I recharged the battery overnight and have driven it only a few miles since, with no further incidents. I purchased the vehicle used 2 weeks ago with under 17k miles on the odometer. I have not reported the incident to the dealership from which I purchased the vehicle, as they are not a Jeep dealership and I doubt that they would have a clue as to the cause of the problem.