Engine And Engine Cooling Problems of Jeep Grand Cherokee - part 2

2012 Jeep Grand Cherokee hemi. As traveling whether on highway or on streets no matter the speeds the Jeep tends to just stall out out of no where especially when braking and coming to a stop it completely shuts off, no engine, no steering and then must have to engage into park or neutral to push to start up the Jeep again. It is very dangerous and scary any time it happens and even more so when happens on highway. It has been an on going issue since I bought the vehicle in Nov. 2018 but only happens every once in a while and out of the blue when it does. I did reached out several years ago to the manufacturer mopar Jeep Chrysler but they had no solution for me. I had a case number with them but it was so long ago I cannot remember now. I did have the recall on the fuel pump relay in which I thought that would resolve my issue but unfortunately it did not and I still experience this Jeep stalling out at any point while driving, onto braking, and then to the stop. Any help? thanks.

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I am writing to express my serious concern and request immediate goodwill assistance regarding my 2019 Jeep Grand Cherokee high altitude . This vehicle has suffered a head gasket failure at just over 100,000 miles and has been diagnosed by the dealership as a cost for myself to fix head gasket and recommended a full engine replacement. I have been a loyal Jeep customer since I was 16 years old. I previously owned a 2008 and a 2010 Grand Cherokee and have always supported the brand. In may 2022, after saving up my hard-earned money, I purchased this 2019 Grand Cherokee high altitude for over $55,000. The monthly payments are significant, but I chose this vehicle because I believed in the Jeep name and expected quality, performance, and long-term reliability. Unfortunately, this vehicle has been anything but that. In just over two years, it has become a complete money pit. I’ve already had to replace the water pump at 50,000 miles, the radiator at 80,000 miles, and now—at 102,000 miles—the head gasket has blown. These are major repairs that should not be happening on a vehicle that is so well maintained and primarily driven on the highway. I treat this vehicle like my own child, staying on top of all maintenance—fluids, filters, routine checks, and oil changes every 5,000 miles. I’ve also had to pay out of pocket for three separate rental vehicles in the last 18 months due to these recurring issues. This vehicle has not only been unreliable but has also disrupted my ability to work. I drive for a living, commuting between multiple job sites, and I chose this vehicle for its sharp look and supposed quality. Instead, it has caused me immense stress and financial strain. Adding to my frustration is the fact that I had a 7-year/100,000-mile warranty and was not notified that it was about to expire. Had I been properly informed, I would have explored my options before this latest major failure. It's clear that the 3. 6l engine has a pattern of issu.

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Vehicle loses power and warning lights come on “maintenance on the hybrid system”. A little red wrench appears down the lower left corner. It all goes away after about a minute and a half vehicle only loses power for a brief moment.

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While driving my 2023 grand wagoneer the serv 4wd light and dash spelled out service four wheel drive, it lit up the anti collision light, ecs, tcs, and hold!. The parking brake also engaged automatically while driving at least 4 times. This is a serious safety concern to allow a vehicle to continue driving with the ability to automatically engage the parking brake while driving. The safety of my entire family was put at risk. I currently have the vehicle sitting at the dealership to be diagnosed and reproduced as the vehicle lost all power after this incident. Another serious safety concern is the total loss of power with no notice. This could easily have been while I was driving and caused a serious accident and possible fatalities.

Cam shaft and yes it is available to be looked at. The vehicle was misdiagnosed multiple times and sent back home with the same error code while fixing other items that were not the root cause of the issue. The engine light was on with the misfire code when I brought it in and was repeatedly sent home and within 20 miles the same code returned.

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My 2023 Jeep gc overland 4xe was at the Jeep service center for the same issue in a week. I get a service throttle control warning, cel, then every warning light on the dashboard lit up. It happened on my driveway the other day and I would not drive. I had Jeep roadside tow it to a Jeep service center. On 7/9/2025 I picked up the Jeep. Service tec said no open recalls, no software updates and the throttle body module was reprogrammed. A 14-mile test drive was done and the codes did not return. Shortly after pickup, while driving at 65 mph on the thruway, I got the same error message, service throttle control along with a check engine light and all warning lights again lit up. The Jeep displayed a reduced power warning, and many other warning but I didn’t have time to look at the dashboard. The vehicle slowed to a crawl in limp mode at 23 mph, the steering became very heavy and slow to respond. I was able to quickly move over to the shoulder, and I was almost rear ended by a tracker trailer. I got off the thruway, shut the engine off, then back on and was able to get full power back. I immediately drove it to the dealership service center. This is not safe vehicle to be in and there are many other reports of this happening.

While driving, the vehicle sends a message that the automatic cruise control has shut down, the car starts slowing down and doesn't respond to pressing on the gas. Only recourse is to move off to the side of the road, shut everything down and turn it back on. The batteries show two miles left on the electric system. This is the second occurrence. Both have occurred at highway speed.

Alternator caught fire.

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This vehicle continues to have electrical issues which effects the drivability. For the current service visit, the vehicle was taken in due to “shut down” or “shudder off” as if the car had completely been downshifted and lost power while in full drive mode causing a driving interruption. This driving interruption causes a concern for safety. As of today, the vehicle has been in the service department for 56 days. Red wrench appears each time with "service hybrid system", check engine light. Discussions with service department: "no definitive fix" . . •b273c-00 meaning: (one of the codes) the code specifically points to an issue with the digital crash input, meaning the vehicle's computer is detecting a "crash" event, even when one hasn't occurred. •4xe specific: this code is frequently seen on Jeep 4xe models, likely due to the complexity of the hybrid system and its interaction with the orc.

Driving vehicle and it lost all power. Warning light for service phev came on solid on dash. Switched to esave and was able to drive approx 2 blocks and vehicle lost power again in middle of road. Shifted to neutral, restarted and was able to side of road. Called tow company to deliver to dealer. Side note- vehicle was in dealer on 6/30 with flashing service phev light; dealer ran code and returned with dtc of b273c-00 (digital crash input). Dealer stated that vehicle is going into a “limp mode” due to 95b software update, and that there is not a fix, and other vehicles are at dealership unable to repair. When asked for advice what I should do, the response was “ do not take a long road trip”. I drove approx 60 miles since and the vehicle went into solid limp mode. Being evaluated at dealership currently.

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Motor making a ticking noise, brought to dealership and was told the camshafts are destroyed and there is metal throughout the rest of the engine. 90881 miles on the car.

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While driving the road whether highway our town… my vehicle will stall out. I can’t safely pass because my car loses power. . Check engine light starts blinking then traction control lights come on and then battery light. I have to turn the car off after turning flashers on put it in park and restart after a few seconds. This vehicle is very unsafe to drive.

The contact owns a 2024 Jeep Grand Cherokee. The contact stated while driving 30 mph, the temperature gauge rose to the maximum, the engine revved loudly, and the vehicle suddenly stalled. There was no warning light illuminated. The contact was unable to pull over to the side of the road. The vehicle was able to restart, and the contact continued driving. The vehicle was taken to the dealer, and the dealer attempted to diagnose the vehicle, but the failure could not be duplicated. The contact stated that the failure recurred while driving. The vehicle was taken to autonation Chrysler Jeep west (16300 w colfax Ave, golden, CO 80401); and the contact provided a video of a previous occurrence of the failure to the dealer; however, the dealer could not duplicate the failure. The vehicle was not diagnosed or repaired. The contact was referred the manufacturer for assistance. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 60,000.

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The engine and powertrain are affected by a defect described in safety recall 66a / NHTSA 23v-411 (loss of crankshaft position). Despite the recall software update being performed, my 2014 Jeep Grand Cherokee continues to display diagnostic trouble code p0336 (crankshaft position sensor performance). This issue causes intermittent stalling, hard starts, and loss of engine power, which creates a serious risk of crash if the vehicle stalls while driving. The safety defect described in the recall — tone wheel magnetic material delamination leading to crankshaft signal loss — is still present. Two diagnostic reports (one from an fca-authorized dealership and one from an independent mechanic) confirm the presence of dtc p0336. The service manager at the dealership agreed this is likely recall-related but said fca corporate must authorize hardware repair. Fca (case #93427994) has refused to approve full repair, leaving the safety defect unresolved. The defect has been confirmed by the dealership and independent service center and persists despite the software reprogramming remedy. Warning lights (check engine) are active and the issue is repeatable.

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The car keeps dying while I’m driving and saying “shift to park” and then slamming on the brakes and dying. The card is 4 years old with 44k miles. I had to sit on the side of the road in 93 degree heat in florida while pregnant and waiting on a tow truck. How has someone not died because of this? I’ve seen several posts of people saying the same thing happened to theirs. It’s so unsafe.

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Vehicle stalls and loses all power while driving. Vehicle comes to an abrupt halt.

I was driving my 2018 Jeep Grand Cherokee laredo 4x4 on the highway at approximately 65-70 mph, when suddenly the car started sputtering and my check engine light came on and started blinking. The car was essentially not drivable, so I pulled over at a gas station and had the car towed. This is dangerous as I was going uphill, and could have caused an accident, or worse. I did not have a check engine light prior to this! the next day the car was inspected and diagnosed by independent service center, who said there was a cylinder 4 engine misfire, so they replaced the spark plugs and the coils. Car was fixed, or so I thought, fast forward a couple months later while driving to work, same issue (misfires and sputtering) occurs again and coolant now runs low even though there are no visible signs of coolant leakage. I spoke to the independent service center and they mentioned there might be an issue with the engine such as a head gasket or fuel system. I got the Jeep towed to get checked, it was confirmed that it was an engine issue, especially the head gasket, camshaft, pistons, and lifters, and that I was going to need a new engine and it would cost between $8500 - 13000. My Jeep has approximately 83k miles. The issues I describe here with this engine are all similar to those that have been reported.

As I was driving onto the highway I reached to about 70 mph. The vehicle said “service electric system” on the dashboard and instantly the vehicle lost power and turned off. It then shifted from drive to park without warning as I was still on the highway. I pulled over safely without causing an accident and turned the vehicle completely off.

The vehicle is a Jeep Grand Cherokee 4xe plug-in hybrid SUV. While driving in heavy traffic on a 45 mph road, the vehicle suddenly lost propulsion, with the dash lighting up with a large "service hybrid system" warning. After several seconds of no response, with traffic trying to work its way around my stalled SUV, the vehicle began to move again, albeit very slowly, just enough to limp it to a side street. After another 30 seconds or so, the problem cleared itself and the vehicle returned to a normal state of propulsion. I took the car to the dealer where I left it for more than a week. Apparently this is a known issue, and a code appeared (b273c-00, digital crash input), but they were not able to replicate the issue while they had the vehicle and so they just reset the code. The automaker is also aware of this problem, but doesn't deem it severe enough to issue a warning to customers or provide alternative transportation while a fix is developed. The dealer's advice is to let them know when it happens again. At this point, I don't feel the vehicle is safe to drive, and it will remain parked until a fix is available.

While riding vehicle just shuts off and stops. Message on dash states put vehicle in park to start vehicle. Do that and vehicle starts and runs. First time this happened 6/13/25 went one week no problem then on 6/25/25 happened again took to service station no codes thrown.

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The transmission went out in October 2024 and was replaced in November 2024. Since then, the valve body has been replaced twice and probably needs to be replaced again. The car does not shift into/out of third gear properly or consistently which causes very delayed acceleration. This is a safety hazard when entering the roadway, especially merging onto the highway. Chrysler is aware of the valve body being “bad” yet continues to “replace” with bad parts.

I was traveling on the highway at highway speed during peak commuting times when a notice to service hybrid system was displayed on the gauge cluster. The vehicle then lost all acceleration and shut down. I had to safely navigate to the side of the road with zero ability to accelerate or brake in fear of not being able to get off the roadway safely. I was automatically shifted into park once I reached a speed of around 5 mph.

While driving at freeway speeds, my vehicle suddenly lost power, creating an immediate and serious safety hazard. I was unable to maintain speed, making it extremely difficult to change lanes safely or keep up with traffic. This put me—and others on the road—at significant risk of an accident. During the incident, the check engine light was flashing continuously. The issue was diagnosed as a failure of the engine rocker, requiring major engine repairs at only 87,000 miles. A critical engine component failing at this mileage is concerning and suggests a potential design or manufacturing defect. I’m filing this complaint to ensure others are not placed in similarly dangerous situations.

First, this Grand Cherokee trailhawk 4xe is a disaster! it has broken down 4 times so far. And it has been towed to the dealership 3 times. The safety issues is that is has literally stopped in the middle of the road or highway 3 times so far. It has been to shop 4 times to get fixed with no solution at all. I have talked to others who have or had this vehicle with many of the same issues. They hate the car, including m,e, and cannot wait or have gotten rid of the car. Lemon law is my next step. Cannot believe that you have not done a mandatory recall on all of these 4xe Jeeps/.

Vehicle wouldn’t go into gear June 2025 was towed due to service engine, abs braking error, service hybrid error. Messages were cleared and declared “no fix” wait for stellantis update. 7/2025 vehicle service hybrid went on, vehicle lost acceleration when turning onto road. Brought back to Jeep service indicated “no fix” stellantis/Jeep aware of issue. Customer states serive hybrid light turns on and the vehicle is losing power on and off verified concern, code b273c-00, documentation from Jeep this issue, it is a known issue with no repair available at this time, it is not recommended to park the vehicle inside until a repair can be performed warranty courtesy vehicle inspection section: see attached know your vehicle report for inspection results warranty claim type:.

In February 2025, my Jeep would flash a “service hybrid system” code that would last about 3-5 seconds and disappear. This happened about 4-5 times over the next few months, code would not stay up and vehicle seemed unaffected. On June 10, I was driving with son on a highway about 60 mph when my car completely shut off, no power to engine, no power steering- absolutely nothing. We experienced a very aggressive jerk when this happened and I limped the vehicle off to the shoulder- we live in a remote area and I had no cell service. I was able to restart my car and drove it in “e-save” mode home. The next day, I drove my car again and had my son and daughter in the vehicle and the same exact thing happened. I was driving about 55mph around a corner with a large semi coming at me in the oncoming lane and my vehicle shut off and lost power and power steering. I was terrified that I would veer into that truck and there was not a shoulder readily available. We had to yet again limp the vehicle a few yards around the corner to pull off and I did not have service. So I had to walk to call my husband to pick my children up. The car has been at the dealership since then and told there is a digital crash code showing with no eta on a fix. Stellantis has denied a buyback yet my car has 26,000 miles on it and is under warranty with no eta on fix. Vehicle is unsafe to drive and unfixable for 60 days now.

Vehicle states “service hybrid system” intermittently while driving and being idle. Vehicle shuts off intermittently while driving and being idle.

Hybrid electric system warning light on while driving with my family on the highway, difficulty with the rear seat headrests, fresh engine oil residue on the underbody. On two occasions, the vehicle remained on and was unresponsive, and all the lights on the dashboard came on, displaying lights and warnings for faults in the hybrid system and battery. It didn't respond when I tried to turn it off. As this may put my safety and that of my family at risk.

The contact owns a 2018 Jeep Grand Cherokee. The contact stated that while driving at an undisclosed speed, the check engine warning light started flashing on and off and the vehicle decelerated. The vehicle was taken to the local dealer who examined the engine and informed the contact that there were metal shavings inside the engine. The vehicle was not repaired. The local dealer was not contacted. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 109,000.

The head gaskets are leaking. Cost of parts to replace is $200 and cost of labor is over $4000 quoted from cross motors Jeep.

I was driving my Jeep Grand Cherokee 2023 at night on the 580 freeway in northern California. Was traveling about 65 mph. When the vehicle lost all power. I was barely able to pull off to the right shoulder still was partially in the right most lane. After multiple attempts of restart the vehicle, it did restart after about 10 minutes. I’ve taken the vehicle in to the nearest dealership on a flatbed truck. It has been there since the beginning of June. Jeep is unable to repair the vehicle sighting a software update needed for the hybrid system that they have not released yet. This problem will apply to any 4xe vehicle by Jeep. Vehicle is not safe to operate on public roads. Jeep does not seem interested in accelerating the fix. I’ve been waiting nearly 3 1/2 months.

Last week I was driving 70mph on the highway when suddenly I got the red wrench icon with the message "service hybrid electrical system" on the dashboard. After about 7 seconds I then got a "put foot on brake and press start" message on the screen - while still going 70mph on the highway. At that point the car died. I had no power - the accelerator pedal did nothing. Luckily, I was able to pull over to the shoulder and stop. Then I did what it said and pressed the brake + start button. The car came back to life, but I didn't have the full hybrid system - I only had gas - the car was not using any electrical power as the battery level remained constant and did not drop as I drove. I continued for another 20 minutes where I stopped for lunch. When I returned to the car it started up normally and continued to run normally after that. This is the 3rd of 4th time the red wrench icon with the service hybrid system warning coming up, but on the previous times the message went away after about 5 seconds and the car drove normally. This is the only time that it caused the car to completely die on my while on the highway. Apparently, this has been happening to a * of people after Jeep issued a software update to address the 95b recall last year. Many owners are now afraid to drive their Jeep 4xe for fear of it suddenly dying on the highway at high speeds.

Had 60 miles to empty of gas and slowed down while entering a turn lane. All the electronics flashed a few times, forced the car into park (while moving) and then would not turn on to drive. Music continued to play, car would not turn off or restart, ac stopped working, and was unable to shift into neutral to get out of the road. Was almost hit by multiple cars getting into the turning lane expecting me to drive like everyone in front of me.

I've received a notification that says, “service hybrid electric system,” but there is no fix at my dealership.

The vehicle has been regularly throwing an error saying service hybrid system and having a massive stutter in power while the hybrid motor shuts off and the engine is started to try and take over immediately. The vehicle has been in the shop for this previously, only to be returned to me saying they don’t have a fix for the problem and to continue to drive it. This happened again at highway speed and caused a near immediate loss of 10-15 miles per hour and were it not for evasive driving on my part and the other car, would have caused an accident. This powertrain has major issues that continue to happen.