2021 JEEP WRANGLER Complaints

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 to: 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.

Someone knocked saying the 2021 jeep wrangler 4XE was smoking. The vehicle was filled with smoke. When the back doors were opened, the interior neer the battery was all melted. A couple minutes later the vehicle burst into flames.

Unpredictable complete loss of power steering that will continue until the brakes are applied and speed is reduced to approximately 30 mph and voltage level spikes, as high as 16.3 volts as shown on the instrument panel. It is not temperature related. When disabled it requires two hands and extreme strength to turn, especially when taking an off ramp. Voltage level is typically ranging between 12.7 - 13.7 volts during normal conditions as well as when in no power steering conditions. The first trip 3-4 months ago to the dealership and the only finding was a corroded ground loop which did not solve the issue. After no success begging for a loaner car we left the Jeep 19JUN25 while on vacation for second trip this week. I requested them to contact Stellantis STAR Center and this is the report: 24JUN25 Good morning - our STAR case engineer pointed us in the direction of a similar STAR publication that we had followed the last visit. I did not find any faults within the charging system or any voltage regulators at this point. There were 5 labeled grounds in this publication that were common for building up corrosion. The ground that is on the frame near the driver rear close to the 48v battery had a large amount of corrosion. He cleaned up each ground and applied dielectric grease yesterday, so now I am having him take on a few test drives to see if the issue persists. I have a video of the spike leading to steering reengagement but unable to upload it.

I own a 2021 Jeep Wrangler 4xe Unlimited, which has undergone three manufacturer recalls and two separate service (one handle during a recall visit) visits due to charging failures. The recalls were related to defrost system malfunctions, sudden loss of motor power, and high-voltage battery concerns. Each of these issues was addressed solely through **dealer-installed software updates**—updates that could not be completed over the air. These recalls and service visits highlight a troubling pattern: the vehicle’s core systems—including the BPCM, IDCM, PIM, TCM, and HCP—are deeply interconnected and dependent on one another. So far, my vehicle has required a total of **10 software updates**, with some systems needing multiple revisions. Most recently, Jeep addressed a “not charging” problem by once again performing a software update—this time affecting **five of the seven systems previously updated during recalls**. Despite the problem originating from their software architecture, Jeep charged me **$200 for the update**, even though it stemmed from an issue caused by their failed over-the-air deployment strategy. These recurring failures are not isolated incidents—they represent a systemic flaw within the vehicle’s hybrid management and safety systems. Relying on repeated software patches to resolve critical defects is not only unsustainable—it’s creating **unsafe driving conditions** and placing an unfair burden on the owner.

Coolant leaking, engine overheating, dealer says not covered issue despite it being a known issue (see customer satisfaction notification zd8 coolant leak. But dealership is going to charge me over five hundred dollars to replace a gasket and use some lock tight on my vehicle. I understand there isnt a RECALL on my vin in particular but I also can read and the narrative in the above mentioned notification matches my vehicle. 2021 Jeep Wrangler Unlimited 2.0 turbo engine. So why am I paying out of pocket for a "known" issue?

Coolant, leaking from jeep wrangler overheated, took it to my personal mechanic, who pointed out that there is a known issue and handed me the customer notification ZD8 coolant leakage, which states that the vehicle should be taken to a dealership and that the repair would be covered. I took it to the dealership. I was told that it is not covered and now I'm being charged over $500 for something that is a known issue. I have tried calling mopar.I've tried calling other eight hundred numbers to get someone to explain this to me yet.No one seems to be able to tell me anything.Other than there are no open recalls, which I already know can someone please explain why a known issue is not covered?

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.

Date: [XXX] Subject: Immediate Safety Concern – 2021 Jeep Wrangler Sahara 4xe – Acceleration Failure Dear Jeep Customer Care, I am the owner of a 2021 Jeep Wrangler Sahara 4xe, VIN [XXX] , with approximately 50,000 miles. I am writing to report a critical and potentially fatal safety defect that occurred multiple times on [XXX], most notably at the intersection of [XXX] and [XXX] in Oregon. On multiple occasions, when attempting to accelerate from a full stop into an intersection with cross traffic traveling at 55 mph or more, the vehicle failed to respond to throttle input. Instead of accelerating, the Jeep simply rolled slowly into the intersection despite my foot fully depressing the accelerator pedal. This placed me at immediate risk of being struck broadside by oncoming vehicles at high speed, which could have resulted in catastrophic injury or death. The check engine light was on since [XXX] and my husband drove the Jeep to Lithia Chrysler Dodge of Bend (Oregon) on June 4th, 2025, 12 pm. They ran a computer test and told my husband that there was a recall on the battery but that we could still drive the car, and it was safe but not to charge the car (we followed instructions). We couldn’t even secure a vehicle appointment until July 2nd, 2025. How do you not prioritize a potentially critical situation? This defect is entirely unacceptable and renders the vehicle unsafe for operation. I will not drive the vehicle further due to the danger involved. Given the severity of this defect, I request: •Immediate investigation by Jeep/FCA engineering and technical teams. •Safe transport (towing) of the vehicle to an authorized service center at Jeep’s expense. •Full documentation of the inspection, diagnosis, and resolution of this issue. •Confirmation of whether this issue has been reported in other 4xe vehicles or constitutes part of a larger safety defect investigation. I am documenting this issue formally INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

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.

Took my vehicle in on 10/16/2023 to the Morgan Hill Jeep store where I bought the vehicle indicating that vehicle was unsafe to drive due to shaky front end suspension. Was told that the tech could not verify my complaint but they replaced the steering damper under a recall. Shortly after, vehicle continued to shake over bumps and uneven pavement to the point that on 06/07/2025 on a 2 hour road trip the shakes became so violent that the car is undriveable. Dropped the vehicle off at the nearest location, Stevens Creek Chrysler Jeep. I have a video taken to show the severity of the issue. Now being told that the repair is not covered under warranty even though it was brought to their attention at 22,778 miles within the warranty period, and various multivehicle inspections were performed during the warranty period after this suggesting no issues. There are many known cases and various lawsuits and extension of warranty periods for this issue for model years previous. I believe my vehicle was built during that period.