2021 Jeep Gladiator engine problems

Filed Nov 4, 2025 · Electrical, Engine · FL

The contact owns a 2021 Jeep Gladiator. The contact stated that while driving approximately 35 MPH, the vehicle started losing motive power. The contact stated that there were several unknown warnings illuminated, and the instrument cluster had started flashing on and off. The contact stated that the vehicle slowed down while depressing the accelerator pedal and continued to lose motive power. The contact stated that a warning flashed on the instrument cluster to "Pull Over" and that "Vehicle Was Going to Shutdown". The contact stated that the steering wheel became difficult to turn to the left or the right and that the brake pedal was difficult to depress, requiring the activation of the parking brake to stop the vehicle. The contact had the vehicle towed back to the residence. The contact stated that her husband determined that the 12-Volt battery needed to be replaced. The contact stated that a new battery was installed; however, the vehicle had failed again with the same symptoms. The contact had not taken the vehicle to a local dealer or independent mechanic. The vehicle was not yet diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was unknown.

Filed Oct 6, 2025 · Engine, Transmission · CA

I am writing regarding my 2021 Jeep Gladiator Mojave, which recently suffered engine damage due to a faulty head gasket. I understand the vehicle is approximately 5,000 miles over the 60,000-mile warranty; however, I believe this issue should not be my financial responsibility given the circumstances. At around 60,000 miles, I brought my Jeep in for a full service and inspection to ensure it was in top condition. I was informed at that time that everything looked fine and that there were no issues to address. Since then, I’ve continued to maintain the vehicle properly and drive it with care. The sudden head gasket failure, which ultimately led to engine damage, came as a complete surprise. This situation has been extremely difficult — not only because of the unexpected cost, but also because this Jeep was meant to be my long-term vehicle. My family and I have been loyal Mopar customers for years, and I’ve always trusted in the quality and reliability of your vehicles and service network. Given that I sought professional service and maintenance through authorized channels, and that no issues were identified at the time, I kindly request that Mopar consider a goodwill repair or assistance. I don’t believe it’s fair to be held financially responsible for a mechanical failure that likely existed but went undetected during a recent inspection. I’m grateful that nothing happened to me on the road, as I was unaware of the developing problem under the hood. I truly hope Mopar can stand behind its reputation for integrity, safety, and customer care by helping me through this situation. Thank you for your time, understanding, and continued support. I look forward to hearing from you soon.

Filed Jul 31, 2025 · Engine · 20,000 miles · CA · fire · 1 injury

The contact owns a 2021 Jeep Gladiator. The contact stated that while driving at 60 MPH, there was an alarming amount of white smoke emanating from the engine compartment and permeating the interior of the vehicle, prompting the contact to pull over to the shoulder of the roadway and evacuate the vehicle. Moments later, the entire front of the vehicle was completely engulfed in flames. Local Emergency Services arrived on the scene and were able to extinguish the fire. During the failure several unknown warning lights were illuminated. The vehicle was towed to the residence and deemed a total loss by the Insurance provider. A fire report was filed and preliminary findings on the potential cause of the fire were provided but the contact was unaware of the cause. A Police report was filed, and injuries were reported. The contact's father suffered minor burns to both hands but had not sought medical attention. The manufacturer was notified of the failure, a case was opened, and the vehicle was retrieved for inspection. The manufacturer provided a determination of the inspection, and the vehicle was returned to the contact without providing the contact with the cause of the failure. The failure mileage was approximately 20,000.

Filed Jun 2, 2025 · Electrical, Engine · MI

Hi - So my 2021 Jeep gladiator has 2 batteries. The battery that controls the auto start-stop system failed (while driving). I was at a light on a busy road and the auto stop/start kicked in at a light but because of the failed second battery with no warning, my Jeep died would not start backup and I was unable to even get it into neutral. So I was forced to sit in heavy traffic until the wrecker came. My complaint it why no warning and why did it go into auto stop mode when the battery was in a failed situation.

Filed May 29, 2025 · Engine · 25,000 miles · NY

The contact owns a 2021 Jeep Gladiator. The contact stated that while driving at an undisclosed speed, the vehicle made abnormal sounds. The vehicle was taken to the dealer and was test-driven; however, the dealer refused to diagnose the vehicle while it was covered under warranty. The vehicle was then taken to an independent mechanic, who diagnosed the vehicle and determined that the camshaft had failed, and the engine oil cooler housing needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 25,000.

Filed May 19, 2025 · Engine · CO

Failed Right intake camshaft and roller rocker arm. Failure causes misfires and limp mode to be activated when trying to pass and accelerate and in my case was while going up a hill and unable to complete a safe pass of another truck. Known issue by Jeep and Stellantis as they have redesigned a kit for this specific part and upgraded software to increase pressure to the oiling system, but they have failed to replace parts and are 12000 orders behind on parts at ths current moment truck has been undriveable for greater than 45 days. Flashing check engine light and warning lights in place

Filed May 14, 2025 · Engine, Fuel system · WI

Multiple cylinders miss fire, Camshaft 1 position slow responding. cylinder2, 4, and 6 repeatedly misfire. Passenger side engine is making excessive noise. This is the information given to me by Van Horn jeep mechanic. also confirmed by advanced auto. Advanced auto stated this is the 3rd jeep they have had in their shop recently to replace a faulty Camshaft. My Jeep only has 66024 hwy miles. Vin [XXX] (2021Jeep Gladiator) INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 11, 2024 · Electrical, Engine · TX

My vehicle has about 17,000 miles. Both key fobs are failing to connect with the vehicle. The batteries have been checked by the dealership to determine the fobs are in working order. Without having the fob work, I am unable to unlock my doors or start the engine. Thankfully, learnng my fobs were not connecting occured while in my garage at my home. However, if this occured while away from home, or at night, I would have been stranded with no access to drive the vehicle. My Gladiator will have to be towed to the dealership now to get this resolved.

Filed Apr 12, 2024 · Engine · 98,000 miles · WA

The contact owns a 2021 Jeep Gladiator. The contact stated that while operating the vehicle a valve knocking noise was present coming from the engine compartment, the check engine light had illuminated and the vehicle would not properly accelerate. The contact received codes that indicated an engine misfired in cylinder three and cylinder five. The vehicle was taken to the local dealer. The cause of the failure was not yet determined. The manufacturer was notified of the failures. The failure mileage was 98,000.

Filed Dec 8, 2023 · Engine, Fuel system · CA

The contact owns a 2021 Jeep Gladiator. The contact received notification of the federal safety agency Campaign Number: 22V767000 (Fuel System, Gasoline, Engine) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. Parts distribution disconnect.