Jeep Grand Cherokee L loss of power problems

Filed Nov 7, 2026 · MO

On 11/07/2026 while driving on a highway i-44 my 2024 Jeep Grand Cherokee suddenly lost power and started slowing down without warning. The vehicle stopped moving and refused to accelerate. The dashboard displayed a flashing red “D” and instructed me to shift into park i had to pull over on a busy highway and switch to park and restart my car completely! This is a serious issue! This needs to be looked at and fixed! This is so dangerous …i went to orellys and codes all came back clear!

Filed Oct 25, 2026 · Steering · MI

While driving my 2021 Jeep Grand Cherokee L at approximately 45 mph on [XXX], I unexpectedly lost electronic power steering assistance. The steering became difficult to control, creating a serious safety hazard. I was fortunately able to maneuver off the roadway, but this sudden failure could have resulted in a serious collision, placing myself and other motorists at risk. Multiple dashboard warnings appeared during the incident, including “Service Power Steering,” “Service Electronic Stability Control,” “Auto Park Disabled,” and “Park Brake Temporarily Unavailable.” I had not previously experienced a loss of power steering assistance. The vehicle was inspected by an authorized Jeep dealership, which diagnosed an internal electronic power steering rack failure and recommended replacement at an estimated cost of $4,000. The dealership also identified a parking-related electronic module that was not communicating properly and required additional diagnosis. Both the main and auxiliary batteries were replaced, but the warnings persisted. Within three days, the dealership reported that the newly installed auxiliary battery was nearly discharged, raising additional concerns about possible electrical system malfunctions. I am the original owner, having leased the vehicle new and subsequently purchased it. The failure occurred at approximately 82,000 miles. I am also aware of the federal safety agency Recall 23V‑352 (Jeep Recall 58A), involving the intermediate steering shaft, although its relationship to this failure has not been established. The vehicle has been inspected by the dealership, which submitted a goodwill assistance request to Stellantis. The failed component’s availability for further inspection has not yet been confirmed. I am requesting investigation of this unexpected loss of power steering assistance while driving, given the significant risk of a serious accident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 21, 2026 · Visibility · LA

While driving my 2025 Jeep Grand Cherokee Limited, the panoramic sunroof glass suddenly and unexpectedly shattered/burst while the vehicle was in motion. There was absolutely no rock, road debris, object, collision, or other impact that struck the glass before it failed. The failure occurred without warning. My wife and our two children were inside the vehicle at the time, making this an extremely serious safety concern. The glass appeared to fail suddenly and the panoramic sunroof was left open/damaged. There was no known external cause for the glass failure. The vehicle and damaged sunroof components are available for inspection, and I have photographs documenting the condition immediately after the incident. I am certain there was no impact to the glass. This vehicle has also previously experienced a serious electrical malfunction in which I lost power steering and braking assistance while operating the vehicle. The vehicle was taken to the dealership for this issue and required service. I am reporting this incident because an unexpected failure of the panoramic sunroof while driving presents a significant safety hazard, particularly with my wife and two children in the vehicle. I am concerned about the reliability and safety of this vehicle and believe the sudden glass failure should be investigated by the manufacturer and the federal safety agency.

Filed Sep 9, 2026 · Electrical, Transmission · MI

Hard shifting occurred. Then service 4WD light came on dash. After an oil change, the light went away, but the hard shifting is still there. An independent dealer replaced my transfer case as well as completed an update to the transmission. The hard shifting came back even worse, with almost every gear. Took to a Dodge/Ram/Jeep dealership who completed a TSB 21-015-23. Their next recommendation is to replace the valve body and if that doesn’t fix it, then replace the transmission. They stated this recommendation came directly from Stillentis. Since this is a known issue from Stillantis, they should be issuing a recall immediately. Failure of the transmission can cause sudden power loss, unpredictable acceleration, stalling, and fire hazards. These things can in turn cause accidents and safety hazards.

Filed Aug 13, 2026 · Engine · AL

Vehicle: 2026 Jeep Grand Cherokee L Limited Location: [XXX] Safety Issue Description: When using the remote auto‑start with the key fob, the engine starts briefly and then shuts off. When the vehicle is manually started, the check‑engine light immediately illuminates and begins flashing, and the vehicle jerks violently even while in park. The flashing check‑engine light indicates an active engine misfire, which poses a significant safety risk due to potential engine stalling, sudden loss of power, and potential catalytic‑converter damage. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 5, 2026 · Transmission · TX

I brought my 2021 Jeep Grand Cherokee L to the dealership for its scheduled ~40,000 mile service. During that visit, I specifically reported that something felt off with the transmission/drivetrain. The dealership inspected the vehicle and stated that no issues were found. Approximately one week later, the vehicle experienced a sudden and severe drivetrain failure. While driving approximately 45 mph on a surface street and accelerating to cruising speed, the vehicle began shaking violently. There were loud mechanical noises from underneath the vehicle consistent with components coming apart. At the same time, the vehicle lost all ability to accelerate. Pressing the accelerator produced no forward movement. Due to the loss of power, I was forced to coast out of active traffic and onto a side street where I was able to safely stop. The condition was sustained and the vehicle was not drivable after the incident. When attempting to assist the tow truck driver, I shifted the vehicle to drive and pressed the accelerator. The engine revved but the vehicle did not move. When shifting back to park, the vehicle displayed an error message: “Cannot shift to Park, vehicle moving too quickly,” despite being stationary. This failure created a safety hazard due to loss of acceleration and unpredictable vehicle behavior. This is particularly concerning because a drivetrain issue was reported during a service visit shortly before the failure and was not identified. There were no warning lights or messages prior to the failure. The issue occurred suddenly and without advance indication. The vehicle had recently been serviced and cleared by the dealership despite a reported drivetrain concern. A failure of this nature at speed could significantly increase the risk of a crash, depending on traffic conditions.

Filed Apr 1, 2026 · Brakes, Electrical · NC

Vehicle: 2021 Jeep Grand Cherokee L Issue Type: Electrical System / Loss of Power / Braking System While operating my 2021 Jeep Grand Cherokee L on Interstate 40 at approximately 70 miles per hour, with two minor children in the vehicle, the vehicle suddenly and without any prior warning began to rapidly decelerate, despite continued pressure on the accelerator pedal. At the time the deceleration began, there were no warning lights, alerts, or indications of any malfunction. The vehicle exhibited a significant loss of power, and it felt as though it was being mechanically restricted or “dragging,” severely limiting its ability to maintain highway speed. Only after the vehicle had already begun to decelerate did a brake system warning indicator appear on the dashboard. This sequence of events indicates that the warning system did not provide advance notice of the failure. This sudden and uncommanded deceleration created an immediate and serious safety hazard, particularly given the vehicle’s speed and surrounding interstate traffic. The inability of the vehicle to respond appropriately to acceleration input placed occupants at risk of a rear-end collision or other serious traffic incident. Although the warning indicator later turned off, the vehicle continued to operate abnormally, with ongoing reduced acceleration and diminished responsiveness. This incident occurred without prior warning, and the delayed activation of the brake warning indicator raises serious concerns regarding a potential defect involving the vehicle’s electrical, braking, and/or powertrain control systems, including possible failure of system monitoring or alert mechanisms. Given the circumstances including highway speed, sudden loss of propulsion, delayed warning notification, and the presence of child passengers. I respectfully request that this issue be formally investigated as a safety-related defect.

Filed Apr 1, 2026 · Electrical, Transmission · TX

Vehicle has experienced repeated electrical system failures affecting engine operation, safety systems, and interior electronics from April 2025 through April 2026. Details: April 2025 (under warranty): Vehicle lost power and died. Dealership replaced batteries. December 2025: While driving, multiple warning lights (check engine, blind spot, lane departure, forward collision, accident avoidance) flashed repeatedly. Battery died and was replaced by AAA. Vehicle taken to dealership due to safety concerns; dealership found no issues. March 2026: Same warnings occurred again while driving. Vehicle lost all power while stopped at a red light. Hazard lights did not work. Gear selector knob rotated freely and could not be put in park. After opening the hood, vehicle restarted but windows, powered seats, and infotainment stopped working. Dealership replaced fuse array. April 2026 (~3 weeks later): Vehicle would not start. After accessing battery under passenger seat, vehicle turned on with alarm and lights flashing. Same warning lights reappeared while driving. Interior electronics (windows, seats, infotainment) remained non-functional. Safety Risk: Complete loss of power in traffic, inability to use hazard lights, failure of driver-assistance safety systems, and inability to shift into park create significant risk of crash or injury. Inspection/Repair: Vehicle inspected multiple times by dealership and AAA. Batteries and fuse array replaced. Issue persists and root cause is UNKNOWN. Warning Signs: Repeated warning lights prior to failures, including check engine and multiple safety system alerts.

Filed Mar 13, 2026 · Steering · NY

In July 2025 with only 15,330 miles, I was driving my vehicle leaving a parking lot and I suddenly lost power steering assist in my vehicle. Power Steering light, check engine light, traction control light, and sensor light all illuminated, my odometer began flashing and a message on the screen stating " Service Electronic Stability Control". I safely pulled over and had my car towed to a dealership where they diagnosed an EPS C2 connector was corroded and did not have dielectric grease from the factory. The sensor was cleaned and greased and reinstalled, codes cleared and I thought my vehicle was repaired. In February 2026 with only 19,125 miles, as I was leaving for work, again my vehicle lost power steering assist. Again, Power steering light, traction control light, check engine light, sensor lights, auto stop light all illuminated, my odometer was again flashing and the message on the screen was " Service Electronic Stability Control." The vehicle was again towed into the dealership where they told me that they performed a power steering "flash" and that my check engine light was because of an engine oil pressure issue, they performed an oil change and cleared the computer. This is a serious safety concern that has resulted in towing the vehicle twice, and I received two different diagnosis. I do not feel safe in this vehicle and I do not want to be traveling with my child in this vehicle. I pay far too much money every month, on a brand new vehicle that we leased to be having these serious issues. Loss of power steering is not only a safety concern for myself, but others as well if I were to lose steering assist while driving. The problem has been identified at two different dealerships.

Filed Jan 30, 2026 · Driver assistance · SD

2025 Jeep Grand Cherokee L Limited - Mileage 8,855 - Owned for 6 months!!! - 11/22/2025 System failure with the Forward Collision Warning (FCW) & Active Braking (AB). Available for inspection upon request until vehicle buyback is complete. - At the point of failure the brakes locked up while traveling through a busy intersection bringing the vehicle to a complete stop and resulting in total engine power loss. The jeep was disabled for approximately 10-15 minutes before being able to start and move it clear of traffic. The abrupt braking could have caused a rear-end collision had someone been close behind us which also could have caused numerous vehicles to be involved. We turned off the FCW & AB system through the setting on the vehicle infotainment screen. - 11/26/2025 The dealership where we purchased the vehicle, confirmed numerous transmission codes and found metal shaving in the transmission fluid through a fluid test. Chrysler advised them to perform a "relearn" on the Electronic Control Unit (ECU) and required us to drive it 500 miles to complete the "drive relearn" putting our safety at risk should this not be effective. On 11/27/2025 after turning the FCW & AB system back on, within 2 miles of performing the "drive relearn" the check engine light came back on and noise from the transmission was prominent. The vehicle went into limp mode not allowing acceleration past 10-15mph. On 12/1/2025 The Jeep was taken back to the dealership where they scanned and found code P0729 for gear error in 6th gear. They found the transmission internally failing. For 68 days Chrysler requested numerous testing from the dealership until finally agreeing to the warranty for a new transmission. Work completed 1/29/2026. - The vehicle has only been inspected by the dealerships mechanic who also performed the transmission swap. - There was no warning lamps, messages or other symptoms of the problem prior to the failure.