2018 JEEP GRAND CHEROKEE Complaints

system works intermittently--sometimes won't engage--other times suddenly cuts off when engaged

In approximately early to mid-August 2026, I was driving my 2018 Jeep Grand Cherokee at approximately 40 mph when the passenger-side Active Head Restraint (AHR) suddenly deployed without any collision, rear impact, or other event that should have caused it to deploy. There was no passenger in the seat at the time, so fortunately no one was struck or injured. The vehicle had approximately 55,179 miles at the time of the incident. Its current mileage is 55,279 miles. Following the unexpected deployment, the passenger-side head restraint developed a persistent rattling condition. I brought the vehicle to Naples Chrysler Dodge Jeep Ram for inspection. The dealer advised that the head restraint would need to be replaced and provided an estimate of approximately $1,001.95, including parts and labor. I subsequently contacted Jeep Customer Care regarding the problem. My case was assigned Case Number 97938645 and was initially characterized as a high-priority Repair Cost Assistance matter. I was later advised that Goodwill assistance was not available for my 2018 vehicle. I am submitting this complaint because the Active Head Restraint is a safety device, and it spontaneously deployed while the vehicle was traveling approximately 40 mph, without a collision or rear impact. I am concerned that an inadvertent deployment of this safety device could strike and injure an occupant or potentially create a dangerous distraction or loss-of-control situation if it occurs while the vehicle is moving. I understand that certain 2014–2018 Jeep Grand Cherokee vehicles have been subject to FCA warranty-related action concerning Active Head Restraint inadvertent deployment. I am not asserting that my particular VIN qualifies for that coverage; I am reporting the actual safety event and asking NHTSA to consider it in evaluating this potential safety issue.

Subject: 2018 Jeep Grand Cherokee – Sudden Loss of Power, PCM Failure, Electrical Failures, and Concern Regarding Recall-Related Symptoms I am filing this complaint because my 2018 Jeep Grand Cherokee experienced a sudden and unexpected loss of power while I was driving, and I am very concerned about the safety implications and the possible connection to the recall-related electrical problems associated with this vehicle. Before the final failure, my Jeep had been experiencing electrical and starting problems. The alternator failed, the batteries went bad, and I had already paid for multiple diagnostics and repairs. At the time, we did not understand that these problems could potentially be leading to or connected with a PCM failure. I have spent approximately $800 on diagnostics and parts trying to determine and repair the cause of these issues. The most serious incident occurred when I was driving near a school and approaching a stop sign. The Jeep suddenly began losing power and would no longer operate normally. I did not receive an adequate warning that the vehicle was about to completely shut off. The dashboard/screen began flashing, electrical functions began going out, and the vehicle progressively lost power. I was able to slowly move the Jeep toward the right side of the road before it completely shut off. The Jeep then would not start again. This was extremely frightening because the vehicle lost power while I was operating it in an area where there were other vehicles and children nearby. I was concerned about my ability to safely get the vehicle off the roadway and about what could have happened if the Jeep had completely lost power in moving traffic or at a higher speed. The vehicle has since been diagnosed as having a PCM failure. I have already paid for diagnostics rather than simply bringing the vehicle in without any prior information about the problem. Despite this, the Jeep dealershiphas my vehicle now to determine if this is part of recall

I am reporting repeated drivetrain and transmission failures involving my 2018 Jeep Grand Cherokee SRT. The problems began with failure of the driveshaft carrier bearing, which was replaced with a brand-new component by an independent mechanic. The transfer case subsequently required replacement and was replaced with a brand-new unit by a reputable dealership. After these repairs, the original transmission mechanically failed at approximately 99,000 miles. I replaced it with a transmission from a 2021 model that had approximately 45,000 miles. That transmission then failed after only approximately 5,000 miles of use in my vehicle. I am now having another transmission installed, meaning my Jeep is receiving its third transmission. By the completion of these repairs, I will have spent more than $20,000 addressing drivetrain and transmission failures. I am concerned that an underlying drivetrain, transmission, electronic/control, or other vehicle-related condition may be contributing to these repeated failures. Replacing major drivetrain components has not resolved the problem, and I am concerned about the safety and reliability of the vehicle. I am also aware of a similar situation involving my niece’s 2021 Dodge Durango R/T with approximately 60,000 miles. Her vehicle is also on its third transmission, with brand-new replacement transmissions being installed under warranty. I am requesting that NHTSA review these repeated failures and determine whether similar transmission or drivetrain problems have been reported and whether they may indicate a safety-related defect or broader pattern.

I own a 2018 Jeep Grand Cherokee Limited. The driver's-side Active Head Restraint (AHR) suddenly deployed/opened without the vehicle being involved in a collision or rear impact. The head restraint separated/opened with significant force and will not remain in its normal position. I am not aware of any warning lights, warning messages, or other symptoms before the head restraint deployed. This creates a serious safety concern because the Active Head Restraint is positioned directly behind the driver's head and neck. An unexpected deployment while the vehicle is occupied or being driven could cause injury to the driver's head or neck and could also startle or distract the driver. The vehicle has not been involved in an accident that would have caused the Active Head Restraint to deploy. The failed head restraint/component is available for inspection. After researching the failure, I discovered that FCA/Stellantis has previously issued technical service and warranty information concerning inadvertent Active Head Restraint deployment, including TSB 23-018-20 and related AHR warranty-extension programs. I also learned that NHTSA investigated inadvertent Active Head Restraint deployments involving Jeep Grand Cherokee vehicles, including later model-year vehicles. I contacted FCA/Stellantis regarding the failure. I was initially referred to a Jeep dealership, and I am continuing to request that Stellantis review the failure and determine whether it falls under one of its Active Head Restraint warranty-extension programs.

The Jeep was giving me a warning sign. It said stop slowly. Your jeep will shut off so I replaced the two batteries. As my Mechanic told me I replaced the alternator. I also replaced the ground wires. Nothing is making my jeep start. We ran the codes on the jeep and it came back as a U0100 code with the PCM system. No connection error. we looked up the recall information and a recall popped up for this 2018 jeep Grand Cherokee. I am being told that I am not affected by this recall.. the jeep was giving warning Saenz before I replaced the battery and alternator. After that. It did not give warning Saenz Anymore. It’s just completely Shut Off With no warning. Leaving me on the side of the road stranded twice. It will not start and it is reading these codes.

The contact owns a 2018 Jeep Grand Cherokee. The contact stated that since the vehicle was purchased, there was an abnormally strong coolant odor coming from the vehicle. The dealer was notified of the failure and informed the contact that the coolant reservoir was recently refilled, and the odor might be due to an overflow. The contact stated that the failure persisted, and the vehicle was taken to the dealer, where the water pump was replaced. The contact stated that the water pump had been replaced approximately nine times under warranty due to the strong coolant odor and a water pump leak; however, the failure persisted. The vehicle was not yet repaired. The manufacturer was notified of the failure, and a case was filed. The failure mileage was approximately 125,000.

Vehicle Information: 2018 Jeep Grand Cherokee Overland 3.0L V6 EcoDiesel 4x4Component Affected: Fuel/Propulsion System (High-Pressure Fuel Pump) Safety Incident Narrative: The vehicle previously underwent a mandatory manufacturer safety recall replacement for the Bosch CP4 High-Pressure Fuel Pump under FCA Safety Recall Z46 (NHTSA Campaign Number: 22V-406). At 111,948 miles, while operating the vehicle, the engine suffered a sudden, catastrophic mechanical failure accompanied by an immediate and total loss of engine oil pressure. This caused the engine to suddenly stall and lose all propulsion while in motion, creating an immediate and severe highway safety hazard to myself and surrounding traffic.The vehicle was towed to an authorized Jeep dealership under Repair Order #5823328. The manufacturer (Stellantis) and the dealership are currently refusing to authorize diagnostic teardown labor or a mechanical review of the internal safety recall componentry to investigate an acute internal fuel-pump shaft seal leak or residual micro-particle metallic debris from the prior campaign. An internal drive-shaft seal failure on this replacement pump architecture dumps raw diesel fuel directly into the engine's internal oil crankcase, causing severe oil dilution, an immediate collapse of structural oil pressure, and catastrophic engine seizure. The manufacturer is attempting to shift 100% of the financial burden ($25,000 engine replacement cost) onto the consumer, actively obstructing an essential safety failure investigation into a federally recalled component.

The transmission goes into neutral. It has gone into neutral on the highway,local streets, also from a stop. From a stop in drive the electronic D on the instrument panel starts flashing. I turn on the hazards put transmission shifter in Park and start engine. This problem is intermittent, it can be cold or hot, it has happened 4x in 2 years. No accidents thankfully. The engine does not stall, the transmission goes into neutral.

Went for an oil change and learn the cooler has a leak. Car was getting over heated. What cause this issue as I just got it in Feb.2026