2021 Jeep Grand Cherokee

This submission is an update to NHTSA Complaint #11727024. The vehicle continues to experience recurring engine overheating and misfire conditions. These issues have been previously diagnosed and are consistent with known manufacturer Technical Service Bulletins (TSBs) related to this engine. Despite this: The dealership has not performed the appropriate diagnostic protocol (including STAR testing) The manufacturer, Stellantis, closed my case without resolving the issue No repair or corrective action has been completed The vehicle remains in operation due to lack of manufacturer support. This condition presents a potential safety risk, including: Loss of power while driving Risk of engine failure or shutdown Increased risk during normal roadway operation The vehicle is regularly operated by my 17-year-old daughter, which increases concern regarding driver safety and reliability of the vehicle under these conditions. This situation reflects: A known defect documented by the manufacturer Failure of the dealer network to properly diagnose/repair Closure of a manufacturer case without resolution of a safety-related issue I am requesting that this complaint be reviewed as part of any broader pattern of similar failures and considered for further investigation.

My son’s car drifted to the right past the white line and he ended up hitting a hydrant and continued at least 100 ft before stopping. Our dash cam showed a slow smooth drift to the right without any lane assist being activated to pull the car back. All safety features were activated and turned on the day we bought the car for him. It was the main reason we chose this model. He is very lucky to be alive. After the impact, the car just barely missed a business sign, a telephone pole and a tree. The car was declared totaled. Unfortunately, the total amount the insurance is offering is about 4k short of what we still owe. Words cannot express how lucky we are that our son is okay, but we are very angry that the features we bought the car for, failed him.

I was driving my car and the car shut off at 30 mph. It completely stopped and the steering wheel locked up. Started flashing start/stop and told me to put it in park. Glad no one got hurt and hope it doesn’t do it again.

The contact owns a 2021 Jeep Grand Cherokee. The contact stated that while the vehicle was parked with the headlight switch set to the Automatic Off/On position, the headlights blinked continuously, the bulb became red, and then the headlights became inoperable. While the headlight switch was in the on position, the headlights operated as designed. There was no warning light illuminated. The vehicle was not taken to a dealer but was not repaired. The manufacturer was not notified of the failure. The contact associated the failure with NHTSA Campaign Number: 21V950000 (Exterior Lighting); however, the VIN was not included. The failure mileage was 70,000.

Fuel pump loosing prime it cracks either in housing or hose internal to the tank and it causes it to loose prime. Long Crank Times/No Start And stall and rough idling at stoplights and upon acceleration. Issue was confirmed and reproduced by independent service center.

Steering is erratic while driving. Car is shifting left and right by itself while driving down the road feeling like the tires want to go different directions from one another. Steering wheel makes noticeable movement on its own left and right while going down a straight smooth road.

BE ASVISED, THIS REPORT MAY BE INTERCEPTED, DELETED, HIDDEN, OR MODIFIED UPON RECEIVING. NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION Vehicle Safety Complaint Complainant: [XXX] [XXX] [XXX] Vehicle: 2021 Jeep Grand Cherokee ------------------------------------- SAFETY DEFECT COMPLAINT – POST-REPAIR VEHICLE CONDITION I am reporting a serious safety concern involving my vehicle following collision repairs performed by Gerber Collision & Glass under a claim handled by State Farm Insurance. After the repair, the vehicle began exhibiting multiple safety-related issues, including: - Steering instability and shaking - Engine performance issues and abnormal noise - HVAC malfunction - Persistent chemical and/or coolant odors - Physical symptoms while driving, including dizziness, lightheadedness, and shortness of breath I returned to the repair facility with photographic evidence showing parts with visible wear and damage that appear inconsistent with proper replacement. Despite this, no diagnostic evaluation was performed, and no corrective action was taken. The repair facility has refused to address the condition of these parts, and the insurer has refused to authorize further inspection. Additionally, there are discrepancies between the insurance estimate and the final repair invoice, raising concerns about whether the documented work matches what was actually performed, including work involving structural components such as the cradle/subframe. I believe this vehicle may be unsafe to operate and that the repair may have introduced or failed to correct conditions that pose a risk to driver safety. I request that this matter be reviewed as a potential safety defect related to post-collision repair. Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Driver's seat belt retractor doesn't retract all of the time. Hangs up & leaves slack. Bought car & wasn't as bad. Didn't talk to dealer until now. Drove car 800 miles & 4 months since purchase. Dealer service dept says no extended warranty etc. I'm past the original warranty period & the 3 month certified used car warranty. Car was sold on Oct 14, 2025. The equipment checklist form marked that all safety systems were working. I feel a slack belt, getting worse is a safety issue the manufacturer should fix in a 5 year old car. Date is now when it's gotten really slow. It was somewhat that way at purchase. Needed to be shook to retract. Al

I was driving on the highway. There were no other vehicles nearby. I heard a loud pop/bang. I thought a tire burst but then discovered the back windshield had shattered

Car has 28k miles. It is driven by a [XX] year old. It is a Jeep GC Summit which is top of the line for Jeep. Both headlights were blown and the dash warning system never alerted that the lights were out. Car is equipped with the headlight monitoring system. She never drives at night so I cannot give you an exact date but we think it has been out since 2024 which is the last Texas inspection it had and passed. Contacted Jeep Wave with concern and was blown off and sent to a VM which was never returned. You have a recall for the Laredo and Overland models but not the Summit. The DRL lights thankfully are bright but you still need headlights. Car has been set to auto for headlights due to her age. I am hoping you give this a serious look. I posted on Facebook and other people are having the same issues with the Summits. You have no headlights and nothing saying they are out. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

This vehicle has ongoing issues with electrical systems. Any time temperature drops into negative digits the vehicle will drain both batteries to the point the auto is inoperable. Further jump starting the vehicle in a very low battery state is a futile venture. The issue leaves the vehicle and it's occupants stranded in sub-zero conditions.

The contact owned a 2021 Jeep Grand Cherokee. The contact stated that while making a left-hand turn, the wheels on the vehicle failed to follow the trajectory of the movement and failed to function as intended, and moved toward the curb. The vehicle came to a stop when it hit the curb. It was unknown if any warning lights were illuminated. The driver-side and passenger-side air bags did not deploy. The contact exited the vehicle, and upon inspecting the vehicle, the contact noticed that the front right and rear passenger-side tires were facing inwards. The vehicle was towed to a collision center. The contact was not injured. No police report was filed. The insurance company was notified and deemed the vehicle a total loss. The failure mileage was approximately 127,000.

REPEATED CAM SHAFT FAILURE. THE VEHICLE HAD A SUDDEN LOSS OF POWER. THIS HAS HAPPENBED THREE TIMES IN THE LAST 12 MONTHS. IT IS CURRENTLY AT A STELLANTIS DEALERSHIP IN MICHIGAN. THERE IS USUALLY N O PRIOR WARNING. THE CHECK ENGINE LIGHT COMES ON AS SOON AS THE ISSUE STARTS.

The screen for mapping other controls is delaminating, creating a safety and distraction hazard

I own a 2021 Jeep Grand Cherokee Trailhawk which we purchased new. On Dec 30, 2025 we were driving home and received a service suspension message on the dash. We took it to our mechanic immediately and they diagnosed it and replaced the left front ride sensor. $380.88 In Jan 21,2026 the ride height message was back. They removed and replaced the air pump assembly with a new united. To remove & replace-suspension-rear suspension-ride control compressor, R&R $2,026.31. Feb 26, 2026 Took back to Lithia Dealership . Stability Control light was on and Traction control light are on check on advise. Changed out Module Transfer Case $1,013.33. Upon further research found out other Jeep owners had the same problem with the air suspension system. I feel this should be looked into.

I am reporting a potential safety-related defect involving my Chrysler vehicle equipped with a V6 Pentastar engine. During a routine oil change a few weeks ago, I was informed by the service provider that my engine oil level was extremely low, despite the oil change being performed earlier than the recommended interval. This was alarming, as the vehicle had not shown any warning lights or obvious leaks. The service provider advised me that Chrysler vehicles with the V6 Pentastar engine have a known issue related to a defective engine seal that can cause excessive oil consumption. I was told that Chrysler is aware of this issue, that it has been the subject of class action lawsuits, but that it has not been formally recalled. I have since submitted my information to a class action settlement related to this issue but have not received any response. Due to the risk of engine damage, sudden failure, or safety hazards while driving, I believe this issue should be formally reviewed and documented by NHTSA. I am submitting this report to help document a potentially widespread defect that may affect vehicle safety and to ensure appropriate action is taken to protect consumers.

I was driving north on I64, and a car in front of me suddenly stopped. Cruise control was on, but when i applied the brake, my car did not stopped, and cruise control speed up, before decreasing speed. Instead of turning off, and allowing the car to slow down. I had to swerve, causing to go off on the side of the highway, and held my foot on the brake for almost a mile, along the side of the highway, before the car came to a stop

Constant problems with starter engaging and not starting vehicle. This form only gave me one option for date; This has happened multiple times. This is a defective part, I went to Dick Scott dealership, tech wrote to check car and did not note defective starter; Wanted me to pay $118 to inspect the jeep. In the warranty jargon, it stated if it was a defective part, it would be replaced. I only have 32000 miles on the vehicle.

My jeep started on fire in my garage. I put my items for the day in my jeep then started it the garage door was open. I started it at 0557. I went and got my son dressed brought him to the living room I heard noises from outside in the garage. I opened the door in the house to the garage, and it was full of smoke. There were flames coming from the front of the jeep. I called 911 at 0603. What component or system failed or malfunctioned, and is it available for inspection upon request? UNKOWEN How was your safety or the safety of others put at risk? The jeep engulfed in flame very quickly. If it wasn't for the quick thinking of my fiancé our home would have been a total loss as well. Has the problem been reproduced or confirmed by a dealer or independent service center? No, I have a complaint going with the BBB Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Police yes my jeep was bunted to the frame. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No, I have had no issues with my jeep.

Transmission failure at 19,481 miles in my 2021Jeep Grand Cherokee Limited 4x4 V6. The vehicle has not been abused, and the mileage is low for its age. The symptoms—erratic shifting, limp mode, and “Service Transmission” warnings— are consistent with a known defect pattern affecting multiple FCA vehicles using the same transmission.