2023 Jeep Grand Wagoneer engine problems

Filed Sep 16, 2026 · Engine, Seats · PA

My 2023 Jeep Grand Wagoneer, VIN [XXX], has had repeated electrical, battery, power-loss, recall, and passenger-seat safety concerns. The vehicle was serviced for ongoing battery/electrical issues and remained at South Hills Dodge for approximately one month. During that time, I was told no loaner vehicles were available, leaving me without transportation. When the vehicle was returned on XXX, the front passenger seat was no longer operable, although it worked properly before service. I returned the vehicle the same day and was told the part would be ordered. I asked if the vehicle was safe to drive because the passenger seat was making unusual noises and sounded like it could fail further. I was told it was safe to drive. On XXX, the vehicle was towed back to South Hills Dodge because it was losing power. I contacted the parts department to check on the passenger-seat part and was told no order was in the system. I was later told the part was only then being ordered, although I had previously been told it would be ordered after the XXX visit. On XXX, I received a voicemail stating the vehicle was ready for pickup and that the power-loss issue had been addressed. However, the passenger-seat issue was still not repaired, and I was told the vehicle would need to be returned once the part arrived. The vehicle was later returned on or about XXX, with the understanding that the passenger-seat issue had been repaired. Several weeks later, a passenger noticed the seat had not actually been fixed. I returned the vehicle again, but the dealership returned it stating they still did not have the part. Around XXX the dealership was supposed to contact me once the part arrived and provide a loaner. As of XXX, I have not heard back. The vehicle also still has unresolved recalls. I am concerned the vehicle has unresolved electrical, power-loss, recall, and passenger-seat defects that may affect safe INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 24, 2026 · Electrical, Engine · CO

I was at a stoplight, waiting to making a U-turn. The light turned green release the brake and went to hit the gas. The entire vehicle shut off. I lost all power and had to restart the vehicle in the middle of the intersection with vehicles behind me. It took at least 30 seconds and I ended up having to wait a cycle on the light because I couldn’t go at the time. Once I got the car back on, I lost power steering and my check engine light came on. I was able to make it to parking lot. Once I got there, I parked in the parking space the vehicle did the automatic shut off to conserve energy once I parked I press the button to shut that feature off when I did it the vehicle shut off again. I lost power to everything and had to restart the engine. This has happened multiple times as I believe it’s related to the electrical system and the automatic shut off. I’ve also had multiple other issues with the vehicle in the electrical system. The most recent being that pulling out of a parking lot onto the highway my vehicle would not shift gears, and I had to pull over to the side of the road as I could not get out of first gear. It ended up being the electrical components of the transmission. At the time of the incident listed above, I had just picked up the vehicle from having this issue replaced and had it for less than six hours when this other issue happened. We bought this vehicle used with roughly 58,000 on March 17, 2026, I’ve owned it for just over two months and in those two months it’s been in the shop more than we’ve been able to drive it due to a series of electrical incidents that causes the check engine light to go on or the vehicle to shut off.

Filed Dec 15, 2025 · Electrical, Engine · TX

An overheating engine causes the truck to shut down completely, block the power steering engine, and become undrivable. Electrical and harness assembly problems The dealership inspected the truck and attempted to repair it, but the same issues have recurred and are nearly causing an accident while driving on a highway.

Filed Nov 9, 2025 · Electrical, Engine · NC

Vehicle shuts off and puts itself in park at intersections while pulling across traffic. Multiple warning lights. 4x4 faults, power steering faults, auto start/stop faults etc. happened once just after I let off the brakes to start moving and lost power brakes

Filed Oct 16, 2025 · Engine · MA

At engine idle with vehicle parked or driving in heavy traffic, exhaust fumes are entering the passenger compartment. I am not aware of any apparent exhaust leak. The fumes seem to be entering by way of the fresh air intake. I have confirmed CO readings with 2 different detection devices. If the vehicle is moving the readings have been 3-96 ppm. If the vehicle remains stopped with engine running, readings have been +100 ppm. This is a life safety concern. My local dealer had a service appointment over 1 week out 10/22/25. I asked Stellantis to escalate the case and have a reference number. # 94485584 I have lost the use of my vehicle and have not received a closer service appointment.

Filed Aug 6, 2025 · Engine · 17,500 miles · MD

The contact owns a 2023 Jeep Grand Wagoneer. The contact stated that while his wife was driving approximately 65 MPH on the highway, the vehicle lost motive power and shut off. The vehicle was later towed to the local dealer, who diagnosed that the thermostat had failed, causing the engine to overheat. The contact was informed that the valve inside the thermostat had bound, causing improper internal operation of the thermostat. The thermostat was replaced, and the vehicle was repaired. The contact was informed that per TSB: 09-006-25, the same style thermostat was installed to repair the vehicle. The manufacturer was notified of the failure. The failure mileage was 17,500.

Filed Jul 14, 2025 · Driver assistance, Electrical · FL

While driving my 2023 Grand Wagoneer the Serv 4WD light and dash spelled out Service four wheel drive, it lit up the anti collision light, ECS, TCS, and HOLD!. The parking brake also engaged automatically while driving at least 4 times. This is a serious safety concern to allow a vehicle to continue driving with the ability to automatically engage the parking brake while driving. The safety of my entire family was put at risk. I currently have the vehicle sitting at the dealership to be diagnosed and reproduced as the vehicle lost all power after this incident. Another serious safety concern is the total loss of power with no notice. This could easily have been while I was driving and caused a serious accident and possible fatalities.

Filed Feb 24, 2025 · Engine, Fuel system · 33,363 miles · CT

The contact owns a 2023 Jeep Grand Wagoneer. The contact stated that while driving at an undisclosed speed, the vehicle stalled, and the engine overheated with the check engine warning light illuminated. The vehicle was restarted; however, the failure recurred. The vehicle was taken to the dealer where it was diagnosed that the fuel sensor had failed and needed to be replaced. The vehicle was repaired; however, the failure recurred. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power with the check engine warning light illuminated. The vehicle was restarted. The vehicle was taken to the dealer where it was diagnosed that the fuel sensor failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 33,363.

Filed Dec 13, 2024 · Driver assistance, Engine · TX

We the dealership technician had the vehicle for a repair, he was driving it back-and-forth to work like he owned the car and one day He was leaving his home to go to work and the suspension failed so that had to be fixed and that was back on one of the many time it was in the shop. The stop/start engine doesn’t engage for me when I break for me. For me to get it to engage I have to slam on the break as if I was bracing for an accident and then the stop/star engine mode will engage. I think this vehicle has had five clusters replaced in the car, due to the parking sensors, side warning sensors not working. I believe the fifth one went in Dec 2024 once again. The vehicle was in the shop from November 22, 2024 until yesterday DecemberI 2, 2024 when I picked it up. I got home and the parking sensors didn’t beep off and I could’ve crashed it into my garage door and I went through the system and it was already selected to beep but didn’t, then I started getting a message saying that the side warning sensors are unavailable. I put it in reverse it tells me the wipers are off, so maybe all the clusters that they’re making are faulty. The Jeep Retention Customer Service even sent a specialist, technician assistant to the dealership twice or three times to deal with this issue and it’s still not fixed. The dealership Service Center has put in request for answers of how to fix these problems and have had to wait weeks for answers because they don’t know the answers of how to fix the problems with these vehicles and they send a specialist and still the problems still occur they say put in a new cluster a new cluster gets put in the problem still happens. The part is shipped directly from a manufacturer and they have no ETA on that part and my car would still be in the shop, but the Jeep Retention Customer Service Rep had it expedited but the problem is still ongoing. THERE NEEDS TO BE A RECALL ON THIS CAR AND PEOPLE SHOULD GET THEIR MONEY BACK

Filed Oct 1, 2024 · Engine · AL

Vehicle over heated disabling vehicle on freeway. This was a know problem with this manufacturer.