2023 Jeep Grand Wagoneer Engine Problems

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.

NHTSA ID

11739837

Incident

May 21, 2026

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.

NHTSA ID

11705072

Incident

Nov 4, 2025

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

NHTSA ID

11698447

Incident

Nov 9, 2025

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.

NHTSA ID

11693938

Incident

Oct 14, 2025

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.

NHTSA ID

11678825

Incident

Aug 4, 2025

Mileage

17,500 mi

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.

NHTSA ID

11673436

Incident

Jul 12, 2025

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.

NHTSA ID

11644627

Incident

Feb 24, 2025

Mileage

33,363 mi

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

NHTSA ID

11630529

Incident

Dec 12, 2024

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

NHTSA ID

11617625

Incident

Sep 17, 2024

2023 Grand wagonner : Vehicle overheats while driving and completely stops in the middle of the road with no time to pull over safely. This is the second time it has happened in a year of owning it. Check engine light has been on since the first time it overheated and dealers say they don't know why.

NHTSA ID

11615314

Incident

Dec 26, 2023

Engine shut down on highway while doing 55 mph. Almost was in a crash with multilabel cars. Second issue Forward Collision Warning failed on a sunny morning. A semi rolled and dumped it load causing the cars in front of me to stop suddenly. The Forward collision did nothing and did not apply my brakes. I missed the car in front of mine by a couple feet.

NHTSA ID

11614436

Incident

Dec 11, 2023

We took the car home on 5/4/24 & while drive it home we started to get a binging noise, I got scared I thought the car was braking down & a message came on the instrument panel Driver 1 info & then it went away & then a few minutes later more binging this message was check 2nd row seat belt latch, stop driving also the screen,radio,and air conditioner, shut off then it come back on after a while.We had a lot going on & we had to wait for a passenger side mirror to come in because of prior damage being done to it & scratch marks that need to be buffed & everything could be done at one time.Still driving the car and picked up my parents at the airport 5/15/24 and same electrical issue coming across the instrument panel.On 5/22/24 took my parents to the airport and they were in the 2nd row seats & the 2nd row latch message came up three different time while I was driving @ 70 mph and couldn't do anything didn't have a screen,radio,air conditioner or anything.On 6/4/24 the engine light came on while driving & stayed on.Took it in on 6/5/24 & they couldn't duplicate any of the problems and they must of just reset the engine light because we pick up the car on 6/6/24 & when I driving home both the 2nd row seat belt issue come on, & Driver 1 Info I was doing 41mph when it shows up on the instrument panel & the check engine light came on the next day 6/7/24 we took it to another Dealership & they were able to duplicate all the problems. From all the service records that I can see there has been electrical system problems sense10/2/23, 2/19/24, 2/26/24 also wiring repaired done & all these issues where reported by two different Dealership before being purchased by us and the problems still keep happening 5/4/24,5/6/24,5/7/24,5/8/24,5/9/24,5/10/24,5/15/24,5/18/24,5/22/24, 6/4/24,6/5/24,6/6/24, & the seat belt problem sense 2/15/24 & continue until this day. This another Dealership has duplicate all of the problems, but they have no solution for these issues.

NHTSA ID

11594318

Incident

May 4, 2024

New vehicle with under 4,000 miles was being driven on a busy parkway when the engine suddenly stalled and would not restart. No visible warning lights prior to stall. Incident occurred just past the top of a hill, creating the potential for a rear-end collision. A police officer was called and arrived, parking behind the stalled vehicle with emergency lights flashing in order to prevent a collision. The driver of the vehicle tried repeatedly, 5 or 6 times to use the vehicle's built-in roadside assistance to get help but got disconnected every time before a tow truck could be dispatched. Vehicle was in the middle of the highway for over 20 minutes. Dealer confirmed engine has seized and has to be replaced.

NHTSA ID

11571594

Incident

Feb 8, 2024

The contact owns a 2023 Jeep Grand Wagoneer. The contact stated while driving 75 MPH on a road trip, the vehicle made an abnormal beeping sound, failed to accelerate while depressing the accelerator pedal, and lost motive power. The messages "Power Steering Service Required" and "Electronic Stability Control Service Required" were displayed. Additionally, the check engine warning light was illuminated. The contact was able to veer to the side of the road. The vehicle failed to restart after several attempts. The vehicle was towed to the dealer, where it was it diagnosed that the pistons had failed, and the engine needed to be replaced. Additionally, the dealer diagnosed the vehicle and determined that coolant was leaking and had mixed with the engine oil. The vehicle was not repaired. The manufacturer was notified of the failure and offered assistance in covering engine replacement, and partial assistance in covering trip disruption and vehicle rental expenses. The failure mileage was approximately 5,994.

NHTSA ID

11536090

Incident

Aug 2, 2023

Mileage

5,994 mi