Curious about lemon laws? Read our Lemon Law FAQ page
2022-2024 Jeep Grand Wagoneer and Jeep Wagoneer Overheating Problem
Problem Deep Dive
Editor’s Note: This article was originally published in 2024 and has been updated to reflect continuing complaints, which now include 2024 model year Jeep Wagoneer and Grand Wagoneer vehicles.
Lemberg Law is investigating widespread complaints about a thermostat defect in 2022, 2023, and 2024 Jeep Wagoneer and Grand Wagoneer vehicles. The defect causes engines to overheat without warning. It is limited to vehicles with the 3.0L inline-six Hurricane Twin Turbo engine. Vehicles with V8 engines are not affected.
Wagoneer Overheating Problem Overview
A faulty thermostat in the 3.0L Hurricane Twin Turbo engine can cause coolant flow to stop, leading to sudden and potentially dangerous engine overheating. Owners report little or no warning before symptoms appear. Owners with this defect may experience any of the following:
- Sudden engine overheating with an “Engine Overheated” warning message
- Reduced engine performance or a sudden drop into reduced power mode
- Transmission slipping
- Erratic temperature gauge readings
- Low oil pressure warnings
- Check engine light illumination
In more serious cases, owners have reported blown head gaskets and complete engine failure requiring full replacement.
Which Vehicles Are Affected?
This investigation currently covers the following vehicles equipped with the 3.0L Hurricane Twin Turbo engine:
- 2022 Jeep Wagoneer and Jeep Grand Wagoneer
- 2023 Jeep Wagoneer and Jeep Grand Wagoneer
- 2024 Jeep Wagoneer and Jeep Grand Wagoneer
Vehicles with V8 engines are not affected. If you are unsure which engine your vehicle has, check your window sticker, owner’s manual, or ask your dealer to confirm.
What Does Jeep Say?
The Original Customer Satisfaction Notification (June 2024)
Stellantis issued Customer Satisfaction Notification Reference 26B in June 2024. This was the company’s first formal acknowledgment of the defect. The document confirmed that the thermostat ball valve drive pin on about 5,100 vehicles could fail due to contamination. This condition could cause the thermostat to fail in a closed position, prevent coolant flow to the radiator, and potentially cause the engine to overheat.
It covered only 2022 and 2023 model year vehicles with the 3.0L GMET6 engine. Stellantis also acknowledged that the campaign excluded some affected vehicles entirely. Dealers were instructed to replace the thermostat, a repair estimated to take about 3 to 4 hours.
Technical Service Bulletins (2025)
Complaints continued after the 2024 notification, and they spread to 2024 model year vehicles. In response, Stellantis issued Technical Service Bulletin 09-006-25 on March 27, 2025. This bulletin expanded the scope to cover 2022, 2023, and 2024 Wagoneer and Grand Wagoneer vehicles built on or before October 1, 2024, with the 3.0L I6 Hurricane Twin Turbo engine. Stellantis also released the bulletin as Rapid Service Update 25-047.
On October 7, 2025, Stellantis issued a revised version, TSB 09-006-25 Rev. A. The fix remains the same: thermostat replacement. Notably, the revised bulletin lists a different thermostat part number for 2024 model year vehicles than for 2022 and 2023 models.
Why a TSB Is Not a Recall
A technical service bulletin is not a recall. The bulletin itself states: “This is not a proactive repair.” Dealers are not required to contact owners or perform the repair unless an owner comes in and reports a symptom. An owner whose vehicle has not yet overheated may receive no notice and no repair, even if the vehicle falls within the affected range.
As of early 2026, no safety recall has been issued for this defect.
Owner Experience Overview
As consumers and Stellantis confirm, faulty thermostats cause engines to overheat. Related issues include reduced engine performance, erratic temperature gauge readings, and illumination of the check engine light.
What Are Owners Experiencing?
Complaints filed with the National Highway Traffic Safety Administration and posts on the Wagoneer Fans community forum show a consistent and troubling pattern. In many cases, there is little or no warning before the engine overheats. Several owners have been left stranded, faced repeat failures after repairs, or incurred significant out-of-pocket costs.
No warning. Family stranded in a turn lane
“Vehicle was driven for 5 minutes before alerting that it was overheating. While attempting to pull into a safe location off of a main road, the vehicle would not allow me to accelerate. This left our family stranded in the turn lane. I was unable to restart the engine or shift into drive.”
Thermostat failed while towing. No warning before power was cut
“The thermostat failed causing the vehicle to go into a reduced power mode while climbing a hill with a trailer. The dealer has a technical service bulletin for this issue but the overheating can cause engine damage or an accident when the vehicle has reduced power. There were no warnings on the cluster until the car was already in a protection mode and power had been reduced. The cluster coolant temperature gauge is slow to respond and not accurate.”
Second overheating event. Over $1,750 in repair costs
“This vehicle has had 2 incidents where the engine overheated. In both instances, the thermostat has been replaced under warranty. Due to this most recent overheating event, the repairs were over $1,750 excluding the portion of repairs under warranty. There were no warnings before the engine overheated, and the vehicle was being driven on the freeway at appropriate speeds. This is not the first time this vehicle has overheated.”
What To Do If You Are Experiencing This Problem
If you own a 2022, 2023, or 2024 Jeep Wagoneer or Jeep Grand Wagoneer with the 3.0L Hurricane engine and have experienced overheating, engine failure, or related issues, Lemberg Law wants to hear from you.
Contact us today for a free case evaluation. We do not get paid unless we win. Under lemon law, if we pursue your case, Stellantis pays your legal fees. Call our helpline or fill out a contact form and we will assess your situation at no charge.
Sources:
- 2022 Jeep Wagoneer NHTSA Complaints
- 2023 Jeep Wagoneer NHTSA Complaints
- 2024 Jeep Wagoneer NHTSA Complaints
- 2022 Jeep Grand Wagoneer NHTSA Complaints
- 2023 Jeep Grand Wagoneer NHTSA Complaints
- 2024 Jeep Grand Wagoneer NHTSA Complaints
About the Author:
Sergei Lemberg is an attorney focusing on consumer law, class actions related to automotive issues, and personal injury litigation. With nearly two decades of experience, his areas of practice include Lemon Law (vehicle defects), Debt Collection Harassment, TCPA (illegal robocalls and texts), Fair Credit Reporting Act, Overtime claims, Personal Injury cases, and Class Actions. He has consistently been recognized as the nation's "most active consumer attorney." In 2020, Mr. Lemberg represented Noah Duguid before the United States Supreme Court in the landmark case Duguid v. Facebook. He is also the author of "Defanging Debt Collectors," a guide that empowers consumers to fight back against debt collectors and prevail, as well as "Lemon Law 101: The Laws That Lemon Dealers Don't Want You to Know."
See more posts from Sergei Lemberg
Our 2024 Wagoneer has the same issue at 48,000 miles. The Customer Satisfaction Notification only applied to 2022-23 models with the 3.0L engine, and apparently not even all of those based on comments quoted above. The CSN was issued several months after we bought our 2024. Why were no 2024s included? Did Stellantis think they had fixed the problem on those, and possibly some 2023s as well? Obviously the issue still exists in at least some 2024s. Now I’m debating if I should get it fixed right away or fight to get it fixed under warranty.
71k, sitting at a light the vehicle gave a warning that the engine was overheating. Took the vehicle to a Jeep dealer was told they will look at it 5 days later they need to order the parts, warranty expired, $2,200 estimated to pay for thermostat, can’t get a loaner because the jeep is not under warranty.
Just paid $1054.02 to replace the thermostat in my 2023 Jeep Wagoneer Series II. Jeep started to overheat, would not shift properly and the low oil pressure light came on. Vehicle has 39,592 miles and only the drive train warranty is still in effect. Had to rent a car for the time the Jeep was in the garage. That’s another $339.31 for a recurring problem with thermostats.
I have a 2023 grand wagoner that only “over heats” when going over mountains. I pull over for 5 minutes and it goes back to normal. The hood is never hot and it “cools” so fast makes me think it is not a “true overheating issue”. However, I do not want to blow out my engine either. i am now worried after reading all the other comments that this may become an issue when driving on flat terrain too.
Drove my 2024 Jeep Wagoneer with 24,727 miles on it to drop my kids off at school this morning. On my way there the engine got louder than normal as I approached the school (so I thought something might be off). After dropping my children at school, the gears were not shifting properly with acceleration from a stop sign. I noticed that the car was overheating while drive 39 mph. Stopped, turned the car off and then back on. Drove a few blocks more and the car overheated, low oil pressure flashed – all under 45 mph. Car is at the dealership now, but I am not optimistic based on reading a variety of posts online. Ready to sell as we just purchased in November 2024 and haven’t had the car a year yet!
2023 Wagoneer Series II Carbide and the same issue with the thermostat. Did not extend the warranty and just went over the mileage, so will have to pay out of pocket. Estimate is close to 2k to repair the issue. By the grace of God, I made it home with my two kiddos or we would have been stranded. The car was in its lowest gear and the air quit working. I’m worried about what damage this caused to other parts of my car. The fact that they have not issued a recall for all of the Wagoneers is insane.
2023 Wagoneer Series 2, 63k miles, it has been at the dealership for the past 40 days and a total of 80 days in the past 3 months. Overheats in a 3 seconds out of no where. Had me in the middle of an intersection overheated and went into limp mode. I was lucky that traffic seemed to understand as it limped at 1mph out of the intersection. I am glad I have extended warranty, but this keeps happening. I am worried it will happen yet again and our safety will be in jeopardy next time.
Same issue on 2024, 9k miles series 2 carbide
Certified used Wagoneer L with 26,000 miles. I have the overheating warning, drove to dealer and they haven’t figured out. So I called and told them about what I read. Only been having a month thinking about trading in once it’s fixed.
I just had my 2023 Wagoneer overheat. I have had it 16 months and 16,400 miles. Was told it is thermostat. Not certain they checked anything else, worried other issues may have happened considering it got to the point the transmission wouldn’t pull the Wagoneer but the gauge only said 260. Afraid if there are further issues my lemon law time frame will expire (18 months/18,000 miles). Wasn’t even thinking of issues until I started reading the forums on overheating.
Bought a 2023 CPO Wagoneer Series III with the 3.0 Hurricane engine with 32k miles. Beautiful and loved it….until the overheating began. As others note, began suddenly and without any warning. High engine revving, remaining in 1st gear, and overheating with another alert for low oil pressure. Stranded kids and me on the way to school yesterday. Had to pull over and walk. Getting out of traffic was difficult – vehicle would not move faster than 1mph as someone else noted here. Thankfully we were safe. Three dealers in my area – earliest appointment to even see the car much less repair it is 4 weeks away. Meanwhile, am I supposed to rent a vehicle? Seems to be the only option, but clearly not a customer-first option.
I have a 2022 Grand Wagoneer Series II Obsidian with the 3.0 hurricane. I have experienced the thermostat/overheating problem and took it to the dealership. They replaced the thermostat based on the Customer Satisfaction Notification Reference 26B, issued in June 2024. 4 days later the car overheated and left us stranded in the middle of the road with the kids and dog in the back on a Saturday evening. Coolant was all over the road and the car would not drive. Right now it is at the dealership and with today being a holiday, I have to wait another day to find out how they will handle the towing bill, the repair, and a temporary replacement vehicle. Vehicle only has 14K miles on it.
I have a 2023 Wagoneer Series II with the 3.0 hurricane. It overheated and left us stranded back in early September. Earliest any of the dealerships near could get it in was at the end of September. Had to take the day off work and haul the wagoneer to a dealership an hour away. Service department figured a stuck thermostat and ordered a replacement. Unfortunately that was part was on 45 day back order. I got a hold of Wagoneer directly and was able to get the part a few weeks sooner. The dealership replaced the thermostat but unfortunately Wagoneer still overheats. Waiting to hear back from dealership if it was another faulty thermostat or perhaps a water pump issue. Of course no dealer near me has a loaner vehicle.
This just happend to me as well. Dropped kids off at school and as soon as I started to leave it instantly overheated, engine revving to high, low oil pressure light came on. Drove a short distance and pulled over. Called roadside assistance and was told it would be 2-2 1/2 hours before tow truck would arrive. Engine cooled, drove a few more blocks, same problem. Pulled over again, let it cool, drove a few more blocks. This time I could barely turn the steering wheel but made it safely to another parking lot. Called a local tow company who got to me in 15 minutes and towed my car to the dealership. It has been there for a week now and they can’t even try to order the thermostat until tomorrow. No ETA when it will be available.
My daughter’s car has had the thermostat replaced before and the car did it again. My concerns is the internal engine parts are being damaged and the longevity of the engine life has been shortened due to the engine overheating.
I would like a completely new engine and another 36000 added to the Wagoneer of complete refund with interest, The car is almost out of warranty.
Overheating engine, stranded in middle of intersection with young children. SMDH these all need to be recalled. Lemon! Wagoneer is complete junk. 20k miles now and at 8k the dang catalytic converter and other exhaust components were replaced. Now here we go again. Let’s hope they can get me in a Wagoneer rental or I will be contacting corporate for a prorated refund on my monthly payment!