Engine And Engine Cooling Problems of Jeep Wagoneer - part 1

Battery light came on and showed low voltage while driving down the highway along with a loud sound. Also the icon with a red a and a circle around it came on, the lights and icons starting signaling. The steering wheel instantly became difficult to turn and control. I started to pull off the road the best I could and the parking break engaged before I could come to a complete stop. I wasn’t even off the road before the vehicle came to a stop.

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Vehicle shut down 4 times in traffic almost causing an accident each time loss of power and steering. This all occurred in 1 day.

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Pulling from a stop sign across two lanes of traffic into a median, the car shut off and then started back. When it started back there were multiple warning lights. Pulled out onto highway and when coming to the next turn, there were no power brakes. Had to use extreme pressure to slow the vehicle down to a stop. Turned the car off and then back on and most lights went off.

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2024 Wagoneer was shifting weird, throwing itself in parking mode. Shutting off and making you stop while driving to shift in desired gear. Throwing itself in park going down the highway and about had us in a head on collision. Motor has loss of lower and overheating. Multiple misfires on multiple cylinders on all 3 occasions when returned to the dealership. Unable to fix on multiple attempts. Car is still in dealership garage awaiting to be repaired.

Vehicle began to randomly shut off at low speed while moving, while stopped and also in park. Has not yet happened at high speeds. All occasions are at speeds of less than 5 mph, no mil. Took to the dealership, diag of faulted aux battery. Battery replaced. Still very randomly will die in gear, at low to no speed, and also in park on occasion. Dealership update software of the bcm, pcm, and dcm. Returned to us with the same ongoing dying issue, returned to dealership, they did a wheel alignment, obviously didn't fix the dying issue. This vehicle carries my family, this will cause an accident as other traffic avoiding the vehicle has been the only factor in avoiding accident. No codes present. Vehicle is being refused to drive due to the uncertainty of when and where the vehicle will die randomly. This has happened numerous times over the last month, we will not accept the return of this vehicle until this problem is solved. This has so far only happened at low speed. Dealership has put many highway miles on it without replicating issue. It can be easily replicated by merely driving it from one parking spot to another or around a parking lot stopping and starting and traveling at speeds 5mph or less. This will happen at low to no throttle input. Vehicle will immediately start and run after being placed into park and hitting the start button, this is not the auto -start-stop feature working correctly. Dealership states this has only happened while pulling into a working bay at the dealership, unable to replicate results on the highway. It is currently the low speed dying that is the issue, this has been brought to the attention of the service dept on numerous occasions.

My car blew an engine while I was inside the car. The car was in park and running in a parking lot when the parking brake automatically engaged unexpectedly. Then, the gauge cluster instructed me to press the brake and push the start/stop button. I then got a warning on my gauge cluster, this time notifying my car entered starter protection mode. Repeating the process three times, me, my four year-old daughter, and were put at high risk of suffering burns as my car started to give off a burning smell of oil, as well strong white smoke from the hood, and shut off the car and opened the hood to release the smoke. If I had waited longer, there would have been a fire. The car is available upon inspection and is currently at my local dealer as of 8/11/2026 (thunder Chrysler Dodge Jeep ram, bartow, florida) for repairs. An engine failure was confirmed by discoveries by the dealer of a broken valve spring, a dropped cylinder, a cracked piston head, and an oil-coolant mixture. The dealer confirmed that this stemmed from stellantis's faulty "multi-displacement system" (mds) cylinder-deactivation system and "etorque" mild-hybrid system. Both systems work together to save fuel at cruising speeds and stoplights. However, due to the constant cycling of both systems, they contribute to the excessive engine stress and oil pressure fluctuation, which are known for the "ws" Jeep Wagoneer, the "dt" ram 1500, and the "wl" grand cherokee equipped with the 5. 7l hemi etorque v8. The dealer relayed the issues to stellantis north America, showing videos and photos of this catastrophic mechanical failure.

Vehicle lost eng power would not restart had to be towed to dealership they conformed problem.

While driving on the highway going 70 mph, the vehicle lost all power and shut down engaging the automatic emergency brake system. This is the second time it has happened. Car is currently at dealership awaiting service.

I purchased my 2023 Jeep Wagoneer new in March 2023. The vehicle has experienced multiple electrical/electronic safety-related failures. Beginning around oct. 2024, the digital instrument cluster intermittently failed to load after startup, leaving me without critical information including vehicle speed and fuel level. I photographed this occurring numerous times and repeatedly reported it to the dealer. The cluster was eventually replaced in April 2026. The vehicle has also unexpectedly shut off more than once while slowing or coming to a stop at a stop sign or traffic light. In July 2026, the entire right-front exterior lighting system failed. The right headlight, daytime/running light, front turn signal and cornering light are all inoperative while the left side operates normally. The dealer replaced the complete right headlamp assembly in Aug. 2026, but this did not correct the problem. All right-front lighting remains inoperative. The odometer is also continuously flashing. The dealer has not determined the cause and says further diagnosis and stellantis star technical assistance are required. As of sept. 2026, the lighting failure has persisted for more than a month despite a repair attempt. I am concerned about the safety risks from loss of required exterior lighting/turn-signal function, prior loss of instrument-cluster information, and unexpected vehicle shutoffs. I do not know whether these conditions share the same underlying cause.

While driving down the road, I came to a stop and the vehicle started flashing every light then would not restart or allow the vehicle to be put into neutral. Initially thought maybe a battery issue despite my new battery being only eight months old replaced the battery and all the electronics started going haywire requiring the vehicle to be towed.

While driving my 2022 Jeep Wagoneer at 40-45 mph on a live public road with my four small children in the vehicle, the vehicle suffered a sudden, catastrophic electronic and powertrain shutdown without warning. The engine completely died, and the vehicle immediately and forcefully engaged the electronic emergency parking brake, bringing the vehicle to an abrupt, unexpected halt in the middle of moving traffic. Once stopped, the vehicle completely refused to crank or restart. The electronic shifter and braking system effectively locked the vehicle in place, leaving me and my four young children dangerously stranded inside a dead vehicle in the middle of a live lane, creating an immediate, life-threatening collision hazard from oncoming traffic. The vehicle had to be physically towed away from the scene to a dealership, where it currently sits awaiting diagnosis. This vehicle has a documented history of prior electronic and dashboard glitches that the manufacturer has failed to permanently resolve under warranty. The sudden loss of propulsion combined with autonomous, unwanted emergency brake activation while in motion represents a severe, un-remedied safety defect that put the lives of my entire family at immediate risk.

Temperature alert went off for too hot. Was stranded in north carolina while driving for vacation. Had to get a rental while thermostat was replaced. This is a known and widespread issue yet no recall has been sent out.

For the past year I have been dealing with multiple vehicle failures with our 2025 Jeep Wagoneer. I have worked with my dealer a dozen times. Adnt he vehicle has been under service for roughly 13 weeks. Each time the dealership tells me the issue was a software update or they were not able to "recreate the issue". Our 2025 Wagoneer has been stalling out, shifting to park and then requiring a complete restart multiple times per week. This happens at low speed or at idle. On the afternoon of xxx, while driving the vehicle back from a different dealer for service of the same issue the vehicle stalled out completely on [xxx] just outside of [xxx]. Please see attached video. It is more than apparent that this vehicle is faulty and putting me and anyone else in my family that night drive this vehicle at risk. Over the past 7 months I have documented all issues and the dismissiveness of herb chambers Jeep Chrysler in danvers, MA where we purchased/leased the vehicle from. Herb chambers is stating I have to pay nearly $3000 dollars to exit our current lease. But, this is ridiculous as the vehicle is a danger to drive. Something bad will happen if our vehicle continues to be driven. And given the amount of time and energy I have wasted on trying to resolve these ongoing issues, Jeep/stellantis, should actually pay me for the inconvenience. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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The engine shuts off unexpectedly when the automatic start stop system engages. At the same time the engine shuts off, the power steering warning light illuminates and steering assist is lost. The vehicle must be restarted to regain power steering and continue driving. This has occurred on multiple occasions, including while the vehicle was slowing to a stop in traffic. The sudden loss of steering assist while the vehicle is in motion presents an immediate safety risk to the driver, passengers, and surrounding traffic. This appears to be a widespread issue. Other 2024 Jeep Wagoneer owners have reported the same combination of symptoms, sudden stalling paired with power steering warning lights, in complaints already on file with NHTSA. Suspected causes reported by owners and dealers include a failing 12v or auxiliary battery, a powertrain control module fault, and a power distribution center or wiring fault.

Vehicle: 2023 Jeep Wagoneer mileage at time of incident: 43,400 miles component: engine cooling system / thermostat incident description: this vehicle has experienced two separate thermostat failures since purchase. The first failure occurred the day after I purchased the vehicle, in April 2024, at only 104 miles. This time the vehicle overheated /stall pattern even after confirming coolant was at a sufficient level. The second failure occurred on Monday, June 22, 2026, at 43,400 miles. While driving with my wife, son, and son's friend as passengers, the temperature warning indicator activated, signaling an engine overheating condition. Shortly after, the engine lost power and stalled completely while the vehicle was in the middle of a busy intersection. With the engine off, I had no power assist for steering or braking, which made it extremely difficult to maneuver the vehicle out of the path of oncoming traffic. My family and I were nearly struck by other vehicles while attempting to get the disabled Wagoneer clear of the intersection. The recurrence of this failure at relatively low mileage (43,400 miles on a 2023 model) indicates a potential design or manufacturing defect in the cooling system, not an isolated incident. The second failure resulted in a complete loss of engine power in active traffic, creating an immediate safety hazard to my passengers and to other drivers on the road. Repair history: failure #1: April 2024, 104 miles failure #2: June 22, 2026, 43,400 miles cost of most recent repair: approximately $2,000.

While in drive the entire car turned off and systems shut off. I was in a busy street and it turned back on and all flashing alert lights were on.

Vehicle overheated and came to a sudden stop on a busy intersection, with my five young children in the car. Faulty thermostat.

While driving my car engine just shuts off without any warning. My car had a message on the dash after the engine stopped saying to shift the car to park and the emergency parking brake came on. I had to switch my four ways on in the middle of the road. If this happened on a busier street my vehicle would have been hit because I could not drive my car to the side of the road. It was just a dead stop without any notice there was a problem. No dash lights before the engine stopped or anything. Just messages stating to put the car in park after the problem. I have two little girls who are regularly in my vehicle with me and it is scary to think that my Wagoneer engine can just decide to shut off at anytime with no warning.

On at least 6-8 occasions car engine has shut off and car is automatically placed in emergency brake. This then requires you to place car in park, then restart vehicle. This happens while driving on interstate and when car slows down for traffic car engine without warning, will shut off, car will then automatically turn on emergency brake forcing sudden stop in interstate hwy traffic. Very dangerous as you have to place car in park and restart engine. Cars behind you are now slamming on brakes to avoid rear end collision. This has also occurred while sitting at traffic light when again car engine shuts off and has to be placed in park to restart. There is no warning, no warning lights, no check engine after incident occurs and according to dealership no engine codes recorded due to incident. I have left car at dealership on several occasion for several days. I believe it was replicated at dealership but again it registers no codes in engine computer to help resolve issue. When a car traveling down the interstate suddenly shuts down it is extremely dangerous placing my car and family at risk as well as any traveling behind us. Dealership has not been able to resolve issue. They can update software and the car will go several weeks without issue then suddenly you are back to engine shut down again I am second owner of 2024 Jeep Wagoneer s ii carbine. Purchased at GMC dealership. At time of purchase dealership provided maintenance records which showed no issues of engine failure. Unfortunately Jeep is not going to document this issue and does not appear to have a solution. This is an extreme safety concern.

At low speed and at stop the vehicle has shut off and shifted to park. Various warning were present on dash. No cel was present. The vehicle was able to be started and shifted to drive again.

The automatic emergency braking (aeb) system falsely engages under normal driving conditions when no obstacles, vehicles, or other hazards are present. These false activations occurred at very low speeds, while stopped, while parking, and while the vehicle is in neutral. When this happens, the vehicle brakes abruptly, shifts itself into park, and shuts off entirely. This is not normal system operation and creates a significant safety concern because the vehicle has stopped abruptly and disabled itself unexpectedly on numerous occasions while moving. While my vehicle was in neutral and moving through an automatic car wash on a track, the automatic emergency braking (aeb) system malfunctioned. My vehicle shifted itself into park and shut down. This sudden engagement caused the vehicle behind me to collide with the rear of my vehicle. As a result, the driver of the following vehicle has filed a collision claim against my insurance policy. My vehicle has been taken to the dealership 6 times for this aeb-related issue, along with other ongoing concerns, on the following dates: 09/11/25, 10/07/25, 11/12/25, 01/19/26, 03/09/26, and as of 6/05/26 is back at the dealership. The vehicle will unexpectedly shift out of gear at low speeds, requiring me to stop and place it back into gear before I can continue driving. The vehicle is currently at the dealership as of 06/05/26. Despite several repair attempts, the problems have not been resolved. I am extremely concerned that the aeb system will continue to malfunction causing a more serious collision and injury. The dealership was able to reproduce the problem in September; however, they have not been able to reproduce it again since that time. I have attempted to document each malfunction, including photos of the failure messages. I can provide additional information (receipts, video from accident, photos etc. ).

While my wife was operating our 2022 Jeep Wagoneer series iii (5. 7l hemi etorque, ~44,700 miles) at highway speed, the vehicle suffered a sudden and complete electrical power failure. Electric power steering cut out completely while the vehicle was in motion, creating an immediate safety hazard and nearly causing an accident. The vehicle was disabled and required towing. The dealership (safford Jeep) diagnosed fault code p0b32: catastrophic internal hardware and voltage failure of the 48-volt etorque hybrid battery pack. The 12-volt battery was also destroyed as a consequence of the 48v pack failure — the 12v charges exclusively via a DC-to-DC converter fed by the 48v loop; when the pack failed, the converter lost power and the 12v battery was starved of charge. Note: this incident is consistent with the active NHTSA odi preliminary evaluation of 2022 Jeep Wagoneer and ram 1500 etorque electrical failures. Fca/stellantis has acknowledged these failures are likely caused by an electrical concern. My p0b32 event represents a catastrophic failure of the exact system under investigation, with the additional safety consequence of complete loss of power steering at highway speed. Stellantis corporate case #96719164 is open. The vehicle has been repaired (48v battery pack replaced) but stellantis has declined to address the warranty access barrier created by their diagnostic system architecture. The dealer's equipment required a new 12-volt battery installation before it could communicate with the covered hybrid system — a $645 mandatory prerequisite to accessing a federal emissions warranty repair.

On 5/14/26 around 8:00am, I just dropped the kids off to school and entered onto the 5 lane freeway, 290, driving into work. Driving 70 miles an hour, the steering light and a warning light came on and then other lights started flashing. The engine shut off, and the steering wheel felt like it locked-up. I managed to exit off the freeway and the car came to a stop. The car would not restart. A tow was called to take to the nearest dealership. In August 2025, this happened and we were told it was a bad aux battery and it was replaced. Now we are told it is the pdc that is causing the issue.

My 2024 Jeep Wagoneer l with the 3. 0l hurricane engine began experiencing drivability and warning-light failures at very low mileage and within the first year of ownership. The vehicle was purchased new in October 2024 and experienced its first major drivability/towing event at approximately 10,372 miles. Over the following months, the vehicle experienced repeated check engine light events, shaking, sputtering, hard starting, loss of throttle responsiveness, drivetrain hesitation, and multiple towing incidents despite repeated dealership repair attempts. The most severe safety event occurred in may 2026 at approximately 18,850 miles while traveling on the interstate with my family and young children. Prior to this event, a florida Jeep dealership documented diagnostic codes p21a0 (cylinder 5 air/fuel ratio imbalance) and p0430 (catalyst system efficiency below threshold) and specifically documented in writing that “the #5 fuel injector is causing the fault” and likely damaged the catalytic converter. Despite this, we were advised the vehicle should be safe to drive home. While driving on the highway the following day, the check engine light began flashing and audibly beeping continuously, the vehicle began shaking aggressively, and acceleration responsiveness deteriorated significantly while traveling at highway speeds. We were forced to immediately exit the highway and abandon the vehicle at a Jeep dealership in georgia due to safety concerns and fear the vehicle could become unresponsive in traffic. The vehicle has been inspected multiple times by authorized Jeep dealerships in south carolina, florida, and georgia. Earlier repair attempts attributed the issues to software/update-related causes. The georgia dealership later replaced the catalytic converter but did not directly address the injector-related concern because the condition was not actively reproducible during their inspection despite the prior dealership’s written findings.

Vehicle started up on its own and continued to run. Key fob was laying on a night stand. No messages were displayed in car. I was able to turn it off.

Vehicle: 2024 Jeep Wagoneer (base model) the vehicle has experienced ongoing and progressively worsening engine performance failures, specifically involving unstable rpm behavior and loss of power during idle and re-acceleration from idle. These defects have been present on multiple occasions and occur under normal operating conditions. While stopped at traffic signals or intersections, the vehicle frequently exhibits sudden and erratic rpm fluctuations, followed by a sharp drop in engine speed resulting in complete engine shutdown. These shutdown events have occurred both while the vehicle is in park and while actively positioned in traffic, creating a hazardous condition. In several instances, the engine stalled unexpectedly while the vehicle was stopped at a red light, requiring an immediate restart in an active traffic environment. In addition, when transitioning from an idle state to acceleration, the vehicle has demonstrated abrupt surging and jerking behavior, causing sudden forward movement. This creates a significant risk of unintended acceleration and near-collision events, particularly in congested traffic conditions or when stopped closely behind another vehicle. The vehicle was presented to an authorized Jeep dealership for inspection. The dealership advised that no diagnostic fault codes were present and no defect could be identified. However, during the dealer’s evaluation, the vehicle did stall while being allowed to roll into the service bay in an idle state, directly corroborating the reported condition. Despite this occurrence, no corrective repair was made, and the vehicle was returned without resolution. The frequency and severity of these symptoms have increased over time, resulting in a vehicle that is unreliable and unsafe to operate. The continued occurrence of engine shutdowns and erratic acceleration behavior presents a clear and ongoing safety risk to the driver, passengers, and surrounding motorists.

This vehicle engine overheated. Leading up to the engine overheating event, there was an instance where the vehicle was driven for a mile or two and the air conditioning seemed to not be cooling. The vehicle was turned off for a few hours and restarted and the air conditioning appeared to work. However, the next day, the engine overheated. All repairs associated with this event were completed under warranty at no cost to the customer however, this is the 2nd Wagoneer we own and the other one had similar issues.

It seems that when the outside temperature is very warm/hot, when turning the car on or when idling at a traffic light or driving at very low speeds, on occasion the car will abruptly and without warning, shift itself into park and the emergency brake activates. I took the vehicle in for repair on 10/23/25 and was told there was a "thermostat internal failure" and that the "thermostat assembly" was replaced. I was just recently traveling in florida ( reside in NY) and the exact same problems occurred with my vehicle which I can only assume was due to the warmer temperatures that my vehicle has not been exposed to since the last repair as I reside in new york. I feel it should be worth mentioning that when turning off the auto start/stop button, the problems occurred less frequently but still happened on occasion. I've also had 3 other times when the "check engine" light came on. I was told that the first 2 were related to software updates with the transmission. On the other occasion, a "valve body" was replaced. I'm unsure if any of these were related. I've also had to replace the auxiliary battery but I don't think that's related so I didn't upload that file. Although I'm taking the vehicle to be repaired today, I took it in on 04/14/26 because the check engine light came on while in florida when the car shifted itself into park and the emergency brake was activated. The check engine light almost never comes on when this happens which I was told makes it difficult to diagnose issues. I didn't know how long this info is stored so I took the vehicle in upon returning to NY and was given a summary report after they hooked up a scanner. I couldn't get an appointment until today.

I was driving about 10mph around a turn and the motor turned off and I had to park to start the motor again. When I came to a complete stop the car engaged it's parking break and suddenly jerked forward. This has happened several times in the last year and this time I was the driver of the vehicle. It's a extreme safety issue and my wife has had it happen to her at a busy intersection more than one time.

The vehicle flashed a critical low battery warning while in operation driving. After traveling approximately 2 miles further, the vehicle warning lights started flashing and the vehicle shifted into park and shut off. In the middle of the road the vehicle could not be shifted into neutral and was stuck in a dangerous place. The emergency flashers shut off after 15 minutes while waiting for a tow truck. This vehicle has had two battery replacements in the last two years.

The vehicle experienced a charging system failure while driving. The battery warning light illuminated and battery voltage dropped to approximately 11. 7 volts while the engine was running. The vehicle continued to discharge the battery while being driven, creating a risk of loss of electrical power and possible vehicle shutdown. Diagnostic trouble codes included p0562 (system voltage low), p0bde (drive motor inverter temperature sensor e circuit high), and p0aee (drive motor inverter temperature sensor a circuit range/performance). The charging system was inspected by an independent repair facility. The serpentine belt was verified to be functioning properly and related fuses were checked. The repair facility diagnosed a failure of the 48-volt etorque belt starter generator (motor generator unit/mgu). The replacement part is reportedly on backorder. The condition is repeatable and occurs during normal driving. The battery warning lamp and low voltage condition were observed and documented. This failure creates a potential safety concern because the vehicle can lose charging capability while operating on public roads.

I am reporting a catastrophic engine failure on a 2023 Jeep Wagoneer (VIN: [xxx] ) that occurred within 163 miles of consumer delivery, suggesting a latent manufacturing defect present at the time of sale. The vehicle was delivered February 13, 2026 at approximately 29,750 miles. Engine noise was noted the same evening. By March 10, 2026, the vehicle was grounded at farris motor company [xxx] ) at 29,913 miles — 163 miles after delivery. The vehicle remains inoperable after 60+ days. Stellantis star case #xxx documents the following confirmed failures: collapsed lifters, failed camshaft, damaged rockers, and scored cylinder walls. Technician notes in the official star case record state the engine oil contained metal contamination so severe it "looked like paint. " borescope imaging confirmed scoring on cylinder walls. Stellantis has thus far refused to authorize a full engine replacement, instead directing the servicing dealer to replace only individually identified failed components — despite the fact that metal contamination of this severity compromises the entire lubrication circuit, including both turbochargers. The servicing dealer (farris motor company) has independently advocated to stellantis for full engine replacement and agrees the partial repair is insufficient. I am reporting this failure to NHTSA to document the defect pattern and request investigation into whether other 2023 Wagoneer vehicles with the 3. 0l hurricane engine may be experiencing similar latent valvetrain failures. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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 $1750 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.

Our 2023 Jeep Wagoneer overheats (indicates excessive oil temperature and low oil pressure) repeatedly (~20 times since we've owned the vehicle) under normal freeway driving causing a safety issue by creating the need to rapidly slow and exit the roadway to prevent vehicle engine failure. The issue occurs during sustained freeway driving around 60-65 mph. The car feels like it is not properly shifting to the next gear and the rpm lingers around 3000rpm - 3500rpm. After a few minutes at this sustained rpm the engine temperature gauge slowly climbs until the overheating warning light comes on and it typically followed by a low oil pressure warning. We have taken the vehicle to a Jeep dealer twice. They have tried to replicate the issue and have not been able to. We suspect that they are not driving in long enough (30-40min) to be able to replicate the issue. They also say that they are not able to pull up any error codes from the vehicle from an odb scanner. They say they can't diagnose the issue with out an error code and seam to be unwilling to explore the issue further. Most recently we've purchased our own odb scanner to try to gather any error codes because the Jeep dealer doesn't seam to want to investigate further without us gathering error codes for them. Today we drove the car for about 45min on moderately hilly terrain at around 60mph and produced three separate overheating / low oil pressure error incidents while the odb scanner was plugged in. The odb did not indicate an error code on any of the three incidents. We are frustrated because Jeep and their dealers have left us in a situation where we have a dysfunctional vehicle and seam to be unwilling to take reasonable measures to resolve the problem.

This is the 3rd time the Jeep wagooner has "bricked up. " the vehicle will shut off without notice and lose all power, the emergency brake comes on and stops vehicle abruptly. This poses safety risk to driver passengers and surrounding vehicles. The car will not be able to be restarted for 30 secs. Once car is restarted, dash lights flash everywhere and car loses power steering. This happen 1st time 2 weeks after I bought a brand new 2024 Jeep Wagoneer. I took it to dealer and they told me it was defective battery. They replaced battery, it has now done it two more times. I took it to dealer again and they once again claim it was defective battery again. 2 defective batteries in 18 mos of new car? there is something else going on w/electrical system in this car that drains batteries and abruptly shuts off vehicle.