2023 Jeep Wagoneer Electrical System Problems

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

On 10/27/25, the thermostat on my wagoneer exploded. It was supposedly repaired on 10/30/25. I read in the wagoneers forum that the thermostat is a common issue, but it could be the result of engine problems. On 2/4/26, I took my vehicle in for a routine oil change. I didn't drive the vehicle for a few days. On 2/7/26, I was driving and received an Error Message stating Max Engine Oil Level Exceeded. Immediate Service required. I returned it to the dealer to fix that issue. On 2/15/26, I noticed that my engine sounded louder than normal and by 2/16/26, the check engine light was on. On 2/18/26, I received an error message saying the engine temperature was too hot. I took it back to the dealership where it is today. I believe the wagoneers have faulty engines that need to be recalled.

This complaint involves a 2023 Jeep Grand Wagoneer L Series III, a full-size luxury SUV. The vehicle has experienced repeated electrical and powertrain failures culminating in complete loss of propulsion. On 01/22/2026, while traveling approximately 45–50 mph, the vehicle abruptly shut down without warning. The engine lost power, dashboard displays went black, and multiple warning lights illuminated simultaneously. I was forced to steer to the shoulder while a trailing vehicle had to swerve off the roadway to avoid a collision. This was a near-miss event and represents a serious safety hazard involving sudden loss of motive power at highway speed. Prior to that event, the vehicle had already stalled at a traffic light and had exhibited repeated check engine warnings, low-voltage faults, and module communication errors. The servicing dealer documented multiple diagnostic trouble codes affecting the Body Control Module (BCM), Ignition System Control Module (ISCM), and Powertrain Control Module (PCM). Manufacturer technical service bulletin software updates were applied in attempts to correct the issue. Despite these interventions, the electrical instability persisted. On 02/12/2026, only days after an auxiliary battery replacement intended to address voltage concerns, the vehicle would not start and required towing to the dealership at my expense. Additional fault codes are currently under review. The vehicle is also subject to an open recall with no remedy available, and the power running board motor has failed with replacement parts unavailable. This pattern of electrical failure, sudden shutdown in motion, and inability to reliably start presents an ongoing and unacceptable safety risk to occupants and surrounding motorists. The vehicle is available for inspection and has been repeatedly evaluated by an authorized dealer.

My air conditioning first went out in 2024 in 105 degree weather with a 3 month old baby, the dealer found the issue and fixed it. Then it went out again recently in the same type of weather and now since I am out of my warranty they are trying to charge me for the same issue, this is definitely a hazard to my health and the health of my children being that the weather can’t afford anyone with no AC. Plus they are refusing to see this as a manufacturer issue, when obviously it is. So I am complaining because this is definitely an electrical issue that could lead to other problems and the manufacturer needs to take responsibility and issue the recall because I am not the only consumer experiencing these issues. The faulty AC could lead to a fire or other serious issues that possibly cause injuries to me or my children

Repeated failures of electrical system of Wagoneer; vehicle towed to dealer who made some repairs, only for vehicle to fail again. Batteries fully replaced, issue got worse. Safety concern as vehicle will randomly not start even when traveling. Error messages with electrical shorts, failure of entertainment system.

Speedometer read zero while driving on the interstate and RPMs felt as if they were off. New electrical cluster and new battery by Jeep have already been replaced claiming it would resolve this issue.

Display has constant screen glitching

Vehicle speedometer has randomly blacked out on numerous occasions not allowing me to see any of my gauges. While driving on the interstate and merging the vehicle has stalled and RPMS stay stagnant yet you can hear the engine revving & then it acts like it will catch up. While driving up hill the vehicle began to stall almost like it was towing something when it was not. Back up camera has failed to turn on (resolved its self after I restarted the car). When I take it into the dealer error codes never seem to pop for these issues even though it tells me to see dealer, and read manual for proper oil and fuel usage. It’s like it has a mind of its own and it worries me to continue driving my three children around when electrical issues randomly happen every month or so & it needs constant updating. Both batteries have been replaced due to these issues draining the life out of them.

When starting the vehicle, the instrument panel cluster freezes on the start screen, eliminating the ability to see fuel level, speed, engine temperature. This has been reported to the dealership and examined by them. Although this was reported months ago, there has been no communication from the dealership. The dealer indicated that I am not alone in having this issue. Thankfully, it has always reset to date, but it is not safe to drive when in this configuration. There are no warnings before it happens. There is no pattern as to when it happens.

The wagoneer while driving twice has shut off, gone into park, and emergency break turned on. The problem is shutting off on its own while driving. This could cause a wreck obviously if happens at a higher rate of speed. Thankfully both times I was at about 5-10mph and nobody was behind me.

While driving, coming to a stop & starting from full stop at lights, car shut itself down. After 6 separate events it happened whislt in motion. Exvept this time it engaged the E break, park break, killed power steering, locked the steering wheel, reset all systems and put itself in park. ALL WHILE TRAVELLING AT 25mph. The vehicle jacknifed and bodilly injury sustained by driver.

Speedometer & gauges will randomly blackout and not work and it causes the engine to do funny things while driving. Battery drains from the issues (stranded twice even after new batteries installed). Rear view camera sometimes glitches as well and freezes up.

Two incidences, one week apart, of car turning itself off while stopped at a red light. While stopped at the light, the a sensor flashed and the car automatically shifted from “drive” to “park.” Entire car electrical system shut off. Driver was unable to shift back to drive, and was required to turn the car off while in a traffic lane, to then restart car to drive.

The vehicle will throw itself in the park and shut off and not restart in the middle of traffic. It's not even stopped. You can hear the parking pin trying to engage until it slows to a point and then it'll slam on and lock up the brakes and skid to a stall. This has happened four times now and the vehicle has been in the shop the entire summer. Someone is going to get killed from this.

Since purchasing the vehicle, I have experienced a serious and recurring safety issue: when towing, the trailer lights work for approximately five minutes before a portion of them blackout. This failure renders towing both unsafe and illegal, as it compromises visibility and compliance with traffic laws. To date, my vehicle has been into the dealership three separate times for the same issue: 1.First Visit: I was told the problem was with my trailers. I paid to have both inspected, and both were confirmed to be in proper working order. 2.Second Visit: I was informed that a software issue had been identified and corrected through an update. The issue persisted immediately afterward. 3.Third Visit: I was recently told that Jeep is now aware of this as a known vehicle software defect and that there is currently no resolution available. This situation is unacceptable. I purchased this vehicle with the expectation that it would safely perform its advertised towing functions. Instead, I am left with a vehicle that cannot legally or safely tow — the very purpose for which it was purchased.

Vehicle dash board lights up with trailer brake assist and brakes on highway while going 60+ speed. It does it periodically with no warn and becoming more frequent as I have been driving. I have stressed to the dealership since Jan about this issue and the safety. The lane assist keeps turning off and tells me to get service. Dealership says it is fixed but two days later still acting up.

The contact owns a 2023 Jeep Wagoneer. The contact stated that while driving at various speeds, the parking brake was independently engaged. Additionally, the front driver’s and rear passenger’s side windows would independently lower while driving. The contact stated that the vehicle would jerk while depressing the accelerator pedal, with the check engine warning light illuminated. The contact would restart the vehicle after each failure to resume normal operation. The vehicle was then taken to the dealer where the vehicle was serviced. Despite the initial repair, the parking brake and jerking persisted with the check engine warning light illuminated after each repair. After one visit, the check engine warning light returned soon after exiting the dealer parking lot and the vehicle was towed back to the dealer for service. The contact stated that the catalytic converters were replaced, and several electrical features were reset; however, the failure persisted. The manufacturer was notified of the failure. The vehicle was not repaired. The failure mileage was approximately 2,500.

The vehicle was bought June 2023, starting September 2023 we have had continual electrical problems. The blind spot warning system constantly activates and takes over. The automatic braking system randomly activates for no reason. The car will go into full braking and stop. This will happen at all speeds to include highway speeds. Now I am getting check engine lights and the code changes every time the light activates. When we take it to the dealership for service all we get is "we can't replicate the issue" and nothing is fixed. I ran a Car Fax and found that instead of coding the problem that it was brought in for, Jeep has coded it as maintenance inspection or electrical system checked. This is even when modules, radios or electrical systems have been replaced. I have a feeling that Jeep is coding this way to avoid recalls or to hide problems. I would think this constitutes fraud. My Jeep has serious electrical issues that Jeep will not address. I am stuck driving it as it is my only vehicle.

After very minor accident the car crash symbol and the car in lane symbol came on and will not turn off. Took to dealer and they said there was no update to correct the problem. Feel unsafe in a car that should be safe since it's new. And has error message of limited functionality.