2022 Jeep Wagoneer: start-stop system problems

Filed Sep 23, 2026 · Electrical · SC

While driving, vehicle suddenly displayed low voltage and "power saving mode" error messages. Multiple systems shut down including AC and radio. With engine stop/start disabled, engine died while slowing to a stop, automatically engaged parking brake, and vehicle shut down. Was able to restart and limp home. Vehicle would not re-start after shutdown. Battery was completely discharged (<9V) and still hot to the touch 4 hours after turned off. Battery tested good, but was replaced out of caution. Current static battery voltage 12.3V. Charging voltage while running 13.4V. Voltage while running with heavy electrical load (AC, radio, heated seats, headlights on) 12.9V. Believe this to be related to known issues with eTorque generator

Filed Aug 30, 2026 · Electrical · GA

Vehicle Information: 2022 Jeep Wagoneer (5.7L V8 eTorque Mild-Hybrid System)Component Affected: Electrical System / Hybrid Propulsion System Defect: My 2022 Jeep Wagoneer continuously experiences sudden engine stalling and unexpected shutdowns while operating in Auto Start-Stop mode. When the vehicle comes to a complete stop at a red light or intersection, the engine shuts off normally to save fuel. However, when I release the brake pedal to accelerate, the vehicle fails to restart automatically. Instead, the vehicle suffers a total loss of power, drops the transmission directly into Park (P), and abruptly engages the emergency parking brake. This creates an immediate, severe safety hazard as it leaves me completely stranded in active traffic and at busy intersections. To get moving again, I am forced to completely cycle the push-button ignition manually. Additionally, the vehicle regularly fails to remote-start, turning itself off immediately due to the electrical fault. A diagnostic scan reveals DTC P0B42 (Hybrid/EV Battery Voltage Sense "B" Circuit Low). This dangerous stalling pattern directly matches the active federal probe under the federal safety agency Investigation PE24018 regarding 2022 Jeep Wagoneer 48-volt electrical and power distribution failures.

Filed Jan 28, 2026 · Electrical, Engine · OK

My 2022 Wagoneer has stalled out 3 times at intersections as a result of the automatic start/stop. This is extremely dangerous! I have been stranded in the intersection 2 out of the 3 times until I was able to turn off/on the vehicle and trouble shoot it.

Filed Dec 12, 2025 · Brakes, Engine · 10,000 miles · NE

The contact owns a 2022 Jeep Wagoneer. The contact stated while driving at slow speeds, the Automatic Parking Brake erroneously activated, and the vehicle suddenly stalled. The contact shifted to park(P) and restarted the vehicle. The check engine warning light illuminated, and the engine Auto START/STOP message was displayed. The contact stated that the failure had occurred on several occasions. The vehicle was taken to the local dealer on several occasions to be diagnosed, but the cause of the failure was not yet determined. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was offered. The contact was informed that the VIN was not included in the federal safety agency Action Number: PE24018 (Electrical System, Hybrid Propulsion System, Engine, Engine and Engine Cooling), which the contact related to the failure. The failure mileage was 10,000.

Filed Dec 6, 2025 · NH

At a busy intersection the vehicle failed to restart on the automatic start/stop function. The vehicle behind almost hit us as the brake lights turned off when the pedal was released.

Filed Dec 6, 2025 · NH

At a busy intersection the vehicle failed to restart on the automatic start/stop did not restart the vehicle. After getting the vehicle restarted it the ebrake activated mid way through the intersection. This occurred after the dealer applied an update to fix the issue. This was worse than the first incident as the brake was applied after the vehicle started to move after getting it restarted.

Filed Nov 6, 2025 · Brakes, Electrical · NC · crash

I was stopped at a red light, stacked about 10 cars deep. Once the light turned green, I pressed the gas pedal, but the auto start-stop feature malfunctioned and turned the car completely off. I then pressed the button to reactivate the ignition, and pressed the gas pedal again. After moving forward a few car lengths (or more), the computer engaged the emergency brake and clamped down on the wheels. I was then rear-ended at about 15-20mph.

Filed May 16, 2025 · Electrical, Engine · NC

vehicle will randomly lose all throttle power when driving and at the same time following a warning beep will flash a large red lightning bolt with the following messages: service electronic throttle control,stop/start unavailable service stop/start system, service electronic stability control and check engine light. Engine continues to run but car will not move. Once vehicle is able to be pulled over to the side of the road and turned off then cranked back up the vehicle will drive normally. Check engine light will stay on for several key cycles then it will eventually go away. This has happened at intersections and at speed on the interstate. Repair of this issue with the vehicle has been attempted 4 times and is currently at the dealership now for the 5th time and the diagnosis is that they can replace the throttle module but there are not codes pointing to that as the issue and it was stated that is is just a guess and I can then drive it and hope that it is repaired. The vehicle has been to two different dealerships for the issue as the 4th occurrence was too far away from home to get it back and it was only 319 miles between failures. The issue has not been taken seriously by the dealerships nor the customer care agents that have been contacted through the last 3 occurrences. The agent has been helpful in getting a rental or loaner to drive and delivering my vehicle back but the gravity of the problem has not been fully grasped by those examining the vehicle. The only reason this has not resulted in a crash is that each time it has occurred a space to get off the road was accessible. This will not be the case if the vehicle is continued to be driven. I did continue to drive the vehicle with the hope that the repairs would have been adequate to prevent the issue from reoccurring. This issue began in september 2024 at 30k with most recent 5th time noted below.

Filed Jul 24, 2024 · Engine · MI

Stop start feature does not work. Occasionally engine will shut off and not start. Vehicle can roll during this time. In order to restart transmission needs to be put into park, vehicle turned off, and then back on

Filed Feb 16, 2023 · Brakes, Electrical · TX

In October 2022 our Wagoneer was taken to the dealership due to the radio display turning off and on, the passenger screen not functioning properly or connecting through the HDMI. We were told the issue was resolved after replacing parts in the dash. About a month later the radio screen again turned off while driving. In February 2023, while driving the Wagoneer in the fast lane on the interstate, the power steering went out, the brakes would not work and the vehicle proceeded to shut down. The dash repeatedly displayed different instructions, "press brake and push button to start," "vehicle not in park," "shift P to start," "stop/start restart required," "shift to P then desired gear," and the red battery symbol appeared on the dash. After making it safely to the shoulder, the vehicle did restart. We were blessed not to have been involved in a collision, as we were initially surrounded by commercial vehicles. Luckily, it appears the commercial truck drivers noticed something was wrong and slowed their vehicles, allowing us to move from the fast lane to the right shoulder before our vehicle came to a complete stop. A short time later, we were able to start the vehicle. 30-45 minutes later while driving, the dash and radio screen turned off. After stopping in a parking lot and turning the vehicle off for a bit, we started the vehicle. When placing the vehicle in drive, it moved forward a few feet and the parking brake was somehow engaged on its own. Our vehicle was taken to a nearby dealership for inspection 2 days ago and we have not heard back from them. We did show the service department manager a video that was taken while the shut down was occurring that showed the instructions being displayed on the dash as well as the speedometer showing the vehicle coming to a stop.