2025 Ram 1500: start-stop system problems

Filed Nov 4, 2026 · Electrical · NC

**2025 Ram 1500 Warlock – Complete Electrical Shutdown During Automatic Start/Stop Restart** My 2025 Ram 1500 Warlock, equipped with the 3.0L Hurricane twin-turbo engine, has approximately 22,000 miles and is experiencing a serious safety-related malfunction involving the automatic start/stop system. When stopped at a traffic light or intersection, the automatic start/stop system shuts the engine off as designed. While my foot remains on the brake, the vehicle's electrical systems continue operating normally. However, when I release the brake to accelerate, the engine does not attempt to restart. Instead, the vehicle experiences a complete electrical shutdown, including the instrument cluster, infotainment system, and interior lighting. The transmission automatically shifts into Park, and the electronic parking brake engages. The vehicle remains shut down until I manually press the engine Start button. It then starts normally. There are no check engine lights, warning messages, or other indications of a problem before or after the failure. This malfunction creates a significant collision hazard because the vehicle becomes unexpectedly immobilized at intersections when traffic begins moving. Following drivers may reasonably expect the vehicle to accelerate when the traffic signal turns green. At approximately 1,000 miles, the vehicle previously displayed a battery-not-charging warning. An authorized Ram dealership replaced the auxiliary battery under warranty, and the warning disappeared. The automatic start/stop system operated normally more recently, but this shutdown malfunction has since developed without any known changes to the vehicle immediately preceding the failures. I am concerned that this condition could result in a rear-end collision or leave the vehicle immobilized in an active traffic lane. I am requesting that the federal safety agency investigate whether this is a safety-related defect affecting 2025 Ram 1500 vehicles equipped with the 3.0L Hurricane engine.

Filed Oct 19, 2026 · Electrical, Engine · IN

What component or system failed or malfunctioned, and is it available for inspection upon request? PCM, Auto Start-Stop System (based on what I was told by the RAM dealership and paperwork) How was your safety or the safety of others put at risk? When coming to a complete stop at an intersection, the vehicle stalled and shut down entirely, and the vehicle automatically shifted to park. Vehicle was able to be restarted only after pressing the brake, pressing the ignition button, and manually shifting into drive. This could have caused a collision if I was in stop-and-go traffic in a busier area, because I did not know how to respond to the vehicle randomly stalling to begin with. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. RAM dealership was able to replicate. Service advisor told me there was a Technical Service Bulletin released on 10/6/26 that addressed vehicle stalling due to the PCM and auto start-stop system. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No. This has only been inspected by Academy Chrysler Dodge Jeep Ram in Tipton, IN Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? There were no warning lamps, messages or other symptoms of the problem prior to failure. After the third time the vehicle stalled, the check engine light illuminated. This vehicle was then towed to the dealership for inspection.

Filed Sep 29, 2026 · Brakes, Engine · MN

While going through an automatic car wash with the engine running, the transmission in Neutral, and my foot off the brake, my truck suddenly shifted into Park and shut off. When I tried to restart it, the display showed "Key Fob Not Detected," even though the fob was in my hand. It took several attempts before the truck restarted. Fortunately, the vehicle behind me did not hit me. This happened three more times before I made it out of the wash. I have since disabled the Engine Stop-Start feature and tried again, with the same result. The truck continues to shift into Park and shut off at random while in a car wash. This is a safety concern, and I would like it diagnosed and repaired.

Filed Sep 20, 2026 · Electrical · MI

This 2025 ram 1500 has an intermittent but serious safety defect that can cause a loss of power/stall during the automatic start/stop sequence, including while I am in active traffic or in an intersection. When the failure occurs, the truck may not restart or respond normally when I need to accelerate, leaving me stopped and exposed to cross traffic or rear-end impact. The vehicle has also displayed abnormal transmission/gear messages during start/stop operation, including prompting me to change the shift gear from park without me intentionally selecting park. This behavior is unpredictable and creates a real risk that the vehicle can become immobilized or enter an unexpected gear/shift state in traffic. I have taken the vehicle to suburban chrysler dodge jeep ram of garden city, michigan, four times for this same safety concern. The dealer has not repaired the condition, stating they cannot replicate it because it is intermittent. An intermittent defect that causes stalling or loss of propulsion in traffic is still a safety defect, and returning the vehicle unrepaired does not eliminate the danger. I am requesting that the federal safety agency investigate this condition on 2025 ram 1500 vehicles, including the start/stop, powertrain, transmission control, and related software/electronic systems. This vehicle has put me in dangerous situations multiple times, and I am concerned that a crash, injury, or death could occur if this defect is not identified and corrected.

Filed Sep 1, 2026 · Brakes, Electrical · FL

While operating the vehicle in heavy traffic (stop and go) conditions at about 10 mph the vehicle displayed an error message (STOP START RESET REQUIRED) shifted itself from DRIVE to PARK and applied the PARKING BRAKE uncommanded. Note that the auto stop start was in the ON position for several occurrences, but even with the automatic stop/start OFF the same anomaly occurred. These events happened during rush hour traffic on I95 in the express lanes as well as inside of an automatic car wash and during that instance it resulted on another vehicle striking mine from behind. To get the vehicle to move again required me to STOP the engine, switch to PARK, RESTART the engine and release the already applied parking brake.

Filed Sep 1, 2026 · Electrical, Engine · FL · crash

While operating the vehicle inside of a car wash, with the transmission in Neutral and the engine at idle (car was propelling the vehicle) the dash chimed, showed an error message for STOP START REQUIRES RESET, shifted into park and set the parking brake uncommanded. This resulted in my vehicle being struck from behind by another vehicle inside of the car wash. The only remedy to get moving again was to STOP the engine, manually shit to PARK, restart, then release the parking brake.

Filed Jan 20, 2026 · Electrical, Engine · TN

The auto stop/start "feature" does not work properly. When it malfunctions, the vehicle goes into Park and requires to be turned off and back on again. This happened to me coming out of my neighborhood at a yield sign. I stopped very briefly as it was a Yield sign. The engine shut off and it threw a MIL. I had to turn it off and back on. I took it to the dealer who said they did a flash upgrade and reset the MIL. Since then it has done it to my wife multiple times. One time was at an intersection and she panicked which caused more delay in getting the vehicle going again. It almost seems like a stall. When I disable the stop/start with the button on the dash it (obviously) does not have this problem. The auto stop/start needs to be eliminated from vehicles without fear of voiding warranties.

Filed Dec 16, 2025 · Electrical, Engine · LA

Despite multiple repair attempts, the vehicle continues to experience significant, recurring issues that substantially impair its use, value, and safety. Since purchase in April from Hebert’s Town and Country, the vehicle has been in service nine (9) times, totaling approximately 50 days out of service. The last four service visits were for the same issue and the same diagnostic fault code, demonstrating a persistent, unresolved defect. The check engine light is currently illuminated again. The primary unresolved issues include: recurring check engine light with repeated fault codes, multiple battery replacements, the vehicle being completely inoperable and requiring towing, and the auto start/stop system shutting the vehicle off and failing to restart while stopped in traffic. These conditions present clear safety concerns and have persisted despite repeated repair attempts by authorized RAM dealerships. All service records and diagnostic reports are available for review. This vehicle was previously submitted to arbitration. While the arbitrator acknowledged manufacturing defects, the conclusion that the defects did not substantially impair the vehicle and were “separate and distinct” is inconsistent with the diagnostic evidence. The repeated appearance of the same fault code across multiple visits indicates a single, recurring nonconformity rather than unrelated issues. Since the arbitration decision, the vehicle has continued to experience the same problem and has been returned for additional repairs. The vehicle is now awaiting inspection by a manufacturer field engineer due to the dealership’s inability to diagnose or permanently repair the defect, further confirming that prior repair attempts have failed. In good faith, I contacted the manufacturer’s retention team to seek alternative resolution options, including replacement or trade-in, which were denied. Please confirm receipt of this request in writing and advise on next steps.

Filed Mar 21, 2025 · Driver assistance, Electrical · WA

150 amp fuse blew. Caused auxillary battery to die and the truck didnt start. Caused the check engine light to turn on and many features such as lane keep assist, adaptive cruise control, remote start, and auto start/stop didn't work. The manufacturer and dealer states that it's not a warrantied item. Thr 150 amp fuse connects both batteries

Filed Feb 22, 2025 · Engine · NC

Engine auto stop/start (ESS) fails to start causing unsafe conditions. Restarting procedure sometimes requires multiple attempts to get the vehicle moving again in traffic.