2025 Acura MDX electrical problems

Filed Oct 26, 2026 · Electrical, Engine · 14,000 miles · TN

The contact owns a 2025 Acura MDX. The contact stated upon coming to a complete stop at an intersection downhill, the engine turned off while the instrument panel and infotainment center remained operable. The contact was unsure if the engine Auto START/STOP system was engaged during the failure. The message "Shift to Park" was displayed. The contact attempted to shift to park(P), to turn off and restart the vehicle, but the vehicle failed to respond. The message "Transmission Error-Take to Acura Dealer" was displayed. The contact's husband arrived on the scene to assist, but the Police advised the contact that an emergency tow was required due to the potential crash. The Police requested emergency towing services, and the vehicle was towed to an impound lot. The contact associated the failure with the federal safety agency Action Number: EA25004 (ENGINE AND ENGINE COOLING). The selling dealer, Acura of Memphis (2611 Ridgeway Rd, Memphis, TN 38119) and the manufacturer were contacted by email. The failure mileage was approximately 14,000.

Filed Oct 26, 2026 · Electrical, Engine · TX

While driving and coming to a stop, the engine shuts down and will not restart. Error "To continue to drive, depress brake pedal and push Switch". After 10 minutes of trying to start the car it finally started.

Filed Oct 13, 2026 · Electrical · PA

Faulty and auto-stop/start system glitch where the engine fails to turn back on. This issue frequently occurs while driving in traffic or at a stop light. This issue happens daily become extremely dangerous as car unexpected turns off and fails to turn back on a busy road. There is no option to turn off the auto-stop/start system to avoid the glitch.

Filed Oct 8, 2026 · Electrical, Engine · PA

On two occasions my vehicle stalled out when the idle stop feature failed to restart the engine in traffic. I could not restart my vehicle initially and it took several attempts to restart. Because I was at a stop in an intersection waiting to turn this could have resulted in a serious accident. There was no warning light or other indication of an issue prior to, during, or after the first incident. This was subsequently reproduced and documented with the dealer. They indicated they are seeing issues with many other vehicle of the same model and year but indicated they couldn't say much more. The dealer said they would replace the starter but did not definitively say it would solve the issue. Because they did not have the part in stock thet advised me to continue driving in the meantime with the idle stop feature disabled; however, operators must remember to do this manually at each drive.

Filed Sep 28, 2026 · Electrical, Engine · CA

The Auto Idle Stop has activated normally at traffic lights, but on two occasions the engine shut off and then failed to automatically restart when I released the brake. A yellow warning light with an exclamation mark also appeared on the dashboard. The most recent incident happened yesterday, 09/25/2026. There have also been several other times when the engine did restart, but it took noticeably more effort or longer than normal to restart from Auto Idle Stop.

Filed Sep 26, 2026 · Electrical, Engine · MD

My 2025 Acura MDX completely stalled in active roadway traffic and failed to restart. The failure occurred during a routine stop in traffic, tied to the Auto Idle-Stop / restart sequence: when releasing the brake pedal to accelerate, the engine did not restart, leaving the vehicle completely dead and stranded in the travel lane, creating a severe risk of a rear-end collision. I brought the vehicle to an authorized Acura dealership for repair. The dealership diagnosed the issue and replaced the starter motor under warranty. However, shortly after picking up the vehicle, the exact same failure occurred again in traffic. The vehicle was brought back in, and the 12V battery and charging system were tested and deemed functional, but the vehicle continues to stall and fail to restart. Replacing the starter and testing the battery has not resolved this recurring defect, which leaves the vehicle intermittently immobilized in active traffic lanes.

Filed Sep 16, 2026 · Electrical, Engine · TX

I own a 2025 Acura MDX A-Spec purchased in XXX from John Eagle Acura in [XXX]. The vehicle has less than 10,000 miles. Component/system: The Auto Idle Stop/start system has malfunctioned. During the past week, the engine unexpectedly shut off while stopped at red lights and stop signs approximately 4–5 times. When it was supposed to restart, the vehicle sometimes failed to restart normally and required multiple attempts. The vehicle and components are available for inspection upon request. Safety risk: These incidents occurred at intersections while I was stopped in traffic. When the engine failed to restart, I was unable to immediately proceed while vehicles were behind me, creating a potential collision and traffic hazard. I regularly have my two young children in the vehicle, making this especially concerning. Dealer inspection: I brought the vehicle to John Eagle Acura after experiencing the problem. The service advisor indicated that this is a known issue, and the vehicle was serviced for the concern. The failure occurred repeatedly in real-world driving, but I do not know whether the dealer was able to reproduce it during inspection. Manufacturer/other inspection: The vehicle was inspected by an authorized Acura dealership. It has not been inspected by police or insurance representatives. Warnings/symptoms: I received no prior notification or warning from Acura regarding this issue. The first incidents occurred during the week before my dealership visit. The engine shut off while stopped and then did not restart normally. I did not observe a warning lamp or message specifically indicating that the vehicle would fail to restart. After experiencing the problem, I learned that the federal safety agency has an ongoing investigation, EA25-004, involving Auto Idle Stop failures on Honda and Acura vehicles, including 2023–2025 Acura MDX models. I am submitting this complaint so these repeated incidents can be documented as part of the federal safety agency's review. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 5

Filed Sep 15, 2026 · Electrical · NH

Auto Start/Stop At stop light car wouldn’t start after engaging Auto Start/Stop, had to turn on hazards, turn car off and restart with cars bearing down on me Monday 9/14, before entering traffic I stopped and Auto Start/Stop engaged but car wouldn’t start Got a jump and brought to dealership and they replaced starter motor

Filed Sep 12, 2026 · Electrical · TX

Battery keeps dying. Faulty starter leaving car stranded.

Filed Sep 12, 2026 · Electrical · MA

Auto start-stop system stalled my car at a red light few times. Also I can clearly tell starting/cranking it is lagging as well.