2025 HONDA ODYSSEY Complaints

When the vehicle is stopped, and the auto-shut off engages, the vehicle will turn off, and the vehicle has to be restarted. Quite dangerous when in traffic and the vehicle is dead due to the auto-shut off not starting again. The fix is believed to be an updated starter engine computer and starter motor.

The contact owns a 2025 Honda Odyssey. The contact stated that while driving at an undisclosed speed, the vehicle stalled. The check engine warning light was illuminated. The contact was unable to pull over to the side of the road. The contact turned on the hazard lights. The contact waited to restart the vehicle and after several attempts the vehicle restarted. The contact stated that upon depressing the brake pedal and pushing the Start button, the brake pedal was stiff while the start button made an abnormal beeping sound. The message "Press the Brake Pedal and Push the Start Button," was displayed. The contact was able to continue driving; however, the vehicle failed to accelerate as intended while depressing the accelerator pedal. The failure had occurred four times. The vehicle was taken to the dealer to be diagnosed; however, the cause of the failure could not be determined. The vehicle remained at the dealer undiagnosed and unrepaired. The contact no longer felt safe driving the vehicle and left the vehicle at the dealer. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was 18,886.

Category: Structure / Water Leak / Electrical System Risk Vehicle: 2025 Honda Odyssey Description of the Problem: My 2025 Honda Odyssey has a repeated and serious water leak issue that affects the driver-side floor area. I first discovered the leak on October 30, 2025, with the driver-side carpet and foam padding completely soaked. The dealership (Sloane Honda in Philadelphia) kept the vehicle for two days but claimed they could not find any leak. On November 19, 2025, the same leak occurred again, with even more water present under the driver-side carpet and foam. I have photos and videos showing significant water accumulation. This presents multiple safety hazards: Potential electrical short circuits in wiring under the carpet Mold growth affecting occupant health Floorboard corrosion Impaired vehicle operation The vehicle is currently back at the dealership, and Honda has not provided a proper resolution. This is a recurring structural defect that poses a safety risk and should be investigated.

The vehicle intermittently fails to restart after the auto start/stop stopped the engine. This happened several times when stopped at a traffic signal, nearly causing an accident when cars behind expected to move after the traffic signal turned green. There were no warnings or indications prior to the failure to start. Multiple attempts to restart the vehicle failed until at least a minute or so had elapsed. The vehicle has also intermittently failed to start after being parked for a few minutes after being driven for 20 minutes or so. The starter has generally sounded weak when starting, and when it fails to start it sounds like the engine tries to start turning for a fraction of a second before it stops trying to crank the engine. It almost seems like the start duration is too short or the ECU thinks the engine has successfully started when it hasn't. I brought the vehicle into the dealership to have this checked, and they replaced the battery saying it was bad. However, the failures to start continued to happen shortly after. I returned the vehicle to the dealership to be checked again. They have not yet identified anything that could be causing the issue. They claim the battery and starter test good. Based on similar complaints, it seems that this is an issue with many of these vehicles. Honda needs to identify the root cause of this failure to start issue.

COMPLAINT: 2025 HONDA ODYSSEY AUTO START/STOP SYSTEM FAILURE Component Failed: Auto start/stop system fails to restart engine after automatic shutdown. Vehicle available for inspection. Appears related to investigation INOA-EA25004-10033. Safety Risk: Vehicle has failed to restart approximately 12 times since May 2025, all at intersections with active traffic. When auto start/stop engages at stoplights and fails to restart, the vehicle remains stationary and blocks traffic lanes when lights turn green. This creates hazardous conditions where other vehicles must maneuver around a stalled vehicle in intersections, risking rear-end collisions and traffic disruptions. Dealer Confirmation: Yes. Authorized Honda dealership tested battery (good), contacted Honda customer support directly. Honda acknowledged the issue but provided no diagnostic solution or repair procedure. Dealership's only recommendation was to manually disable auto start/stop every time the vehicle is operated. This is unacceptable for a new vehicle and defeats the purpose of this factory system. Manufacturer Inspection: Authorized Honda dealership consulted with Honda customer support. No fix or remedy provided. Warning Symptoms: None. No warning lamps or dashboard messages appear before or during failure. Auto start/stop system operates normally until restart phase, then engine fails to restart. First occurrence May 2025. Problem occurs intermittently.

When’s stopping the vehicle it shut off and stall to come back on or cut off completely and when i try to restart the vehicle it take several attempts before coming back on. It happens often if i dont turn off the the auto feature

6 month old new Car stalled out at red light Took a few minutes to restart Think it had to do with idle start/stop

With vehicle auto start/stop feature enabled, vehicle just shuts off when attempting to start back up after shutting off at a stop light. It has happened multiple times and recently it even happened with the auto start/stop feature turned off. Took it to the dealership and they tested everything to include the battery and they weren’t able to duplicate it. A review of forums showed other people with the same issue and it is pointing to a faulty starter, but no recall has been issued yet.

When car is stopped it completely shuts off, goes into park and does not restart. This has happened 3 times, twice at an intersection and once as I slowed to a stop sign. The car didn’t restart and I had to push the engine start to restart the car. This was dangerously because it has happened while I stopped but also while I was slowing down at an intersection, the car would abruptly shut off. When this happens warning lights on the dash appear but go away once I restart the engine.

My 2025 Honda Odyssey has been completely shutting off after the stop-start shuts the engine off. When the car actually “stalls” is when I let off the brake and it’s time to start going. Then I hear a ding, the dash lights come on, and I have to frantically hit the ignition button to restart my car. This happens intermittently, without warning. I've been stuck at redlights afraid I will be rear ended because all of a sudden I can't move forward at a green light. My and others safety is at risk. Honda does not allow the start/stop to be disabled by default. It has to be disabled, manually, by the driver, every single time the car is restarted. So you can't just ignore this problem by shutting off the feature when the feature won't allow itself to be shut off by default.