The contact owns a 2025 Honda Odyssey. The contact stated that while at a complete stop, the Auto START/STOP feature failed to restart the engine after releasing the brake pedal. The contact shifted to the park(P) and opened and closed the front driver’s side door to restart the vehicle. Additionally, during the failure the message "Check Rear Seat" was displayed. The cause of the failure was not yet determined. The local dealer was notified of the failure, and a service appointment was scheduled. The contact was notified of the federal safety agency Action Number: EA25004 (ENGINE AND ENGINE COOLING). The contact stated that the vehicle had experienced the failure listed in the investigation. The failure mileage was 20,000.
2025 Honda Odyssey engine complaints
Page 2 of 10: complaints 11 to 40 of 263, newest first, as owners wrote them.
The engine fails to restart automatically after shutting off at a complete stop (such as a red light or intersection
sometime when the engine auto stops it doesn't start again
The vehicle's Auto Idle Stop (AIS) system engaged normally when coming to a complete stop at an intersection, shutting off the engine to save fuel. However, when attempting go through the intersection after the light changed to green, the engine failed to restart automatically. The vehicle completely lost power in an active lane of traffic, creating a safety hazard. The vehicle had to be shifted into park and manually restarted to clear the roadway. This failure appears directly related to the federal safety agency Engineering Analysis EA25004 regarding Honda/Acura Auto Idle Stop restart failures.
When I come to a stop and the auto idle feature is enabled, my car sometimes fails to turn back on, and I am stuck, trying to get my car turned back on. It usually involves me completely turning off my car, opening the car door and then turning the car back on
My 2025 Honda Odyssey has repeatedly failed to restart after the Auto-Idle Stop feature automatically shut off the engine while idling in traffic. This is a serious safety hazard that could leave the vehicle disabled in a busy intersection, exposing occupants and nearby motorists to the risk of a potentially catastrophic collision. Despite two starter replacements in October 2025 and October 2026, the problem has occurred multiple times. The authorized Honda dealership acknowledged this is a known issue but stated that no permanent solution is available. No warning messages were observed before the failures. A vehicle that can unexpectedly become inoperable in traffic presents an unacceptable safety risk and warrants urgent investigation and corrective action. Please associate the above statement with EA25-004.
We have been experiencing issues with the car stalling while driving. Most recently, the car lost power a few feet into making an unprotected left turn leaving us stranded in the middle of an intersection in a vulnerable position for several minutes. This was deeply unsettling to have happen while making left turn maneuver. It seems to be a failure of the Auto Start/Stop function. After a few persistent trips to the dealer, they have now informed us that this is a known issue, but the parts are on backorder until January 2027. The workaround is turning off the Auto Start/Stop function, but this button does not have an indicator light, is not always confirmed on-screen, and is re-enabled by default EVERY time the car is started. It also appears that others have complained about this issue, and this deserves to be upgraded to a recall. It is unacceptable that a manufacturer would know about an issue with serious safety implications and not notice owners. This could have easily caused a crash and it is happening to others. This specific van is used to transport a disabled family member and outside aides often drive him in this car. We do not feel comfortable with a non-persistent workaround while others are driving this car while we wait for this part. - Auto Start/Stop and Drivetrain, available for inspection - Car stalls during maneuvers after stopping - Problem was reproduced multiple times. Dealer is aware. - Inspected by dealer. - No warnings, messages, or symptoms.
The Auto Idle Stop (AIS) on our 2025 Honda Odyssey will cause the van to stall and the engine will not restart. When this happens, our only option is to put the van in park, shut it down and then restart. Sometimes that van has not restarted for almost 90 seconds. We have had it into the Honda dealership three separate times for this issue. The first time they told us the battery was drained so they recharged for over eight hours. The last time they said "the battery fails the load test at this time" so they replaced the battery and stated that the vehicle was "operating as designed at this time." Since the last time we had it in for service (and with a brand new battery), the AIS has failed on us twice. The last time (XXX) it nearly caused an accident on a busy road in Northern Virginia. When it fails to restart the van goes into a default type mode (where most of the service lights turn on or flash and we will have to put the hazard lights on, put the van in park, shut it off and then restart the van. This issue has happened to us about 12 times int he last 8 months. I am very concerned that this will cause an accident at some point and is putting my family's safety at risk. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Engine and vehicle completely turns off when auto start/stop engages when at complete stops.
Auto Idle start stop system failed to start vehicle while. We were stopped at a red light auto idle shut down the engine once the light turn green and we attempted to move forward the auto start failed to cycle resulting in a stalled vehicle on the road, potentially increasing risk to passengers and other drivers on the road. This has happened multiple times.
When idle start activates at a stoplight sometimes the car will not start when you take your foot off the brake. Car then takes several tries but it will start again. This is a dangerous situation and can lead to accidents. Only seems to happen randomly after the car warms up. Dealer did replace the battery but it did not fix the problem. My guess is the starter does not perform correctly after heat soak in the engine bay.
I've had multiple instances where I would be stopped at a red light, when when the light turned green, the car would not accelerate. I would have to turn the engine completely off and back on. This is a safety issue as I'm sitting in traffic and cars/vehicles behind me are expecting me to go. My fear is that someone not be watching my van but the light and accelerate before I am able to move forward. My son, a mechanic, looked at the vehicle. His suggestion was to replace the battery - the vehicle was purchased March 2025, and should be too soon to have to replace the battery. However, when attempting to start it, it sounded like the battery was dying. A couple of weeks after replacing the battery, there had been no issues. I had been driving the vehicle around 20 minutes, most of that at highway speed (80MPH on the toll road). I was idling at a red light. When the light turned green, the vehicle would not come out of the idle mode. I could NOT switch from drive to park. I could NOT turn off the engine. I sat in the road for a minute and a half to 2 minutes (as I sat through an entire light cycle) before the van would finally allow me to turn off the engine and turn it back on. There was no warning, messages or other issues prior to this happening.
The auto start-stop system fails frequently. If I do not turn off the system, when I stop on red light, the engine turns off as expected. However, it frequently fails to start. The car stalls and it's difficult to turn back on. I need to turn the car off completely first, then try to turn it back on. This usually takes 10-20 seconds. The situation presents a safely hazard as I'm not able to continue to drive through an intersection on a green light. I took the car to dealer 3 times. They were not able to reproduce he issue nor find the cause of the problem
Vehicle was at a stop light and engine turned off via the automatic idle engine stop. However, when I tried to press the gas the vehicle put itself in park and flashed a battery warning. I had to restart the car 4 times before it would turn back on and drive.
Start/stop function failed. After stopping at a red light the start/stop function turned off the engine. After lifting off the brake, the engine died when attempting restart. This required turning the vehicle completely off and back on to continue driving.
There appears to be an issue with the automatic start-stop system. Occasionally, the engine will shut off at a stop light but fail to restart as expected. To get the vehicle running again, I have to turn the car off completely, wait a few seconds, and then start it back up.
I've now had multiple issues with the car shutting off during auto-idle - pull up to a traffic light and it automatically enters auto-idle. When you let off the brake, the van shuts off. Brought it to the dealer and it happened to them immediately - and the starter was replaced. I thought we were fixed, but it continues to happen (n=4) and Honda says "nothing to do, they've already replaced the starter" since they cant recreate it the day they tried. It most recently happened with my family in the car getting off the interstate and cars behind honking and approaching since we couldnt move the car quickly enough. There is no advanced warning, it just dies and the dash reboots - then indicates that you are not in park (as it tries to restart).
My vehicle completely shut off while stopped at a stop light. I have to completely turn off and restart the car. This is super dangerous!
My 2025 Honda Odyssey has experienced repeated intermittent failures of the Auto Idle Stop system. When the vehicle stopped and the engine shut off as part of the Auto Idle Stop function, the engine sometimes failed to restart automatically as expected. The problem began after approximately the first eight months of ownership and occurred multiple times before the vehicle reached 36,000 miles. I reported the issue to the Honda dealership while the vehicle was still within the original 36,000-mile basic warranty mileage limit. The dealer asked me to leave the vehicle for two to three days for diagnosis, but because the problem was intermittent, I decided to monitor it and see whether it happened again. I reported the same issue to the dealer again at approximately 37,000 miles. I was then told that I would be charged for diagnosis and repair. This failure concerns me because the engine may not restart when needed at a traffic light or other stop, potentially leaving the vehicle unable to move when traffic resumes. I do not know the underlying mechanical or electrical cause, and the problem has not yet been diagnosed or repaired. I request that this recurring Auto Idle Stop no-restart problem be investigated. Please review whether it is related to any known Honda technical issue affecting Odyssey vehicles. The issue occurred repeatedly before 36,000 miles and was reported to the dealer before that mileage was reached. I would like this safety concern documented and investigated.
Start/stop function failed. After stopping at a red light the start/stop function turned off the engine. After lifting off the brake, the engine died when attempting restart. This required turning the vehicle completely off and back on to continue driving.
My car has shutoff due to an orange system error of the idle auto stop/start system. This appears connected to EA25004. When at a traffic light, after the engine shuts off, my car occasionally fails to restart or is slow to restart when reapplying the gas. If the error occurrs, it requires me to shut off the car, restart the car, and shift into drive before I can move. This is dangerous for following vehicles in close traffic. The dealership was unable to replicate the issue and did not provide replacement parts.
The auto stop/restart failed regularly at intersections. Being stopped at intersections and having to try to restart the vehicle was not safe for us or others at the intersection. The problem was not confirmed by the dealer, but the dealer did say they've seen similar issues with similar models. There were no error messages or warning lights. The dealer has tried resolving this by charging the battery.
The auto idle stop is causing the van to not start up after stopping at red light or stop sign and it causes the van to completely go dead in middle of the road. You have to turn the van completely off, while people behind you are honking their horns at you, and then crank the van back up in order to get it to go again. All dash lights are on but the engine dies and will not start without having to shut the van off. This is very dangerous and frustrating for any vehicle to do this, but especially a 2025!!!! This happened today 10/12/2026 but has happened several times already with my family.
I would like to report two incidents involving my 2025 Honda Odyssey Touring that may be relevant to the federal safety agency Engineering Analysis EA25004, which is investigating failures of the Auto Idle Stop system to restart the engine. The investigation includes 2018-2025 Honda Odyssey vehicles and concerns allegations that the engine fails to restart after an Auto Idle Stop event. On September 27, 2026, and again on October 12, 2026, my vehicle failed to restart after the Auto Idle Stop system shut off the engine while I was stopped at a red traffic light. When I attempted to proceed by releasing the brake and pressing the accelerator, the engine did not restart as expected. In both incidents, the vehicle automatically shifted into Park and displayed a message instructing me to restart the engine manually. This left me unable to proceed in an active traffic lane and created a potential safety hazard due to surrounding traffic. Both events occurred unexpectedly and without prior warning. The condition is consistent with reports of Auto Idle Stop no-restart failures that are the subject of EA25004. I respectfully request that this information be included in the ongoing investigation. Vehicle: 2025 Honda Odyssey Touring Incident Dates: September 27, 2026 and October 12, 2026 Failure Mode: Engine failed to restart following Auto Idle Stop activation; vehicle shifted to Park and required manual restart. Safety Impact: Vehicle became immobilized in an active traffic lane.
Since XXX the engine fails to restart after Auto Idle Stop engages at a red light or stop. Vehicle shuts off. At least 10 times, ongoing. Relates to the federal safety agency EA25004. Honda case XXX open; Millennium Honda returned it Sept 22 without repair. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The vehicle's Auto Idle Stop system shuts off the engine when stopped at a red light, and the engine intermittently fails to restart when the brake pedal is released. This has happened sporadically, including twice on October 11, 2026. Each time, the vehicle was left immobilized in an active traffic lane and would not move; I had to fully turn the vehicle off and restart it to drive again. This matches the defect under the federal safety agency engineering analysis EA25-004.
Vehicle auto start/stop was turned on. Vehicle stopped at a red light, vehicle engine shut off. Upon releasing the brake pedal, vehicle engine failed to start, a series of warnings and messages flashed on the dashboard, then vehicle transmission slammed into Park, from Drive. Driver proceeded to turn the vehicle off entirely, and was able to successfully restart the vehicle and drive away. Dashcam video, which captured audio and video through windshield but not dashboard, available upon request (file size too large to submit via this form).
Vehicle: 2025 Honda Odyssey Component: Electrical System / Engine / Powertrain (Auto Idle-Stop System) Description of Incident: While driving my 2025 Honda Odyssey, the vehicle experienced a dangerous failure of the Auto Idle-Stop feature. Upon coming to a complete stop at a traffic intersection, the system engaged normally and shut off the engine to conserve fuel. However, when traffic moved and I released the brake pedal to accelerate, the vehicle failed to restart. The engine stalled completely, the vehicle remained entirely immobilized in the middle of active traffic, and the engine could not be restarted automatically by the vehicle's computer systems. To get the vehicle moving again, I had to manually shift the transmission into Park (P) and repeatedly cycle the ignition via the Engine Start/Stop button. This delay left my family and me dangerously exposed to oncoming traffic and vulnerable to a rear-end collision. Diagnostic and Repair History: The vehicle is well within its 3-year factory warranty period. I took the vehicle to an authorized Honda dealership to address this specific defect. The dealership technicians diagnosed a voltage issue and replaced the 12V battery, claiming this would resolve the problem. However, the exact same failure occurred again shortly after leaving the dealership. The battery replacement did not fix the root cause. Safety Concern: Local dealership technicians do not currently possess a viable or permanent corporate fix from Honda for this issue. This creates a severe and unpredictable safety hazard where the vehicle can randomly stall and immobilize itself at busy intersections, highway off-ramps, or left-turn lanes. Honda must issue an immediate safety alert and an official recall to replace the defective starter motor components or update the Engine Control Module (ECM) software before an injury or fatal accident occurs.
The 2025 Odyssey Elite van randomly will completely stop at stop signs and traffic lights. This happens when the Automatic Idle Stop system is activated. The van will not restart once the brake is released. Instead, we have to go through various start/stop cycles to finally restart the van. This issue has been reported by countless owners and it is time for Honda to do a recall.
Vehicle is equipped with automatic engine idle-stop (auto stop/start). On multiple occasions, when the system shuts the engine off at a stoplight or in stopped traffic, the engine fails to restart automatically when the brake pedal is released. The vehicle is left immobilized in an active traffic lane. Restarting requires shifting to park and pressing the ignition button, and even then the restart is delayed, leaving the vehicle stranded in the intersection with cross traffic approaching. This has happened repeatedly and creates a serious safety risk: a vehicle that cannot move out of an intersection can be struck by cross traffic, and occupants, including children, are exposed. No crash, fire, or injury has occurred. There were no warning lamps or messages before the failures. The component is available for inspection upon request. The vehicle has not yet been inspected by a dealer or the manufacturer for this issue. the federal safety agency is already investigating this exact failure mode in this vehicle population (engineering analysis EA25004, failure to restart after auto idle-stop).
VIN decoder
See the problems and recalls for an exact car
Buying a used 2025 Honda Odyssey?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history