general problems of the 2025 Honda Odyssey - part 1

2025 Odyssey with 19k miles; starter failure; after running/ driving vehicle continuously for 45 minutes in 80(f) degree weather, stopped and turned off vehicle completely. Tried restarting after 5 minutes, engine turned over twice, but did not start, and auxiliary features stayed on as if vehicle was running. Attempted again, heard click, as if engine attempted to turn, but no start. Checked engine visually, noticed engine bay was hot, but fluid levels all were within recommended ranges based on container-marked levels. After turning vehicle off, waiting 10 minutes and using battery jumper, engine started and stayed running. This is concerning as the vehicle features an auto-start feature that can turn off my vehicle in traffic, and leave me stranded at an intersection or worse if the starter fails.

The vehicle stalled at a traffic light and would not go into park or shut down to restart for about a minute. There were no warning signs or warning lights. It is a safety issue due to this potentially happening in the middle of an intersection while waiting to turn. The vehicle is being taken to the dealership on Wednesday, July 1st.

When I came to a stop at a traffic light, the car shut off as expected. However, when I took my foot off the brake the car did not start up. I had to manually start the car. This happened 3 times earlier so I had the car in to curtis ryan Honda for service one week prior and they claimed the battery was defective and put a new one in. However, even after the new battery, it did it again yesterday. Each time it happens, the cars behind me get anxious and start beeping. I am afraid that I may be rear ended at some point if this keeps happening. I dropped the car off at the dealer again for them to take another look at it.

When I come to a full stop and the idle stop feature engages, sometimes the engine will not restart. I get a message saying to press the button to start the engine, but it does not start after doing that either, so I have to shut the car off and restart it. There are a bunch of lights that flash when this happens.

Auto idle stop feature has caused the vehicle to stall / shut down at a stop light on several occasions causing hazard when we can't drive. Entire engine has to be stopped and restarted which is scary in heavy traffic.

While in traffic, the van goes into idle and then will not restart. This has happened to us at least 5 times. The frequency has increased and now occurs at least once a week. We are very much worried about how unsafe this is because we could be hit from any direction while in active traffic. We noticed NHTSA investigation (id# pe25-03) is already underway and feel that the issues apply to our situation. We need immediate help please.

I am reporting a critical safety issue regarding the auto-start-stop system on my 2025 Honda Odyssey. On June 15, 2026, the vehicle's engine shut off at an intersection as designed but failed to restart, stranding the driver in active traffic and presenting a severe safety hazard. I previously brought the vehicle to an authorized Honda dealership approximately two weeks prior to this incident after noticing early symptoms of this failure. At that time, the dealership diagnosed the issue as low battery voltage and replaced the battery; however, this repair did not resolve the underlying fault. The vehicle continues to unexpectedly stall during traffic stops due to the auto-start-stop failure, representing an ongoing and significant danger to the vehicle occupants and other motorists.

Vehicle shuts off with with the start/stop feature. Then will not restart the motor after taking foot off the brake causing a dead vehicle in the road with no warning. Then its a scramble to get it to restart and its difficult to start. This happens at random and seems like Honda refuses to fix.

When at a stop, the van is supposed to start again. There have been at least 4 times now that it did not automatically restart. After the 3rd time, I was at the dealer for routine maintenance and mentioned it. He said if it does it again to let them know and they will need a full day to look at it. The most recent time I was at a major intersection in town at a red light. Light turned green and the van would not go. My adult son was with me and said it took about 30 seconds for me to get the van going again. It is scary because I live in a busy town. The service advisor said he has the same van and always turns the idle stop to off when he drives. I try to remember to do it, but sometimes I forget. I am calling the dealer now but really don't want time without a vehicle.

2025 Honda Odyssey auto idle stop fails to restart engine after automatic shutdown at intersections; vehicle must be restarted manually; safety hazard; repeated occurances; video documentation made. Reference: NHTSA ea25004.

-defective starter. -starter randomly fails to restart vehicle after being warmed up. -when the DC motor internal copper windings get heat soaked after being driven and warmed up, the motor's internal resistance gets too high to draw sufficient current to turn over engine properly. This happens when intentionally shutting off motor (ie. Getting gas, going into a store then coming out in a few minutes), the engine either will not crank at all, or cranks about two engine revolutions, will not start and then stops trying and remains in full accessory mode. It will not attempt a restart either. The only remedy is to fully shut down the vehicle, then try a fresh start after a few seconds. Sometimes it will start the engine, sometimes it will repeat the issue and you have to try again. This is extremely dangerous when this problem occurs when the vehicle is at an intersection or traffic light, shuts itself off due to the auto-start/stop, then fails to restart the engine when expected when the light turns green. Especially at traffic lights if you're the first car in line. , and especially if you're the first car to go with traffic behind and in a single lane of traffic. Having to totally shut the car down, then do a fresh restart while blocking an intersection with tons of cars behind and all waiting on your car to decide if it wants to re-start with cars flying around you into the shoulder or ditch to get around is an extremely dangerous position to be in, forcing other drivers into doing ridiculous things to get around you and will if not already cause major accidents. I believe Honda knows this is an issue. They are blaming bad batteries and alternators which can easily be ruled out with independent battery and alternator testing in the vehicle, while the problem of no/slow cranking remains. The problem is defective starters, that have or will absolutely cause accidents by stranding vehicles in intersections because of failures to restart.

Sitting at a stop light. The car stopped the engine with the auto start stop system. When I released my foot off the brake. The engine didn’t start back up. I had to put it in park. Press the start button multiple times and it finally barely started. This was in traffic right while the light turned green.

Had the starter & battery replaced November 2025. It’s now June 2026 and it still is having trouble starting. It will sometimes not start and then just make a clicking noise and all the lights in the dash come on and air, but engine won’t well start. Then you take foot off break, then turn it off and try again it will start. The dealership ran tests and said everything was fine. When we first had this problem the car would stall out and shut off in traffic.

Electrical restart feature failures, battery dash indicator comes on and the restart feature won’t engage. This has happened on several occasions on busy roads with lights vehicle won’t move without manually turning off vehicle and putting into park to restart. Was almost rear ended by large truck after being unable to restart vehicle after being stopped at a red light.

Vehicle on numerous occasions has had a complete electrical failure during an auto stop that has caused the engine to turn off and needed manual reboot several times for the car to restart.

Bad starter. When utilizing auto start/stop, the engine would fail to restart at stop. The car would need to be shifted back to park, turned all the way off, and then back on to restart, resulting in a delay - an unsafe practice at an intersection.

2025 Honda Odyssey has completely shut down at a traffic light and stop signs. This has now happened multiple times. When waiting at a red light the car fails to restart the car when I take my foot off the brake and I get a message “to continue to drive depress brake pedal and push switch” . The red battery light comes on and the car puts it self in park. The car fails to turn on or turn all the way off. The car is stuck in park in the middle of traffic.

Auto idle stop (ais) system fail to restart: the engine fails to restart on its own after a complete stop at a traffic light or intersection with the auto start/stop function engaged, putting the driver in dangerous and panic situation.

Our 2025 Honda Odyssey has now experienced three failures for the same defect, including two starter replacements within two weeks, without resolution. The most recent repair, overseen by Honda tech line, happened after the vehicle died June 2 while in traffic and it had to be towed to the local dealership using our insurance. On June 15 the vehicle died again, just five days after I picked it up with assurance that this issue was resolved, and it is was towed back to the dealership by Honda towing. The repeated part swaps, without root?cause diagnosis, clearly have not resolved the issue and have left us with a one?year?old vehicle that is unreliable and unsafe to operate. My minivan has failed in the middle lane of a major road while idling at a stoplight twice and in a parking lot once. All incidents were within 15 minutes of driving and 5 miles from my home. This is a critical safety defect and the repeated failures place this vehicle within the criteria that may qualify under kentucky’s lemon law. We have not made that claim yet, but we are formally documenting the repair history and escalation. ———- -starter failed and was replaced twice. This could have something to do with the auto start/idle system. -our one year old van is unsafe and unreliable. It died near a major intersection while idling at a stop light. I was in the middle lane and it wouldn’t restart for 5 minutes. I was very afraid my children and I would be rear ended. -the dealership has confirmed the problem, but they not been able to recreate the scenario despite it happening on 3 separate occasions. -Honda tech line has been directing the local dealer what to do after the first starter replacement failed. I filed a claim with american Honda. -no warning lights/lamps prior to failures.

My vehicle has failed to restart at intersections when the idle start stop feature is engaged. Have to put car in park and manually shut off car and restart the car to get it to restart. Get an error code for a little while about brake issue.

Engine start/stop feature is not working properly and it nearly caused a few accidents. I am getting rid of this car and going to purchase a Toyota sienna. Android auto doesn't work either which is a known issue as well and it is a basic safety feature to keep driver's attention on the road and not on their phones.

While stopped at a red light the engine turned off with the engine restart function. When I released the brake the engine attempted to start and then completely stalled. I had to get the vehicle in park and restart the engine with took it a few attempts of pressing the start button. The has happened a few times with this vehicle. Dealers have been unable to replicate the issue to try to solve the problem.

The starter is failing and with automatic dial shut off it caused an issue while in middle of intersection waiting to turn. The car would not start and had issues. Took it into the dealership wyatt johnson in clarksville, TN they said they could get it to show an 8volt which is a reduction and shows that it is failing, but said Honda would not replace until it fails in the dealership. This is a safety concern an [xxx] iles [xxx] rning of more electrical issues that a safety concern the sensors go off all the time in the rain and sometimes when in reverse in an empty parking lot. The doors do not always lock like they should and these are all electrical issues. Honda refuses to replace even though it shows signs of failure! [xxx] [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The Honda auto idle stop start isn't working properly. I applied brake and car turned off, when I released the brake the vehicle did not start. Also vehicle seems hesitant to start at times.

The vehicle turned off at a red light and would not start up again.

On three separate occasions — may 17, may 20, and may 29, 2026 — the vehicle's automatic emergency braking (aeb) / collision mitigation braking system activated without cause while traveling at highway speed (one of these occasions was on an interstate). On each occasion, no vehicles, pedestrians, or obstructions were present ahead of or around the vehicle. The road was clear. The activation produced a large bright yellow dash notification and the vehicle's brakes activated. Minor children were passengers in the vehicle during these events. The vehicle has an active florida lemon law case with multiple prior documented electrical nonconformities. When I attempted to schedule yet another service appointment to have this defect diagnosed, the dealer, who sold me the vehicle, refused to service the vehicle due to the pending lemon law status and directed me to contact Honda corporate. When I asked the dealer to provide their refusal and the requirement for corporate authorization in writing, they declined to do so. Honda corporate has not responded in over 72 hours. Photo and video evidence of other nonconformities is available.

Cmbs error again now having lane assist error.

The idle stop system frequently fails to restart the car after shutting down the engine at a stop light. In some cases the car is difficult to restart using the starter button. In other instances the car restarts and then dangerously lurches forward.

We've been experiencing issues with the auto idle stop feature (the auto restart in particular). On multiple occasions, the vehicle will automatically turn off the engine while stopped in traffic, but will fail to start back up, requiring the driverto manually turn the vehicle off and back on via push button starter (sometimes multiple restarts is necessary to get it moving again). This seems very similar to the investigation referenced under - ea25004.

Auto start stop not working. This is happening quite a lot where there auto stop in activated and then the car wont start back. Resulting in the car having to be completely restarted.

Engine would not restart after the idle stop at a traffic light. I needed to put the car in park and turn the engine off and restart it. Shortly after this, at another traffic light, the idle stop caused a delayed restart of the engine and caused the vehicle to lurch forward suddenly. This has happened once before as well.

The vehicle's auto idle stop system shuts off the engine at stop lights and other low-speed stops and, on multiple occasions, fails to restart, and the ais disable button is sticking. We disable ais every single time we drive the vehicle, and on multiple occasions the button has re-engaged itself mid-drive, meaning the safety hazard cannot reliably be avoided even with the workaround Honda recommends.

The auto idle stop (ais) system malfunctions during normal driving. When coming to a stop, the ais shuts off the engine as designed, but the vehicle then fails to restart when the brake is released. The vehicle shifts itself into park automatically without driver input, either before or at the same time as a dashboard message appears instructing the driver to depress the brake pedal and press the start button. When the start button is pressed, the dash resets but the engine does not start. The only way to recover is to fully power the vehicle off and restart it, which is difficult and unsafe at a busy intersection or red light. This puts the driver and others at serious risk. The vehicle becomes immobilized in traffic with no ability to move it out of the path of oncoming or following vehicles, creating a risk of being rear-ended. The unexpected automatic shift into park is also a vehicle control concern, as the driver does not initiate it. The problem is intermittent. The vehicle has been taken to an authorized dealer twice. On the first visit the dealer kept the vehicle several days with a loaner and attempted to replicate the issue but could not. On the second visit the dealer kept the vehicle one day and again could not reproduce it. A third diagnostic visit is scheduled, during which the service manager intends to drive the vehicle to attempt replication. As of now the failure has not been confirmed or reproduced by the dealer. The vehicle is available for inspection upon request. No warning lamps appear prior to the failure. The only symptom is the automatic shift into park and the dashboard message to depress the brake and restart, which appear at the moment of the malfunction. The first occurrence was at approximately 25,000 miles. The vehicle has not been inspected by the manufacturer, police, or insurance representatives.

I have encountered several instances where the vehicle goes idle at a spot light as expected. However the vehicle fails to restart when letting off the brake. Instead, the vehicle shifts into park. Once the vehicle shifts into park, I am unable to shift into drive. I must restart the vehicle and try en shift into drive. This is extremely dangerous and has happened multiple times. This vehicle is one year old and has 9k miles.

Ais system causes the 2025 Honda Odyssey elite to stop and fail to restart when stopped at traffic light intersections—the car will not restart which is very scary in traffic with kids in the car. I had starter replaced at a Honda dealership, but the dealer could not say whether it was same part or upgraded part, which means the starter may overheat and shut down again because auto idle stop. This began happening when car was less than one year old.