2025 Honda Odyssey

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.

I am providing formal notice of a recurring defect involving my leased 2025 Honda Odyssey Sport-L and requesting prompt investigation and resolution under Honda's warranty and applicable Maryland law, including the Maryland Lemon Law. I leased the vehicle on XXX, with approximately 18 miles. It currently has 17,370 miles and has been maintained at authorized Honda dealerships. The vehicle has repeatedly failed to move from a stopped position. On XXX, Heritage Honda of Westminster documented the issue (Repair Order XXX), recording a flashing "D," inability to shift, a transmission-system warning, and Diagnostic Trouble Code P07E4. The code was cleared, but no repair was made because the problem could not be duplicated. On XXX, the defect occurred again while I was stopped at a busy intersection with my five children in the vehicle. When traffic began moving, the vehicle would not move, the dashboard went black, and the vehicle required multiple restart attempts before operating again, creating a serious safety concern. Because this defect has recurred after a documented service visit and remains unresolved, I request that Honda open a case, perform a comprehensive diagnostic evaluation and repair, provide copies of all diagnostic findings and repair records, advise me regarding a loaner vehicle, and confirm the warranty and any applicable Maryland Lemon Law remedies. Please preserve all records related to this matter. I reserve all rights available under applicable state and federal law. Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The vehicle idle start/stop feature has started struggling to reengage, particularly, it seems, in warmer weather. At least six times in the past two months (Sept-Oct 2026), the start fails completely during a drive. What this means is that the vehicle is stopped at a light and the start/stop kicks in. When I lift my foot off the brake to prepare to drive again, a warning flashes on (it disappears quickly but says something was detected) and the car shifts into park. I cannot put the vehicle into drive without turning off the car and turning it back on. This is very dangerous as I have been at the front of and in long lanes of traffic. Other drivers honk and try to go around me while I am getting the vehicle back up and running. The dealer has checked the car twice but cannot replicate the issue (both days they had the car, the temperature outside was below 80 degrees, and that seems to be a factor). Therefore, they cannot make or recommend any fixes other than turning off the feature everytime I turn on the vehicle.

My 2025 Honda Odyssey Touring has developed an intermittent malfunction involving the second-row passenger-side seatbelt buckle and warning system. The problem began at approximately 39,000 miles. The vehicle currently has 40,340 miles. The seatbelt warning system intermittently activates and produces repeated audible chimes even though the passenger's seatbelt is buckled. The warning can be triggered or interrupted by physically moving or wiggling the seatbelt buckle or latch assembly. This suggests an intermittent malfunction within the buckle assembly or its associated electrical components. I am concerned that the buckle assembly may be defective. Although the warning system is detecting a change in buckle status, I cannot determine whether the problem is limited to the electrical sensor or also affects the mechanical integrity of the buckle. This presents a potential occupant safety concern and causes repeated driver distraction due to false seatbelt warnings. I am requesting that NHTSA investigate this possible seatbelt buckle defect.

When starting the car it takes a long time to officially start. This could leave me stranded. A Honda dealer has confirmed this is an ongoing issue as well as other car shops. It started to appear a few weeks ago. I have video I can send. The auto start stop system has shut the vehicle off in the middle of an intersection which could cause an accident or me being stranded.

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

Unknown. **Vehicle:** 2025 Honda Odyssey Touring **Component:** Engine / Electrical System / Automatic Idle Stop My 2025 Honda Odyssey Touring has repeatedly failed to restart after the automatic idle-stop system shuts off the engine while stopped in traffic. This problem began very early in the vehicle's life, at approximately 10,000 miles, and has occurred an estimated 8–10 times. The vehicle currently has 40,340 miles. When the problem occurs, the engine does not crank or make any clicking sounds. Multiple attempts are required before the engine will restart. On at least one occasion, the dashboard displayed the message "Press Brake and Push Start." I cannot confirm whether this message appeared during the other incidents because I was focused on getting the vehicle restarted and moving out of traffic. The problem has occurred exclusively following activation of the automatic idle-stop system. The vehicle starts normally when initially started after being parked. This presents a serious safety concern because the vehicle becomes unexpectedly immobilized at traffic lights or intersections, potentially exposing occupants to rear-end collisions or other traffic hazards. Honda issued a dealer communication dated May 21, 2025 (NHTSA document MC-11019246-0001), specifically concerning 2023–2025 Honda Odysseys failing to restart following automatic idle-stop operation. I am requesting that NHTSA investigate this recurring safety defect.

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.

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).

The stop-start system that is supposed to idle at lights and when stopped causes the system to completely shut off. This is incredibly dangerous as I have to completely shut the car off and back on. It also eats at the battery so sometimes I have to 'start' multiple times before the engine turns over and actually starts.

At a stop light, car threw a large BRAKE warning and stalled when the foot was taken off the brake. The car then had to put in park and turned off and on again. Having a car die in the middle of traffic, even when at a stop light, is not safe. We took the car to the dealership, where they informed us the starter needed replacement. Prior to this the car has been jerky when coming out of that idle stop feature, but hasn't stalled. The BRAKE warning did flash on the screen earlier that day but the car didn't stall.

The idle stop failed to restart the vehicle on multiple occasions and killed the car in the middle of busy intersections. There is a known issue with the idle stop on late model Hondas and Zimbrick Honda said my VIN isn’t affected yet so I have to pay to have the known issue diagnosed. The problem is hard to duplicate but causes severe safety issues. I have an extended service contract and Honda is allowing unsafe vehicles to continue to operate with a known defect.

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!

The auto stop start system semi regularly stalls in the middle of traffic, shutting the van down. This requires a quick power off and restart that doesn't always succeed on the first attempt. This creates a risk of an accident, especially during busy traffic times. The dealer just told us that if it will start up eventually then the starter isn't bad, so there's nothing they can do. This is a known issue amongst Odyssey owners. The vehicle has only been inspected by the dealership. They don't acknowledge the problem, which is why I'm reporting it here. This is a common issue and nobody is doing anything about it. No warning signs. This has been occurring for several months, intermittently.

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 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.

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.

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 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 NHTSA engineering analysis EA25-004.