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.
2025 Honda Odyssey electrical complaints
Page 2 of 9: complaints 11 to 40 of 243, newest first, as owners wrote them.
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)
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.
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.
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 (the federal safety agency document MC-11019246-0001), specifically concerning 2023–2025 Honda Odysseys failing to restart following automatic idle-stop operation. I am requesting that the federal safety agency investigate this recurring safety defect.
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
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.
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).
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.
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.
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.
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.
At 10 AM on Saturday, October 10, 2026, I experienced an issue with my 2025 Odyssey Touring while stopped at a traffic light waiting to turn left. The auto start-stop feature failed after around 1-2 minutes when I was about to go forward. The car was automatically put in accessory mode and I had to power cycle the car (park, turn off, restart) in the middle of a green turn. Had hazards on. Thankfully, I got it restarted before the next green but this is not acceptable. Serious safety issue. I am concerned this will happen again, so this feature will stay disabled until addressed by Honda.
I purchased a brand-new 2025 Honda Odyssey in June 2024. The vehicle currently has approximately 18,000 miles. The Auto Idle Stop system has repeatedly shut the engine off at traffic lights and failed to restart it. When this occurs, the engine does not crank, the dashboard remains illuminated, the radio and other accessories shut down, and the display instructs the driver to press the brake to start the engine. Pressing the brake and attempting to restart the vehicle does not work. The vehicle may remain disabled for several minutes before eventually restarting normally. This has happened multiple times. The vehicle has been taken to Honda dealerships twice specifically for this problem, but the technicians have been unable to duplicate the failure. On a separate oil-change visit, the battery tested low and was replaced. The restart failures have continued. Approximately two months ago, my wife experienced this failure while stopped at a traffic light. While the Odyssey was immobilized and unable to restart, a motorcycle struck the rear of the vehicle and fled the scene. The vehicle sustained damage. No police report was filed at the time. I am extremely concerned that this intermittent failure creates a serious safety hazard for my family and other motorists. I request that the federal safety agency investigate this recurring failure, including its potential connection to previously reported Honda Auto Idle Stop restart problems.
Auto Idle Stop feature wouldn't restart vehicle while at an intersection. The vehicle eventually restarted, but not without causing traffic disruption. It took the entire light cycle(red-> green -> red) for my wife to be able to manually(had to push the start button several times) for the car to eventually restart. Warning light on dash said something to the effect of "unable to engage "something"(wife cannot remember, she was panicking due to being stalled in the middle of the road) This not the firs time this has happened, and we have had it in for this before but the the dealership has not been able to find any issue to date. Honda factory also is aware of the issue(maybe for over a year now, but still has not found a fix)
My 2025 Honda Odyssey Elite has recurring, intermittent difficulty restarting after the Auto Idle Stop system shuts the engine off at a stop. I purchased the vehicle in December 2024, and it currently has approximately 37,000 miles. When attempting to restart, the engine sounds as though it is struggling to turn over. Most of the time it eventually restarts automatically, but on some occasions it fails to restart automatically and I must use the ENGINE START/STOP button. An intermittent dashboard message sometimes appears during these events but disappears before I can read it. The problem occurs even after long drives and sometimes appears worse after a long drive. The vehicle has also struggled to restart using the push button after being parked for approximately one to five minutes following driving. It typically starts normally otherwise. A Honda dealership previously replaced the starter to address this problem. The vehicle improved for a period after that repair, but the symptoms have returned. The underlying cause of the recurring problem has not been confirmed. Failure to restart after an automatic engine shutdown leaves the vehicle unable to proceed from a stop until the engine restarts, creating a risk of a collision in traffic. The problem remains unresolved. Please consider this report in connection with the federal safety agency investigation EA25004 concerning failure to restart after Auto Idle Stop.
My car has stalled numerous times when it stops, and the engine goes into the fuel saving off mode. It stalls when I try to drive away as my foot comes off the brake. This has happened more times than I can count. In addition, as a side not I rented another 2025 Honda odyssey, and it also died when trying to go. The dealer has supposedly driven my vehicle when we bring it in but never has reproduced it according to them. They did admit that they knew about it but had no solution at present. There only response was to say to turn the engine shut off switch to disable it. There are warning lights after it dies but not before.
Several (more than 5) times over the past 2 months my car has had the same issue occur. The automatic Idle Stop feature was turned on and the engine was idling at a stop sign or red light. When I went to press on the gas to begin driving again, my engine would not restart and I received an error message. I was unable to change gears and had to manually turn off my engine, wait a few seconds and restart the engine, and then put back into drive. Again, this has happened several times over the past couple months. My safety was at risk because I was at risk of beging in an accident if the car behind me started to drive when the light turned green, not realizing I was stuck with an engine in idle mode, unable to drive my car.
Vehicle intermittently failed to start. On one occasion following an Auto Idle Stop event, the restart was difficult (details in the "additional details" field). The vehicle did not restart as intended after disengaging the brake from Auto Idle Stop and manually restarted causing a several second delay in the roadway. On another occasion, after filling for gas, the engine cranked normally but did not start on the first attempt and started normally on the second attempt. Honda dealer diagnosed a defective starter and is replacing under warranty. Replacement starter is currently on national back order. Vehicle is included in the federal safety agency's active investigation (EA25004) regarding Odyssey starting/no-restart issues. General Guidelines responses: What component or system failed or malfunctioned, and is it available for inspection upon request? -Starter, available upon request until replaced by dealer How was your safety or the safety of others put at risk? -The delay in the roadway could have caused an accident (to me and others) when the vehicle failed to start as intended after the brake was disengaged Has the problem been reproduced or confirmed by a dealer or independent service center? -Dealer has confirmed there is an issue with the starter and will be replacing it under warranty when it is available from back order Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? -Only the dealer Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? -No prior warning. However, the vehicle does sound "rougher" when it cranks as opposed to my other vehicle now that I'm comparing the two. Restart issues first occurred within the last week.
Engine won't start. This problem began as intermittent no start after driving for more than 30 minutes in hot weather. Such as stopping for fuel or a roadside rest on the interstate. It has progressed to intermittent no start in the mornings, or after work. Or after short drives for errands. Vehicle has been evaluated by the Honda Service Center. They stated they couldn't reproduce the problem, but it is a known problem. They also stated that there isn't any parts available. And there won't be any parts available until January 2027 or later. I asked what's my options, this car isn't reliable and it's going to leave my family stranded. The service center told us to not use AIS (Auto idle stop) We haven't used it since we bought it. No loaner, rental or other options. No replacement parts for 5-6 months isn't acceptable. This vehicle only has 20,000 miles and is 18 months old
The Auto Idle Stop (AIS) failed to work properly for my wife when she was stopped at a stoplight. When she stopped at a stoplight the engine stopped. When she took her foot off the break and applied pressure on the gas pedal a warning of some sort showed on the screen where the speedometer is and the car failed to restart and move forward. This caused a hazard because the people behind her lurched forward because they assumed she would move forward once the light turned green. When our car failed to start she wasn't sure what to do to fix the problem so all the cars backed up behind her for a short time before she realized she needed to put our car in park, turn it off and then restart the engine. I will take my car in to the dealer as soon as possible. Until then we will have to disengage the auto stop function so prevent any further dangerous incidents.
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