auto idle stop/start system malfunctions intermittently. The car will shut off at a red light/stop sign then will not automatically restart. Will require shifting to park and restarting the car at the intersection.
2025 Honda Odyssey engine complaints
Page 6 of 10: complaints 131 to 160 of 263, newest first, as owners wrote them.
When stopped at a red light today, our minivan's Auto Idle Stop (AIS) system stopped the engine with the brakes depressed (as advertised). Once the light turned green, the driver released the brake to re-engage the motor, but the starter did no restart the minivan and a battery light flashed on. The start button had to be pressed several (~4) times to get the motor to restart and to turn the battery light off.
This has been addressed by the dealer once before and the starter was replaced, however the problem is happening again. The auto start/idle feature will not start the car back up while stopped on occasion. For instance, yesterday while stopped at a red light the auto idle/start feature kicked in, as expected. When releasing the brake to drive when the light turned green the car beeped and would not start again. We had to power the whole van down at a busy intersection and restart. Thankfully it started. We didn’t catch what warning lights flashed when the van beeped, but no warning lights were present before the issue. As mentioned, this has happened before to the point the dealership replaced the starter. But unfortunately, it is happening again. The van often has a rough start as well when using it, but not every time.
The vehicle experiences dangerous, unexpected engine stalling immediately following an Auto Idle Stop event. Upon coming to a complete stop at intersections, the engine shuts off as designed, but fails to automatically restart when the brake pedal is released. The vehicle completely locks up, leaving my family stranded in live traffic and requiring a manual reset of the ignition, which takes time to restart several minutes or longer. The local Honda dealership states they cannot duplicate the intermittent issue, posing a severe ongoing safety hazard. Honda has a ticket open for the year of my Honda but has yet to approve or make a fix. It's happened several times first notice it back on XXX and Honda dealer could not duplicate the issue so they did nothing. It has happened several additional times before now but this last time it happened XXX we were on a highway at night and it almost caused us to be rear-ended. The first times it happened back in XXX I sent them a photo of the dashboard light up when it was stalled, but they said they couldn't duplicate the issue and did not fix anything. This was all done through First Texas Honda in [XXX], which is where the vehicle is at now. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
I bought a brandnew vehicle 1/31/2025 and it was a White Honda Odyssey 2025. I was in search of a bigger and safer car for my family of 5. Within months I had major issues with the vehicle. I would bring my car in and it would get returned unfixed. My vehicle has now gone in for a 6th time (twice in a week) for service for shutting off while the vehicle was IN MOTION (on the highway , busy rotary and roads) I have spent hours and hours and hours speaking to people and James Brown at Parkway Honda. I have been lied to about how much my vehicle was driven and tested with them not knowing I had tracked the mileage on there at dropoff and checked at pickup. I feel very small in this situation as Parkway Honda keeps brushing me off and not fully getting that a vehicle shutting off while in motion on a highway or in a busy rotary is wildly unsafe. My kids and I have been SOO lucky that this has not been fatal. Honda keeps saying it's the battery, etc. My car was in there for over 3 weeks last Summer for this issue and has been in and out multiple times and it was brand new. This is criminal on their part and they know they are bigger than I am and im sick of it.
My vehicle has experienced repeated unexpected engine shutdown/no-start events, creating a significant safety hazard. The engine has unexpectedly shut off or failed to restart while stopped in traffic and while entering traffic, resulting in a sudden loss of propulsion. On one occasion, the vehicle would not restart for approximately one minute. The vehicle was inspected by an authorized Honda dealership, and the starter was replaced under warranty in July 2025. The repair did not correct the problem. Since that repair, the same failure has occurred multiple additional times. The issue has now occurred at least six times over approximately one year. Because the condition is intermittent, the dealership has not permanently identified the root cause. The vehicle is currently being returned to the dealership for further diagnosis, and I have requested that the matter be escalated to Honda Technical Assistance (Tech Line) and Honda Engineering. This defect creates a serious safety concern because the vehicle can unexpectedly lose power while in or entering traffic, increasing the risk of a collision. There were no consistent warning lights or messages before the failures, and the condition occurs intermittently without warning. The vehicle remains available for inspection.
The contact owns a 2025 Honda Odyssey. The contact stated that while stopped at a red light, the message "Severe Damage Alert" was displayed on the instrument panel. The accelerator pedal was depressed and the auto idle stop feature engaged, and the vehicle stalled. The failure had occurred on several occasions. A dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.
The idle restart does not always restart the car following an automatic idle engine shutdown. The result is that the car is stalled at an intersection or other areas where the brake is applied, the engine shuts off, but the car is still in drive. Only fix found is to shut off the car systems and hit the ignition to get the car started again.
There is an idle function on the engine that shuts the engine off when at rest, the engine has failed to restart and the car dies in the middle of the street, without warning, as if the battery is dead. The handful of times this has happened the car has been able to start back up within two or three tries. Honda acknowledges the issue as far as I know. The dealership let me know this is a known issue. It is unacceptable that there is no fix to this problem.
Stopped in heavy traffic in a four lane highway. Auto start/stop shut the engine down as expected. Traffic ahead cleared. I took my foot off of the brake to step on the gas. The engine didn't start up, and the radio and all lights inside went blank. Traffic behind me approached at about 45 mph. and were swerving around to avoid hitting my dead vehicle from the rear. I pushed the start button. Nothing. Again. Nothing. Several times more with my foot on the brake, or off the brake. Nothing. I put it in park and kept trying the start button. Finally it started, the radio and dash display came on, and from then on it operated as usual. Scared the hell out of us. There was no warning that anything in the car was malfunctioning before this happened. Took it to the dealer. They looked it over, kept it overnight. Told me the next day that the battery can get drained too much if the air/cond is on max and the start/stop feature doesn't like that. They used a machine to drain the battery and recharge it and they tell me now that it should be good. I don't believe one has to be aware not to use the air on max while the start/stop is enabled. I'm afraid to drive the car now! Our lives were in danger.
The vehicle suffers from an intermittent electrical/charging and starting system failure tied to the Auto Idle-Stop feature. While driving and coming to a stop at active traffic lights, the engine stutters and completely shuts down. It then fails to automatically restart, requiring multiple manual attempts to crank the engine back over. This creates a severe safety hazard, leaving my family suddenly stranded and vulnerable to being rear-ended in live traffic. The vehicle also intermittently struggles or takes multiple attempts to start after being parked in lots. The issue has been brought to two separate authorized Honda dealerships within a 30-day window. The first dealership diagnosed a failed battery and replaced it under warranty, but the stalling recurred. The second dealership held the vehicle for five days for diagnostic testing but stated they could not replicate the defect, returning it with no repairs made. Immediately upon picking the vehicle up from the second dealer, it suffered another starting failure in a parking lot. No warning lamps or error messages appeared on the dashboard prior to these failures. The components are intact on the vehicle and available for inspection upon request.
1st concern- while in an intersection the van powered off after lights on dashboard said something about a system failure. I tried restarting vehicle several times as I was really nervous being in an intersection and it finally started after a few tries. This same thing happened l, to my husband, while parked in our garage about to leave. 2 nd concern- last week on XXXI drove to [XXX] for a short vacation and while at a stop the dashboard had multiple warnings going off 1) electrical power steering system problem 2) Hill start assist problem. Vehicle may roll upon brake release 3) adaptive cruise control problem 4);power steering system problem. I called Roadside assistance and we waited about an hour and a half. He used a tester and said all was coming back fine but to take van to a dealer the next day. We took it to Egg Harbor Honda dealership and they said if the codes have cleared, which they had, then there is nothing they can do and to just take it to our dealer when we return home. I have an appointment for tomorrow at XXX at 915 am at [XXX] of Honda in Abington, PA. I have pictures of all the "2nd concern" warnings. During the 1st concern I was driving and did not feel comfortable capturing the warning lights with my phone camera. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
When stopped at a stop light, the car went into idle stop. Upon taking my foot off the brake to accelerate, the car stalled and required me to push the brake and ignition button to shut it off completely and then restart the car. This has happened on 8 separate occasions. It seems to happen more frequently when we have the AC on on a hot day. It's scary to be at a light with cars waiting to go around you sometimes in the middle of a busy road and your car just stops. I feel anxious when driving on the highway that the car will just stop, though I think that is unlikely given how this happens. We have gotten into the habit of turning off the automatic idle stop feature when we drive and that gets around it, but you have to shut this off every time you start the car, so we forget sometimes. No warning lights before the failures occur nor after. We are going to visit the dealership, but this is a known issue that is already under investigation and so I am just adding our report to the pile of others as additional evidence.
Engine Idle Stop shuts off engine at stops but completely fails to restart when the brake is released. The vehicle stalls in traffic and requires a manual restart. This has happened four times from a stop, and once while driving on the highway.
On multiple occasions, after the engine auto start/stop has turned the engine off at a stop, the engine fails to restart. This leaves the car stalled in the roadway. This has led to multiple unsafe situations as traffic flow is disrupted must divert around the stalled car in the middle of the roadway. There have been no other warning signs or symptoms leading up to this issue. The vehicle has not yet been inspected, a inspection at a Honda service center is scheduled for next week
Once the vehicle's auto idle stop system engaged at a traffic light, and the engine failed to restart automatically leaving us stranded in active traffic. We usually disable the system but forgot that time. It has also required multiple manual push-button attempts to start from a parked position at home and in public parking lots. The vehicle was brought to an authorized Honda dealership for this issue. The dealer stated they could not replicate the symptom, diagnosed it as a low battery, and charged the battery. The issue persists. Failing to restart at a traffic light creates an immediate rear-end collision hazard and leaves occupants vulnerable in the middle of active intersections.
The malfunction involves the Auto Idle Stop / Auto Start-Stop restart system on my 2025 Honda Odyssey, including related battery, charging, starter, starter relay, brake switch, and Power Distribution Module components. The vehicle is available for inspection upon request. The vehicle has shut off while stopped in traffic, usually at a red light, and failed to restart normally. This has happened four separate times. This puts my safety and the safety of others at risk because the vehicle can become disabled in an active traffic lane or intersection, creating a rear-end collision hazard and blocking traffic. I took the vehicle to Hill Country Honda in San Antonio, Texas. I told the dealership the vehicle had stopped and failed to restart normally multiple times, and I provided video and pictures to the service advisor. The dealership stated the battery had run down because of the Auto Idle Stop system and charged the battery for approximately two hours. I was also told that if it happens again, the procedure may be to charge the battery again before moving forward with further diagnosis or repair. As far as I know, the dealer has not reproduced the failure while in possession of the vehicle. However, they were made aware of the repeated failures and reviewed the video/pictures I provided. I do not know whether American Honda has inspected the vehicle. It has not been inspected by police or insurance representatives. Warning messages appeared during the failure, including “System problem detected. Shift to Park” and “To continue to drive, depress brake pedal and push switch.” These appeared when the Auto Idle Stop system had shut the engine off and the vehicle did not restart normally. I had no clear warning before the first incident.
I was waiting at a stop light. The idle system kicked and the vehicle turned off, as expected. Upon lifting my foot off the brake, the vehicle failed to start and the car went into park. I was unable to restart the car after holding the brake pedal down and pressing the start button multiple times. After many failed attempts, I shut off the power to the vehicle, waited a min or so and restarted the vehicle. I then put the car in drive and continued thru the intersection. This was in a busy intersection and could have easily caused an accident, but thankfully it did not. This is the 3 time this has occurred with this vehicle.
The vehicle has an Auto Idle Stop no-restart/stalling issue. While stopped at a traffic light/intersection, Auto Idle Stop engaged. When attempting to proceed, the vehicle did not resume driving normally, shifted itself into Park, dashboard warning lights flashed, and the only way to move again was to turn the vehicle completely off and restart it. This left the vehicle disabled in traffic and created a serious rear-end collision/intersection hazard. The issue was confirmed by a Honda dealer on 06/26/2026 at approximately 11,804 miles. The repair order states that code P07AF was stored and that a snapshot showed a drop in cranking voltage due to a failing starter. The dealer advised that the starter must be replaced, but stated the starter is on severe backorder. The vehicle remains unrepaired. Honda customer service case #16464445. The vehicle is a low-mileage 2025 Honda Odyssey purchased new in April 2025 and used as a family vehicle to transport children. Prior Honda service records show maintenance was performed at approximately 9,800 miles, including a multi-point inspection, and the battery terminals/cables/mountings and battery condition were checked OK at that time. This appears related to the federal safety agency Engineering Analysis EA25004, “No Restart After Auto Start/Stop Engages,” involving 2018–2025 Honda Odyssey vehicles. The failed starter/vehicle is available for inspection upon request.
While the start stop feature is active, there have been several times where the van will not restart at a stoplight. In some cases, I have had to turn off the A/C, or other electrical systems to allow the car to restart. This has happened in traffic and caused several backups while I tried to restart the car. Took this van to the dealer and while they checked the systems they did not find any issued. As we progress through summer and into fall/winter, I do not want to have to worry about this in poor weather.
I have been in my vehicle at a red light and my van will not start. The start button is pressed and the vehicle makes clicking noises or won’t make a sound at all. Finally it starts
With the auto start engaged, the car has stalled several times in the middle of intersections with my family in the car. Over the course of 12 months, this has happened 5-6 times. In each case, we have to shut the car off and try to frantically turn it back on. Sometimes this takes a few tries to get it to start. It’s frustrating that there is no option to permanently turn off the auto start feature. However, within the past 2 months, there have been 3 times that the car won’t start right away from an off position. It takes a few tries to get the engine started. The van is less than a year and a half old and only has 18,000 miles on it. This shouldn’t be happening, particularly in the middle of an intersection if I forget to turn the auto start off. Honda has not replied to my inquiries and the dealership can’t/won’t do anything about it because they can’t replicate this issue.
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.
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.
My 2025 Honda Odyssey has experienced an intermittent failure of the Auto Idle Stop system on four separate occasions. While stopped at a traffic light, the Auto Idle Stop system shuts the engine off as designed. When I release the brake pedal to proceed after the light turns green, the engine fails to restart automatically. Instead, the dashboard lights illuminate and flash, and the vehicle displays the message "Press brake and START button." Pressing the START button once does not restart the engine. I have had to repeatedly press or hold the START button before the vehicle eventually restarts. During these events, the vehicle is completely disabled in active traffic and cannot be driven until it restarts. This has occurred four times, including while stopped at busy multi-lane intersections. The vehicle remained stationary after the traffic signal turned green while surrounding traffic expected it to move. This created a safety hazard because the vehicle unexpectedly became immobilized in an active traffic lane. I took the vehicle to an authorized Honda dealership. The service advisor acknowledged they are aware of similar complaints from other 2025 Odyssey owners but indicated Honda has not provided a definitive repair or service procedure. A diagnostic appointment has been scheduled. I have also found numerous reports from other 2025 Honda Odyssey owners describing the same Auto Idle Stop failure. In many of those cases, dealerships ultimately replaced the starter under warranty after diagnosis. The consistency of these reports suggests this may not be an isolated incident. I am submitting this complaint because this is a safety issue. A vehicle that unexpectedly cannot move when traffic begins to flow creates a risk of a rear-end or other collision.
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.
while stopped at a redlight the auto idle stop engaged and engine shut off. When releasing the brake to accelerate the engine failed to restart and completely stalled in traffic requiring a manual restart. warning lights flashed on the dashboard. Then the same thing happend when stopped at a stopped sign.
Van has repeatedly stalled during the idle stop restart process when stopped at a stoplight. The van will stall and the dashboard lights up with many symbols. To briefly include, a red exclamation, check engine and battery symbol among others. The car has to be completely shut down and restarted to turn over and function. Obviously an unexpected stalled vehicle in traffic is a significant and potentially injurious or deadly problem. This has been happening periodically since Jan 2026 on a 1 year old van with approximately 12k miles. I have asked the dealer to investigate and they claim no error codes and the battery is ok. I suspect either a starter, brake pedal issues, or software update is needed. I would encourage the federal safety agency to issue a recall or service bulletin as a quick google search reveals this is a common issue on newer Odyssey vans. This vehicle is available for inspection upon request.
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.
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.
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