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 the federal safety agency investigation (ID# PE25-03) is already underway and feel that the issues apply to our situation. We need immediate help please.
2025 Honda Odyssey engine complaints
Page 7 of 10: complaints 161 to 190 of 263, newest first, as owners wrote them.
My 2025 Honda Odyssey fails to restart after the Auto Idle Stop (AIS) system engages at a complete stop at traffic lights and intersections. When I release the brake, the engine does not restart as designed. I am forced to shift into Park and manually restart the vehicle using the ignition button. This has occurred multiple times and is intermittent. I am aware of the federal safety agency engineering analysis EA25004 covering this exact issue on 2018-2025 Honda Odysseys. Honda TSBs A23-008 and A23-010 have not yet been applied to my vehicle. This defect creates a safety hazard as the vehicle is unable to proceed through an intersection when traffic clears. Additionally, after driving for 20+ minutes, if I stop the vehicle and then try to restart within 5-10 minutes, the restart is very slow, almost sounding like the battery is not strong enough to turn over. I have to turn off the vehicle and then press start a couple of times to get it to work. If i then proceed for another 5 or so minutes, turn it off for just a couple of minutes and restart, it is dead with no sound on the initial restart atempt and I need to try a couple of times. You ask for a date below. This has been recurring since purchased the car in September of 2024
The van has intermittent warm-start slow cranking and occasional Auto Idle Stop restart failures. The van fails to start intermittently during auto idle stops. This puts the driver and passengers at risk by failing to drive right away. It causes a potential collision from the rear. It has not been reproducible by the dealer and was inspected by the dealer. No warnings were present prior to failure. This started happening about 2-3 months ago.
My 2025 Honda Odyssey Elite repeatedly shuts off completely while stopped, with the Auto Idle Stop feature engaged, and fails to restart on its own. The engine dies at a complete stop and will not restart until I shift the vehicle into Park and manually restart it. This has happened more than six times. It occurs only at complete stops such as traffic lights and stop signs. No warning light illuminates. This creates a safety hazard because the vehicle is dead and immovable in active traffic until I can restart it, exposing me and my passengers to rear-end collision risk. This matches the known Auto Idle Stop defect already under federal investigation for this vehicle.
When the engine shuts off while braking at a light/stop sign etc occasionally the car will fail to turn the engine back on and the car will go in to park and the only way to get in to drive is to restart the car. This happens once or twice a month.
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.
-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.
Engine fails to restart after the Auto Idle System shuts it down, leaving vehicle stranded in traffic. The issue is sudden and unpredictable, and may not appear in inspection. A stalled car in live traffic is a safety concern. The vehicle is at a dealer for diagnosis and repair. No warning appeared before the problem began happening. (About 5 times in 2.5 months.) Sometimes when it occurs, a brief error message seems to appear on the dash, but quickly disappears. It usually takes cycling through restarting the car to get going again. Not a good environment to stop and take video, although it's almost impossible to record.
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.
Engine will fail to start when shut off to stop light or when shut off at anytime when engine is hot. Very dangerous situation. Acts like starter is dragging. There is a clunking in the steering column when making a turn mainly to the left that can be felt in the steering wheel. Driver seat is splitting open on the side. Keeps setting code p0441 for evap system..
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.
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: the federal safety agency EA25004
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.
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.
Vehicle has auto start/stop and when shutting down at a stop will fail to start back up. Have to shut vehicle down completely and then try to start back up.
-Engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. -This issue presents a significant safety hazard for my two small children and me. On multiple occasions, we have been unable to move due to severe traffic congestion, leaving us vulnerable to aggressive and hostile behavior from other drivers. The resulting situation is both stressful and unsafe, particularly when traveling with young children. -Issue has happened several times -No warning lamps, messages or other symptoms of the problem prior to the failure -Reported the issue to the dealership as the vehicle is still under warranty. Per service technician, there is not alarms or issues with the vehicle. Nothing is being done by Honda to address this issue. Please help
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.
The Auto Idle Stop has failed to restart the car when stopped at a traffic light. This has happened twice now, and has caused me to become a road hazard as I am not able to get the car turned back on before the light turns green. This has happened twice in the past month (May 7 2026 and June 1 2026). Have not yet taken the car back to the dealer. No warning lights or anything came on prior to the incident. Just stopped at a light and the engine stopped, then did not turn back on when the brake pedal was lifted.
Car completely turns off when I’m stopped and idle stop has engaged. Seems to happen when the AC is running hard. Sometimes, the car turns back on by itself in seconds. Other times, I have to turn the car back on myself by pressing the “engine on” button, and I struggle to get the car to turn back on. Very dangerous to be obstructing traffic at busy intersections or on a busy highway when stopped while another car ahead is making a turn. I’m scared to drive this car with my children in it. It is a minivan! I understand this is a known issue under investigation by the federal safety agency, but I’m struggling to get my local Honda dealer to acknowledge and address it. This issue happens at least 1x a day when I’m running the AC.
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 vehicle turned off at a red light and would not start up again.
Stopped at light. Car turned off per the start/ stop feature. Removed foot from brake and pressed gas pedal, car started but brake light came on and continued to flash. Had to pull over and stop before light would stop flashing and go away.
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.
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.
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.
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.
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.
While waiting at a red light with foot on the brake, the auto idle stop system shuts off the engine but fails to restart it when the foot is lifted off the brake, causing stalling. The vehicle has to be put in park and turned off completely and restarted before it will drive. This has happened twice, once on 5/1/26 and today on 5/7/26.
When I am stopped at an intersection, my 2025 Honda Odyssey will often automatically stop the engine as part of its auto idle feature. However, three times in the last month, my car has stalled when it's time to start the engine. One time was on a highway when I was stopped at a light, and cars started honking and driving around me (including on the shoulder). Only after I turn the car off and turn it back on, can I start driving again.
While idling, the engine shuts off completely and requires the vehicle to be shifted into park and restarted before operation can continue. On multiple occasions, the engine has struggled to restart and cranked for several seconds before turning over. Honda of Tomball in Tomball, TX currently has it. This defect creates a significant safety hazard because the vehicle loses power unexpectedly while in traffic. The vehicle is immobilized until it can be shifted into Park and restarted, leaving us vulnerable to collisions or other accidents, particularly in busy intersections or congested roadways, and creates a serious safety risk to our family, children, and our daughter’s service dog. The vehicle has been presented to HOT multiple times for diagnosis and repair. This defect continues to happen. HOT has inspected this during multiple repair visits. To our knowledge, the manufacturer has not directly inspected the vehicle. (I have requested it with both Honda of Tomball and Honda of America.) No warning lamps or dashboard messages appeared prior to the stalling events. The failure occurs without warning while the vehicle is stopped in Drive. The primary symptom is sudden engine shutdown, followed by difficulty restarting in some instances. This issue began shortly after delivery of the vehicle and has continued intermittently. First documented time of problem was September 2025. Most recent is May 2026.
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