2025 Honda Odyssey Driver assistance Problems

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.

NHTSA ID

11746676

Incident

Mar 20, 2026

While driving straight on the highway on a sunny day the car left the lane on it's own, resisted attempts to get it back into the lane, and crashed into the concrete barrier after we swerved around and the car bounced around. Lane keeping assistance and automatic cruise control were active. The lane lines looked perfectly fine. A couple minutes before the accident the car left the lane unexpectedly but we were able to get back into it. Before going on the trip we took the car to the dealer and complained about issues with the car not starting after it shut off while idle at stop lights, or not starting properly, like engaging the parking brake and getting stuck, or starting and rocketing forward even when I only pressed lightly on the gas, leading to loss of traction. They checked the car and said everything looks fine and the tires have 5mm of tread and don't need to be replaced, and they rotated the tires and changed the engine oil. I'm not sure if the issue was with the power steering failing, or traction being lost, or the sensors having an issue causing the car to think the lane was somewhere else and not letting us leave where it thought the lane was. Driver has tons of bruises still and it's been over a week. The other 4 passengers seem ok. The insurance company said the car is totaled and is taking possession of the car. The only warnings lights or messages the car gave us before the accident were about the car having an issue starting back up when all the cars were beeping behind us when the light turned green, and messages about loss of traction, mainly after the engine started back up.

NHTSA ID

11744403

Incident

Jun 7, 2026

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.

NHTSA ID

11741635

Incident

May 17, 2026

CMBS error again now having lane assist error

NHTSA ID

11737710

Incident

May 11, 2026

I was driving on the street about 15 miles per hour when the car sensor sensed something in front of my car and stopped automatically when there was nothing in front of me. Almost caused a rear-end accident, luckily, the car behind was able to stop

NHTSA ID

11735969

Incident

May 5, 2026

The Auto Idle Stop system on my 2025 Honda Odyssey fails to restart the engine when the brake pedal is released quickly after a full stop. When this occurs, the vehicle stalls completely in traffic and must be manually restarted by the driver. This has happened multiple times and is reproducible. The failed component is the Auto Idle Stop/engine restart system. The vehicle is available for inspection. My safety and the safety of others has been put at risk multiple times because the vehicle stalled at traffic lights in active traffic, leaving me unable to accelerate through an intersection. The problem has been confirmed by Honda Marysville dealership. The dealer stated they could not repair the issue and advised me to modify my driving behavior as a workaround. No repair was performed. The vehicle has been inspected by the selling dealership. A message appears during the failure telling me to restart the car. The problem first appeared within the first year of ownership on a brand new vehicle with basically zero miles at purchase. The cause appears to be a defect in the Auto Idle Stop restart system that fails under specific braking conditions.

NHTSA ID

11728735

Incident

Jun 9, 2025

I see the NHTSA is aware of the issue with Honda Odyssey AutoStart failing to restart the engine which causes the car to need to be restarted fully while stopped in the middle of traffic. I had this issue many times, my car was serviced with a new battery and 2 months laters its starting again. As an aside one of the front parking sensors will randomly go off which can often cause me to turn off the array. Cleaning didnt help.

NHTSA ID

11720903

Incident

Feb 2, 2026

With adaptive cruise control engaged and set on any of the four options, my odyssey’s speed slows down for a short time period then speeds up again as I approach the vehicle I intend to pass. This happens when my odyssey is about a car length behind the vehicle I intend to pass. This happens when I’m passing a vehicle on the left or right side. This doesn’t happen every time I pass a vehicle with adaptive cruse control engaged. I had this odyssey in a Honda dealership shop today, February 26, 2026, to hopefully fix this issue. I can’t confirm this but was told by the service agent at the dealership that when this happens, the brake lights will turn on. The fix the dealership service recommended was to set the adaptive cruse control to the minimum following distance setting. I’m going to quote the service technician’s written comment word for word. “Have found this to be a pretty normal symptom of the adaptive cruse system.” I take that as meaning, the service technician has seen this before and it is normal for this vehicle. If this is “normal”, there is a major safety issue with this odyssey. On the way home from the appointment at the dealership service department I had the adaptive cruse control at it’s closest following setting. I passed a vehicle on the left and this issue happened again. When I got home, I called the service manager and told him my odyssey did have the same issue of slowing down even though the adaptive cruse control was set to the closest following distance setting. One more thing to note, the service technician did take my odyssey for a test drive and did experience and there for confirm the above stated issue with the vehicle slowing down. I did speak with the service manager at the Honda dealership about this issue. He was unaware of any other vehicle with this issue and said he would check into it and get back to me. I purchased this odyssey new on January 16, 2025. This problem existed since the day I have owned it.

NHTSA ID

11720825

Incident

Jan 16, 2025

Since purchasing this vehicle brand new off the truck, we have had it back at the dealership multiple times ,we've taken it for the plug in console not working for firesticks, a sensor not working on the passenger side door and claiming it to be open, the sliding door not working correctly, the doors locking and refusing to unlock, battery draining, ac not working, stalling, dying at lights, slamming on its own brakes with nothing around, transmission acting weird, it putting itself in to sport mode, transmission sticking, doors not unlocking or not locking, sensors going off, random errors on dash, screens not working, Car play not working, suspension popping, steering being wiggly and loose, brakes squeeling. Today we were told by the dealership "he saw the damage that is resulting in needing to replace the steering column. With that being said, it is considered a safety hazard to drive this vehicle with the condition the steering column is in." This is after multiple times of saying nothing is wrong to we have to charge the battery to you need a new starter to this.

NHTSA ID

11712818

Incident

Jan 22, 2026

The CMBS braking system is completely faulty. It regularly brakes for shadows on the ground, going up hills, or for no reason at all. There have been SEVERAL near misses where cars behind me have almost rear ended me because of this cars erratic braking. I have a neck injury from this most recent episode of the car slamming the brakes for no reason.

NHTSA ID

11712100

Incident

Jan 20, 2026

The contact owns a 2025 Honda Odyssey. The contact stated that while stopped at a traffic light, the contact released the brake pedal and depressed the accelerator pedal; however, the vehicle failed to respond. The contact believed that the failure was related to the gas saving feature. The vehicle then stalled, but was able to be restarted. The vehicle was not taken to a dealer or independent mechanic to be diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 11,390.

NHTSA ID

11709772

Incident

Jan 8, 2026

Mileage

11,390 mi

Blind Spot Monitoring System does not register vehicles sometimes. Sometimes when passing a vehicle, light does not illuminate. Sometimes cars will pass the vehicle and light does not illuminate.

NHTSA ID

11701806

Incident

Nov 3, 2025

Honda Odyssey EX-L sport 2025 has been facing the issue of idle stop not working causing engine to stall, engine failing to restart, shutting off completely during mid traffic especially during adaptive cruise control operation. This is causing an unsafe driving situation. While this issue was reported to Scott Clark Honda multiple times and they have claimed to fix this issue in Aug 2025, the issue continues to exist and root cause hasn't been fixed. This seems to be related towards the on-going investigation by NHTSA. Please help to resolve at the earliest since no further support is being received from Honda.

NHTSA ID

11694397

Incident

Oct 18, 2025

If the car is standing in sun on a very hot day, upon starting the engine it will start beeping with all these errors blinking and disabling these controls. Once the engine runs for 15,20 minutes and the car cools down, the warnings disappear too.

NHTSA ID

11692244

Incident

Jun 10, 2025

Vehicle shut off and put itself in park leaving a stop light. Was hard to restart.

NHTSA ID

11688971

Incident

Sep 22, 2025

My wife was driving our 2025 Honda Odyssey on [XXX] on a neighborhood road around [XXX]. She came to a stop sign and stopped to turn right. Upon accelerating to turn right, the emergency braking system activated slamming on the brakes and bringing the vehicle to an immediate stop. There were no other cars, pedestrians or other obstacles with any line of sight. The sudden stop caused her to whiplash hurting her shoulder. We brought the vehicle to Joyce Koons Honda of Manassas. They downloaded the data and confirmed that the emergency braking system had activated but there were no reason codes given. They couldn't find any other issue and test drove the vehicle for 10 miles with no incident. My wife was really shaken up by the incident and refuses to drive the car until an actual cause is found and fixed. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11687600

Incident

Sep 12, 2025

Van completely shut down while in an intersection and the battery light came on. It was hard to restart. Took it to the dealership and they cannot find the problem.

NHTSA ID

11683917

Incident

Aug 27, 2025

We get a warning light saying "Adaptive Cruise Control System Problem". Van has 4200 miles and it happens during hot days, usually at lunch time. I took it to dealer "Honda Cars of Rock Hill, SC" but they told me there is no code showing up in the Van. I emailed honda America with video but so far no response. The system just goes crazy, beeping and the cruise control is no responsive to cancel button or anything. We are not even using the adaptive cruise control when this happens. After you drive for a while, it goes away, like nothing happened. But when another hot summer day comes, around lunch time, it goes... it does it pretty much during high temps. never in the evening or night time. here is link to YouTube video I sent to Honda: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11677153

Incident

Jun 20, 2025

While driving approximately 40 mph, the vehicles emergency avoidance system activated and applied the brakes very heavily. We were nearly hit by a vehicle behind us, which nearly caused multiple accidents. There was nothing in front of us, and the road was co.pletely clear in front of us.

NHTSA ID

11675281

Incident

Jul 22, 2025

While driving in a construction zone, the vehicle's lane departure system jerked the wheel and almost made me leave the lane Very dangerous. Same vehicle, the A'C was found not operating and a dealer diagnosis found that the system was overfilled and that an electrical connection was not hooked up from the factory. Same vehicle, body panels are not properly aligned from the sliding door to the passenger side door, gap is almost 1/2 inch.

NHTSA ID

11649433

Incident

Mar 13, 2025