2025 Honda Odyssey

On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to restart on its own from a complete stop at a traffic light or road intersection with the AIS function engaged. The subject vehicles are equipped with a 3.5L engine with a 9-speed automatic transmission. On January 6, 2023, Honda released service bulletins 23-008 and 23-009. These service bulletins address the failure to restart issue in the 2016-2019MY Honda Pilot vehicles, as well as the 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2019-2022 Honda Passport, and 2020-2023 Honda Ridgeline vehicles. The repair outlined in the service bulletins is a two-stage countermeasure to remedy the issue. The first stage is a Programmed Fuel Injection (“PGM-FI”) software update. The second stage is only deployed if the software update fails to remedy the issue. The second stage, depending on the model and model year, consists of replacement of the starter assembly, starter relays, and a valve adjustment. Additionally, Honda extended the warranty coverage to 10 years with unlimited mileage for vehicles requiring the second stage component replacement. ODI continues to receive complaints of the AIS failure to restart, with many complainants alleging the campaign countermeasures had been completed.NHTSA has reviewed Honda's Information Request Letter responses involving warranty claims, lawsuits, and consumer complaints in addition to ODI's own data. This Engineering Analysis is being opened to further consider the potential safety defect, including gathering additional data regarding Honda’s service campaign efficacy. ODI is additionally expanding the scope to encompass all vehicles addressed in Honda’s service bulletins 23-008 and 23-009 as well as newer model year vehicles, which are substantially similar to the vehicles covered by the service campaign. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

We were waiting at a busy stoplight and our vehicle shut itself off and put itself into park. We could not get it to start again so we were stuck in the middle of traffic.

NHTSA ID

11776846

Incident

Nov 9, 2026

While driving and coming to a red light applying brake coming to a stop the vehicle completely shut off. All lights turned off no power was going to the vehicle leaving us in the middle of the road while light turned green and then back to red twice we were just stopped with no electrical activity on the vehicle. This happened three different occasions another occasion was during traffic stop and go at a stopped point it shut off again.

NHTSA ID

11776557

Incident

Nov 6, 2026

The vehicle continues to shut off its engine at stops and is unable to restart. This has been occurring at an increased rate since I initially reported it last summer. Warnings come on the dash as it struggles to try to restart. Recently it has started to take a full light cycle to get it to restart. I have to turn the vehicle off and wait some time and try restarting it. I’ve notified the dealership ANTRIM HONDA and their service advisor said it’s a known issue but the starters are on national back order and there’s nothing they can do to help.

NHTSA ID

11776494

Incident

Nov 2, 2026

Stopped at intersection and engine cut off due to auto-cutoff feature. When foot was released form brake, the engine failed to restart. It took approximately 30-45 seconds to get the vehicle restarted. Auto engine shutoff feature disabled for remainder of trip with no further issues. We have experienced this in the past as well 2-3 other times.

NHTSA ID

11776469

Incident

Nov 6, 2026

At stop signs, red lights or in traffic my car turns off completely and I have to restart the engine with cars honking behind me. This is a safety issue! I have to disable the idle stop every time I get in the car but I don’t always remember to. The dealer told me to just disable the idle stop, but why should I not be able to use this feature? This has happened ever since I got the car brand new and it’s annoying and dangerous.

NHTSA ID

11776061

Incident

Nov 5, 2026

The Auto Idle Stop (AIS) does not work properly and is unsafe. When auto idle engages at a stop light, it is slow to restart, beeps and flashes the battery symbol, and sometimes fails to restart. On a more recent trip, when sitting on a freeway offramp waiting for the light to change with my entire family in the car, the vehicle completely failed to restart after AIS engaged. We were sitting ducks on the freeway and were having difficulties restarting the van. We had to go into Park, Drive, and press the start engine button several times for anything to happen. This issue has been going on for a few months. The battery has been checked and is in good working order, no issues reported. The last battery check occurred today 11/5/2026. I am going to input the date the vehicle completely failed to start, since that time, I have tried to remember to turn off the AIS feature when driving the vehicle. This is a new car and should not be experiencing this incredibly dangerous situation. 2025, Honda Odyssey Elite

NHTSA ID

11775942

Incident

Oct 24, 2026

The 2025 Honda Odyssey I purchased has issues where the car will not start after the "Automatic Start/Stop" feature turns on. What that looks like is when I stopped on the freeway in rush hour traffic, or at a long traffic signal (usually with many, many people behind me on a busy road), my car will stall and not turn on. I have to wait, sometimes minutes, for my car to restart. This is a safety issue because it will stall / I will have to restart at very inappropriate times, like in rush hour traffic on the freeway. It has happened multiple times. No warning lights or messages came on, other than when the car had officially stalled. By that point, there is nothing I can do besides wait for a minute or so and restart car.

NHTSA ID

11775937

Incident

Sep 1, 2026

When auto shut off enables at stop lights, sometimes the car goes into park and seems to turn lff and has an error message. It requires pushing the brake and manually starting the car by hitting the on button. There is risk to a rear end collision since it doesn’t happen until you take your foot off the break to start after stopping so creates risk of a rear collision if cars behind don’t noticed you are stopped. It has happened multiple times and seems to happen even more frequently in eco mode

NHTSA ID

11775528

Incident

Oct 31, 2026

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2024-2027 Odysseys with a customer complaint of the rear sliding door latch being stuck, causing the door to remain open or closed. To better understand the cause of this condition, AHM would like to collect certain parts from the vehicle prior to attempting a repair of any kind besides diagnosing the issue to corrosion on the latch.

Service Bulletin - Under certain circumstances, after coming to a stop and the auto idle stop feature engages, the vehicle may not automatically restart. In other circumstances, vehicles may experience a slow crank or fail to start under hot ambient temperature conditions.

Dealer Message - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. In other circumstances, vehicles may experience a slow crank or fail to start under hot ambient temperature conditions. The customer should be able to restart the vehicle by selecting Park and pushing the ENGINE START/STOP button.

Service Bulletin - Customers may report vertical lines on the Rear Entertainment System (RES) screen during startup when using an HDMI connected device. This problem occurs when there is a resolution mismatch between the RES screen and a connected HDMI device.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2024-2027 Odysseys with a customer complaint of the rear sliding door latch being stuck, causing the door to remain open or closed. To better understand the cause of this condition, AHM would like to collect certain parts from the vehicle prior to attempting a repair of any kind besides diagnosing the issue to corrosion on the latch.

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2024-2027 Odysseys with a customer complaint of the rear sliding door latch being stuck, causing the door to remain open or closed. To better understand the cause of this condition, AHM would like to collect certain parts from the vehicle prior to attempting a repair of any kind besides diagnosing the issue to corrosion on the latch.