Honda
Odyssey

2015 Honda Odyssey with approx 34000 miles. During auto stop/start events the van intermittently would not restart. This issue was worse during warm weather and occured throughout the summer of 2025. It was also noticed that the van sometimes would experience hard starts when restarting soon after a drive. It appeared to be a heat soak issue with the starter and the starter could not turn over the engine. There were no service lights present during this issue. After it failed to start, you would need to turn the ignition off then back on to attempt to restart. Service was performed at Performance Honda in Fairfield Ohio on 11/21/2025, and although the van passed all tests in regards to battery and starter. Initially the van was not going to be repaired/covered, but the van happened failed to start while in the service bay. The starter assembly was replaced under warranty on 11/25/2025. This is a safety issue when the van doesn't restart while at a stoplight or even worse when attempting to pull out into traffic.

The Auto Idle Stop (AIS) feature on our 2024 Honda Odyssey EX-L has recently failed to restart engine leaving driver and passengers stranded in heavy traffic at intersection traffic lights. This has occurred twice, once while traveling alone, once while traveling with five year old child. Safety put at risk because driver had to exit car in middle of road during rush hour traffic while cars attempted to go around. The problem has not been reproduced or confirmed by dealer. Had battery tested at auto parts store and results indicate battery in good condition. Vehicle has not been inspected by the manufacturer, police, insurance representatives. There were not any warning lamps, messages or other symptoms of the problem prior to the failure.

When using the sensor-controlled, automatic wipers the lane keeping assist is silently disabled when the wiper speed switches to high. There is no warning or explicit notification of this other than the dashed lane markings indicator becoming "empty". There should be some on console warning that is more substantial so the driver knows they cannot rely on lane assist steering during this time.

While operating the vehicle, I have experienced repeated problems with the idle stop/start system. Specifically: 1-The engine automatically shuts off at stop signs and stop lights as designed, but at times the vehicle fails to restart immediately when the brake is released or the acceleration is pressed. 2-Multiple occasion while stopped in traffic the vehicle unexpectantly shifted into "Park." 3-For the last 3 weeks the vehicle sometimes hesitates to start on first attempt.

The contact owns a 2024 Honda Odyssey. The contact stated that while at a stoplight, the auto idle stop feature malfunctioned, and the vehicle failed to immediately restart after releasing the brake pedal. On several occasions, the vehicle had to be shut off before restarting. The vehicle was taken to the local dealer, who was unable to determine the cause of the failure. The contact was informed of the NHTSA Action Number: EA25004 (ENGINE AND ENGINE COOLING); and related the failure to the campaign. The manufacturer was not yet contacted. The failure mileage was 8,500.

The camera on top of the windshield and the radar behind the grill failed and the van has less then 12,000 miles! This is a well known issue. There is no obstruction. The area is clean and clear. Totally unacceptable.

The idle start/stop feature is not starting back up after stopping. This occurs after driving for for some time. I have had this happen to me in traffic where I am not able to quickly start my car back up. Sometimes it requires me to turn my car completely off on the highway. This also happens at traffic lights and I am not able to go after the light turns green. I took my car in to have it looked at and they said they saw the problem in the logs and it was that my battery was low. They replaced my battery however I am still having this problem with the brand new battery. An error shows on the dash but I can't remember it word for word.

Reference: EA25004 Car fails to restart while warm, and idle stopped. This has happened twice in the last three months. The car will idle stop at an intersection - temperature outside is around 90-93. Air conditioner and other electronics are on in the car, but not on full power. The car will fail to come back on when the foot is taken off the brake. The battery light turns on. Must re-start the car using the push button after several tries. This invariably happens at a very busy intersection. Cars behind you see you take the foot off the brake but the car doesn't move - this is a very dangerous situation. 17,000 miles on odometer Took the car to a dealer a few days later. The dealer says everything tests fine. I ask for a new battery, and they claim they replace it after forcing a test failure. Issue happens again a few weeks later. Also noted: the car has a hard time re-starting when it's warm. It'll turn once, cause the fuses to click, pause, and then turn over and start. So it may not just be the idle-stopper that's the problem. Took to another Honda dealer. They refused to do anything - claimed all tests were fine. They could not replicate the problem. They noted the battery was somewhat discharged. They charged the battery, and said everything still tests fine. No further repair made. On the way home (25 minute drive - mostly highway), near the house, coming back from idle stop - the car laboriously turned back (slow/delayed turnover) on. Still not right, Not a full failure, but not how it should be behaving either. I try to defeat the engine idle stop - but this is an added human factor and I often forget to do so.