2024 Honda Odyssey Electrical System Problems

The idle stop on the van will stall the vehicle. This has happened 3 separate times where the vehicle stops, then stalls when the engine tries to turn back on. This can be very dangerous, especially when trying to turn from an intersection and the vehicle stalls.

The vehicle was stopped at a red light. This vehicle is equipped with an auto-start/stop system to save fuel. Once the red light turned green the engine refused to restart. This was the second instance. The vehicle took over 30 seconds before it would restart. None of the push-to-start buttons worked, the car would not recognize that the brake was pressed, and it had also shifted itself into park. Very dangerous while traffic was moving all around us.

Automatic Idle Stop function fails. The car idles down while at a stop and then the entire car will shut off and fail to restart. This occurs frequently at stoplights, stop signs, in traffic or any time the vehicle idles down. The car fails to restart right away resulting in multiple attempts to start the engine and poses a danger to occupants in traffic.

The vehicle will shut off at stops after the auto idle stop engages. We have to turn the vehicle back on and press the "off auto idle stop" button to not have this happen. I will enter the last date we noticed this below.

The contact owns a 2024 Honda Odyssey. The contact stated that while stopped and using the Auto START/STOP feature, the vehicle failed to restart as designed. While attempting to restart the vehicle, the battery warning light flashed on the instrument panel. The vehicle restarted after several minutes. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 41,000.

The contact owns a 2024 Honda Odyssey. The contact stated that while driving at an undisclosed speed, and while stopped at a red traffic light, the Automatic START/STOP system failed, causing the vehicle to unexpectedly shut off. The vehicle was restarted and drove normally. On another occasion, while stopped in a drive-thru, the vehicle shut off unexpectedly. The emissions system, adaptive cruise control, and tire monitoring system warning lights were illuminated. The vehicle was taken to the dealer, where it was diagnosed with battery failure. The battery was replaced; however, the failure persisted. The manufacturer was notified of the failure. The approximate failure mileage was 22,000.

Car doesn't start, has needed to be jumped almost 20 times in a year. Auto start stop has shut the car off in intersections

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.

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.

On multiple occasions, the idle-stop function engaged at a red light and then either the entire car shut down or the computer froze for a minute or two then restarted. For each incident, we had cars behind us that either nearly hit us when we did not go forward when the light turned green or nearly hit us by aggressively going around us while we restarted the engine.

For a fourth time this year, the vehicle suddenly loses power while travelling on the freeway. It completely shuts off acceleration for 30-60 seconds and then picks back up by itself. The last two ocassions it happened was between 8:10 am and 8:12 am on August 18,2025. It happened on the freeway again on August 22 at about 8:13 am. I fear for my safety and life driving on the freeway

The 2024 Honda Odyssey has an idle-stop feature which is hesitating too much and risking stalling at intersections. Honda tried to blame it on the battery but even Honda has tested the battery as fine. The 2025 model has a software fix to disable the idle-stop when the AC is running hard and this would fix the 2024 but they claim to have to fix for the car. This is dangerous to be stalling at major intersections and many Honda and Acura vehicles have had and many still have this problem. Remembering to disable the control every time one starts the car is NOT a fix. Please help get this problem for 2024 Honda Odyssey’s fixed before someone gets injured or worse trying to restart a car when it keeps stalling

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.

With the auto cutoff engaged when stopped at a red light, the vehicle shut off on its own. I had to put the vehicle in park and try the push button start a few times before the vehicle turned back on. I had to put my flashers on because the light turned green before I could get it restarted. Someone had to swerve to avoid me. I was almost rear ended because the intersection I was stopped at was near an interstate offramp and the driver did not recognize I was stopped. I took it to a Honda Dealership and they said they could not replicate the problem but that there was a bulletin identifying the issue and that the bulletin had been withdrawn. I was told that it likely meant a recall would be coming in the future. The following message came on when the vehicle turned off: Shift to park. The red battery dash light was on.

When the idle stop feature is engaged (it is by default), my van will die at stoplights, stop signs, or any extended stop. The van has been to the dealership multiple times, battery has been replaced. Service advisor informed me that this is a frequent and known issue with Odysseys. I’m just hoping for some help and/or guidance to remedy this potentially dangerous situation.

I believe something is wrong with the electrical system tied into the infotainment system of the car, which displays the radio, heating, cooling, shows the rear camera controllers, as well as some fo the lighting in the sport L is not fully lit, for example where the shift gears is there a light that goes across the front, mines if red, only 1 side is actively turninig on, but the other side is off, at time the display become unresponsive, meaning no matter what I select nothing is displayed I only get the main screen that shows the FM/AM, CAR PLAY, Andriod Auto, Setting etc, when this happens and when the screen flickers the radio does not turn on, no sound is heard, I can turn on/off the ac, but can control where the air flows, or changing some basic settings, at times the rear camera will not work as well. I have videos of this for my records, and I did report this directly to Honda, but they indicated there is no recall for the infotainment system, I previously had a 2021 Odysessy and there was a recall for soemthing very similar, not sure why they would continue to use the same system in the newer vechiles, clearly something is wrong here, so I am documenting this for my records, but I believe Honda needs to step in and correct this issue before other electrical problems occur and someone gets injured

"The vehicle is experiencing an intermittent, loud popping/crackling noise coming from the speakers and infotainment system. This is a known symptom of a failure in the MOST (Media Oriented Systems Transport) bus network, specifically related to defective FAKRA connectors and coaxial cabling. This issue was previously the subject of NHTSA Recall #23V-431 for 2018–2023 models, but the defect persists in this 2024 model." Safety Risk: "When the MOST bus network loses connection for more than 20 seconds, the infotainment screen freezes or goes black, causing a total failure of the rearview (backup) camera image. This failure occurs unpredictably while the vehicle is in reverse, significantly increasing the risk of a back-over accident or collision. Additionally, the loud, sudden popping noises are a severe driver distraction." Dealer/Manufacturer Response: "The Honda dealership confirmed the issue is consistent with the known MOST bus failure (TSB 23-047). However, because the vehicle has 49,000 miles, both the dealership and Honda Corporate (Case # [Insert your number if you have one]) have denied a goodwill repair, despite this being a documented safety defect that has been the subject of prior federal recalls

On occasion, engine fails to restart on its own from a complete stop at a traffic light or road intersection when the Auto Idle Stop function is engaged. Engine and electronics in vehicle completely shut off, requiring the driver to put the vehicle in park and turn the car on again by pressing the Start button.