2025 Honda Odyssey Electrical Problems

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

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

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

When the auto idle system is forgotten to be not turned off the van will stall. We have had scary incidents where we have stalled at lights and have to restart the van one or more times to get it to drive. There is also problems with the van starting up in the first place. Sometimes when trying to turn on the van it takes a time or two to get it to turn on.

NHTSA ID

11775481

Incident

Sep 9, 2026

Dear NHTSA, My 2025 Honda Odyssey failed to restart after the Auto Idle Stop system shut off the engine at a traffic light. I had to move to the side of the road and call a tow truck. This created a dangerous situation, and I am concerned about the safety of this vehicle. I respectfully request that NHTSA investigate this issue to determine whether other Honda Odyssey owners are experiencing the same problem.

NHTSA ID

11775027

Incident

Oct 31, 2026

The idle/stop function fails frequently at stop lights and stop signs. When it stops the engine it fails to restart and drains the battery. It began occurring very early on with the vehicle I’m guessing around 20,000 miles. I took it to the dealership while it was under warranty and they replaced the battery, and I believe the starter. It seemed to help for awhile but around 40,000 miles it started occurring again. I’ve been lucky to not be rear ended but drivers have had to go around me or sit through a stop light. There are no warning lights. I try to turn off the idle off button every time I start the vehicle. It is very unsafe and no longer under warranty. The dealership seemed like they didn’t know what was causing it last time and they had the van for over a week.

NHTSA ID

11774973

Incident

Oct 29, 2026

The engine fails to restart automatically after shutting off at a complete stop (such as a red light or intersection

NHTSA ID

11774358

Incident

Oct 29, 2026

The Auto Idle feature has caused my car to stall multiple times. This is extremely dangerous because it always happens when I am in populated areas- sometimes at red lights and another time in stop/go highway traffic. My car is 1.5 years old and this keeps happening more and more frequently. I am very concerned that one of these times I am going to be rear ended because traffic starts to go, I let off the brake to drive and then my car stalls. I then have to turn my vehicle off completely and then back on to get it to not have issues. I do get a warning saying to depress the break and press the start button. Sometimes I get a red battery light on the dash.

NHTSA ID

11774307

Incident

Oct 28, 2026

The vehicle's Auto Idle Stop (AIS) system engaged normally when coming to a complete stop at an intersection, shutting off the engine to save fuel. However, when attempting go through the intersection after the light changed to green, the engine failed to restart automatically. The vehicle completely lost power in an active lane of traffic, creating a safety hazard. The vehicle had to be shifted into park and manually restarted to clear the roadway. This failure appears directly related to NHTSA Engineering Analysis EA25004 regarding Honda/Acura Auto Idle Stop restart failures.

NHTSA ID

11773974

Incident

Sep 18, 2026

My 2025 Honda Odyssey has repeatedly failed to restart after the Auto-Idle Stop feature automatically shut off the engine while idling in traffic. This is a serious safety hazard that could leave the vehicle disabled in a busy intersection, exposing occupants and nearby motorists to the risk of a potentially catastrophic collision. Despite two starter replacements in October 2025 and October 2026, the problem has occurred multiple times. The authorized Honda dealership acknowledged this is a known issue but stated that no permanent solution is available. No warning messages were observed before the failures. A vehicle that can unexpectedly become inoperable in traffic presents an unacceptable safety risk and warrants urgent investigation and corrective action. Please associate the above statement with EA25-004.

NHTSA ID

11773802

Incident

Oct 22, 2026

We have been experiencing issues with the car stalling while driving. Most recently, the car lost power a few feet into making an unprotected left turn leaving us stranded in the middle of an intersection in a vulnerable position for several minutes. This was deeply unsettling to have happen while making left turn maneuver. It seems to be a failure of the Auto Start/Stop function. After a few persistent trips to the dealer, they have now informed us that this is a known issue, but the parts are on backorder until January 2027. The workaround is turning off the Auto Start/Stop function, but this button does not have an indicator light, is not always confirmed on-screen, and is re-enabled by default EVERY time the car is started. It also appears that others have complained about this issue, and this deserves to be upgraded to a recall. It is unacceptable that a manufacturer would know about an issue with serious safety implications and not notice owners. This could have easily caused a crash and it is happening to others. This specific van is used to transport a disabled family member and outside aides often drive him in this car. We do not feel comfortable with a non-persistent workaround while others are driving this car while we wait for this part. - Auto Start/Stop and Drivetrain, available for inspection - Car stalls during maneuvers after stopping - Problem was reproduced multiple times. Dealer is aware. - Inspected by dealer. - No warnings, messages, or symptoms.

NHTSA ID

11773727

Incident

Sep 14, 2026

The Auto Idle Stop (AIS) on our 2025 Honda Odyssey will cause the van to stall and the engine will not restart. When this happens, our only option is to put the van in park, shut it down and then restart. Sometimes that van has not restarted for almost 90 seconds. We have had it into the Honda dealership three separate times for this issue. The first time they told us the battery was drained so they recharged for over eight hours. The last time they said "the battery fails the load test at this time" so they replaced the battery and stated that the vehicle was "operating as designed at this time." Since the last time we had it in for service (and with a brand new battery), the AIS has failed on us twice. The last time (XXX) it nearly caused an accident on a busy road in Northern Virginia. When it fails to restart the van goes into a default type mode (where most of the service lights turn on or flash and we will have to put the hazard lights on, put the van in park, shut it off and then restart the van. This issue has happened to us about 12 times int he last 8 months. I am very concerned that this will cause an accident at some point and is putting my family's safety at risk. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11773636

Incident

Oct 25, 2026

Auto Idle start stop system failed to start vehicle while. We were stopped at a red light auto idle shut down the engine once the light turn green and we attempted to move forward the auto start failed to cycle resulting in a stalled vehicle on the road, potentially increasing risk to passengers and other drivers on the road. This has happened multiple times.

NHTSA ID

11773494

Incident

Oct 25, 2026

When idle start activates at a stoplight sometimes the car will not start when you take your foot off the brake. Car then takes several tries but it will start again. This is a dangerous situation and can lead to accidents. Only seems to happen randomly after the car warms up. Dealer did replace the battery but it did not fix the problem. My guess is the starter does not perform correctly after heat soak in the engine bay.

NHTSA ID

11773441

Incident

Oct 15, 2026

The vehicle idle start/stop feature has started struggling to reengage, particularly, it seems, in warmer weather. At least six times in the past two months (Sept-Oct 2026), the start fails completely during a drive. What this means is that the vehicle is stopped at a light and the start/stop kicks in. When I lift my foot off the brake to prepare to drive again, a warning flashes on (it disappears quickly but says something was detected) and the car shifts into park. I cannot put the vehicle into drive without turning off the car and turning it back on. This is very dangerous as I have been at the front of and in long lanes of traffic. Other drivers honk and try to go around me while I am getting the vehicle back up and running. The dealer has checked the car twice but cannot replicate the issue (both days they had the car, the temperature outside was below 80 degrees, and that seems to be a factor). Therefore, they cannot make or recommend any fixes other than turning off the feature everytime I turn on the vehicle.

NHTSA ID

11772407

Incident

Oct 13, 2026

Unknown. **Vehicle:** 2025 Honda Odyssey Touring **Component:** Engine / Electrical System / Automatic Idle Stop My 2025 Honda Odyssey Touring has repeatedly failed to restart after the automatic idle-stop system shuts off the engine while stopped in traffic. This problem began very early in the vehicle's life, at approximately 10,000 miles, and has occurred an estimated 8–10 times. The vehicle currently has 40,340 miles. When the problem occurs, the engine does not crank or make any clicking sounds. Multiple attempts are required before the engine will restart. On at least one occasion, the dashboard displayed the message "Press Brake and Push Start." I cannot confirm whether this message appeared during the other incidents because I was focused on getting the vehicle restarted and moving out of traffic. The problem has occurred exclusively following activation of the automatic idle-stop system. The vehicle starts normally when initially started after being parked. This presents a serious safety concern because the vehicle becomes unexpectedly immobilized at traffic lights or intersections, potentially exposing occupants to rear-end collisions or other traffic hazards. Honda issued a dealer communication dated May 21, 2025 (NHTSA document MC-11019246-0001), specifically concerning 2023–2025 Honda Odysseys failing to restart following automatic idle-stop operation. I am requesting that NHTSA investigate this recurring safety defect.

NHTSA ID

11772287

Incident

Aug 29, 2026

The auto start-stop system fails frequently. If I do not turn off the system, when I stop on red light, the engine turns off as expected. However, it frequently fails to start. The car stalls and it's difficult to turn back on. I need to turn the car off completely first, then try to turn it back on. This usually takes 10-20 seconds. The situation presents a safely hazard as I'm not able to continue to drive through an intersection on a green light. I took the car to dealer 3 times. They were not able to reproduce he issue nor find the cause of the problem

NHTSA ID

11772279

Incident

Oct 19, 2026

When starting the car it takes a long time to officially start. This could leave me stranded. A Honda dealer has confirmed this is an ongoing issue as well as other car shops. It started to appear a few weeks ago. I have video I can send. The auto start stop system has shut the vehicle off in the middle of an intersection which could cause an accident or me being stranded.

NHTSA ID

11772128

Incident

Oct 9, 2026

Start/stop function failed. After stopping at a red light the start/stop function turned off the engine. After lifting off the brake, the engine died when attempting restart. This required turning the vehicle completely off and back on to continue driving.

NHTSA ID

11771617

Incident

Oct 11, 2026

There appears to be an issue with the automatic start-stop system. Occasionally, the engine will shut off at a stop light but fail to restart as expected. To get the vehicle running again, I have to turn the car off completely, wait a few seconds, and then start it back up.

NHTSA ID

11771547

Incident

Oct 10, 2026

I've now had multiple issues with the car shutting off during auto-idle - pull up to a traffic light and it automatically enters auto-idle. When you let off the brake, the van shuts off. Brought it to the dealer and it happened to them immediately - and the starter was replaced. I thought we were fixed, but it continues to happen (n=4) and Honda says "nothing to do, they've already replaced the starter" since they cant recreate it the day they tried. It most recently happened with my family in the car getting off the interstate and cars behind honking and approaching since we couldnt move the car quickly enough. There is no advanced warning, it just dies and the dash reboots - then indicates that you are not in park (as it tries to restart).

NHTSA ID

11771543

Incident

Sep 20, 2026

The idle stop failed to restart the vehicle on multiple occasions and killed the car in the middle of busy intersections. There is a known issue with the idle stop on late model Hondas and Zimbrick Honda said my VIN isn’t affected yet so I have to pay to have the known issue diagnosed. The problem is hard to duplicate but causes severe safety issues. I have an extended service contract and Honda is allowing unsafe vehicles to continue to operate with a known defect.

NHTSA ID

11771290

Incident

Sep 14, 2026

At a stop light, car threw a large BRAKE warning and stalled when the foot was taken off the brake. The car then had to put in park and turned off and on again. Having a car die in the middle of traffic, even when at a stop light, is not safe. We took the car to the dealership, where they informed us the starter needed replacement. Prior to this the car has been jerky when coming out of that idle stop feature, but hasn't stalled. The BRAKE warning did flash on the screen earlier that day but the car didn't stall.

NHTSA ID

11771276

Incident

Oct 13, 2026