Electrical System Problems of Honda Odyssey - part 1

Today 09/24/2026 while stopped at a traffic light the car lost all electrical power and blacked out while in auto-idle stop. Last week while driving the middle electrical screen went dark. After a few minutes while driving the h symbol appeared on the display and the screen reloaded.

See all problems of the 2024 Honda Odyssey 🔎.

The auto idle stop (ais) failed to work properly for my wife when she was stopped at a stoplight. When she stopped at a stoplight the engine stopped. When she took her foot off the break and applied pressure on the gas pedal a warning of some sort showed on the screen where the speedometer is and the car failed to restart and move forward. This caused a hazard because the people behind her lurched forward because they assumed she would move forward once the light turned green. When our car failed to start she wasn't sure what to do to fix the problem so all the cars backed up behind her for a short time before she realized she needed to put our car in park, turn it off and then restart the engine. I will take my car in to the dealer as soon as possible. Until then we will have to disengage the auto stop function so prevent any further dangerous incidents.

See all problems of the 2025 Honda Odyssey 🔎.

The power liftgate is no longer working and locked shut a few hours after multiple warning messages. There was heavy rain that night. It did randomly open and shut all or part of the way before that, sometimes after closing. This often happened after heavy rain when the van was not even in use. It could have popped open at any time, and then warning messages popped up and blocked the notifications and other dashboard information and distracted the driver. It was confirmed by the dealer and they recommended it get replaced, however, the electrical panel was corroded by water damage from a suspected leak in the roof rail. The dealer said that it would probably happen again and not to get it fixed until the leak was determined. Many others have reported this online regarding the Odyssey.

See all problems of the 2020 Honda Odyssey 🔎.

9/22/2026- the car idle stop failed to restart at a intersection. 9/23/2026- the car did not start after stopping to get gas. I have not taken it to the dealer yet. Will do it as soon as I get a chance. When the idle stop fails the car shift into parking and only the accessories are on.

Problem with the idle auto off feature failing in traffic. Will be driving fine, come up to a stop (at a stoplight, stop sign, etc) and the engine will shut off as intended with auto off, but engine will then fail to restart/stall. Have to push the start button on/off several times before the engine will restart and we can continue driving, the delay leads to safety concerns and possibility of an accident with traffic behind us accelerating expecting our vehicle to be moving or other drivers not being able to predict our actions due to erratic start/stop. There is no option to permanently disable the auto start/stop. No warning or maintenance lights indicating there's a problem. This issue has happened 5-10 times since we purchased the vehicle late 2024. We have not taken the vehicle in to the dealer yet.

The infotainment screen just went blank. No phone, radio, backup camera works. The car runs fine. Tried to reset and unplug the battery but did not fix the problem. Van is still under warranty taking it in for diagnostic.

I am submitting this complaint regarding a serious safety issue with my Honda's auto idle stop/start system. On multiple occasions, while stopped in traffic or at an intersection, the auto idle stop system has automatically shut off the engine as designed. However, when I release the brake and attempt to proceed, the engine fails to restart. The vehicle becomes stalled and immobilized in the middle of active traffic. I have been stuck at traffic intersections because of this failure, creating a significant safety concern. When the vehicle fails to restart, surrounding traffic expects the vehicle to move when the light changes, while I am unable to accelerate or safely clear the intersection. This creates a risk of a collision, particularly from vehicles approaching from behind.

This car has on multiple occasions now just turned off the enginee when stop at a stop light and the enginee idle feature is on. It makes you restart the car when you are trying to go from a stop light this is dangerous and causes angry driver behind you. I took my one year old car to the Honda dealership and they said they couldn’t help. This is a safety issue. It’s happening more and more frequently.

Multiple instances of the auto start not reengaging while stopped at intersection. Have to completely shut off and restart vehicle.

During auto idle stop (usually happens after more than 5 seconds in idle stop) the van will stall (put itself in park and engine turns off). Restarting takes approximately 30 seconds because the van will not turn back on right away no matter how many times the ignition/start button is pressed. I was advised by the dealership we purchased the van from, to allow it to happen more frequently so that it can be properly diagnosed so we have not been turning off the auto idle stop. But I feel this is a safety issue and should be addressed immediately.

My 2025 Honda Odyssey has repeatedly failed to automatically restart after the auto idle stop system shuts the engine off while stopped at traffic lights or in stop-and-go highway traffic. The problem began approximately four months ago and is intermittent, occurring roughly once per week. When the problem occurs, the auto idle stop system shuts the engine off normally while the driver is stopped with a foot on the brake. When the driver releases the brake, the engine does not restart as it should; instead, the vehicle automatically shifts into park and the instrument panel displays “accessory mode” or similar wording. The driver must then press the brake pedal and push the engine start/stop button repeatedly to restart the vehicle. So far, the vehicle has eventually restarted each time, but it can take approximately 2–3 minutes and multiple attempts. This creates a significant safety hazard because the vehicle becomes disabled in an active traffic lane, including at busy intersections and in stop-and-go highway traffic, while the driver attempts to restart it.

While the idle stop system was active, the vehicle turned off while stopped at a red light as expected. After the light turned green, the vehicle did not restart and turned all the way off and then attempted to reboot. I had to push the on button to turn the car back on. The first three attempts to start the vehicle resulted in clicking sounds like a dead battery. This has reoccurred at least 4 times in the past couple weeks and has only occurred while restarting with idle-stop and not when starting for the first time. I’m concerned I will get rear ended while I have my little kids if it doesn’t restart.

The vehicle's auto idle stop (ais) system failed to restart the engine after engaging at a complete stop. The affected components are the engine, starter motor, and ais control software. The vehicle is available for inspection upon request. On xxx, at approximately 7:43 pm, the ais system engaged while I was stopped at the intersection of [xxx]. Upon releasing the brake pedal, the engine failed to restart. The vehicle became fully immobilized in an active left-turn lane with traffic behind me. I was required to shift to park and manually depress the start button multiple times to restore power. Multiple vehicles behind me began sounding their horns. A minor child was a passenger in the vehicle. This is not an isolated incident. The vehicle has been presented to howdy Honda, in austin, texas, for the same defect on three to four prior occasions. On the most recent prior visit, the dealer replaced the starter motor — the specific remedy prescribed by Honda technical service bulletins 23-008 and 23-009. The vehicle was returned to me as repaired. The failure recurred the same day. The defect has been confirmed and repair attempted by the authorized Honda dealership. The manufacturer has been on notice of this defect class-wide since at least 2018. Prior to and during failure events, the instrument cluster displays a red exclamation mark warning light and/or a "brake system" warning light. These warnings first appeared in conjunction with the initial ais failure events and recur with each subsequent incident. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

My auto start-stop idle function is malfunctioning. When I stop at a traffic stop light or the car comes to a stop, the car completely stalls when pressing the accelerator to go forward. This is resulting in very confusing and chaotic situations in the middle of the road with cars behind me honking. I need to turn off the engine completely and then wait a few seconds and then restart the car before going again. This is creating hazardous conditions on the road for my family and other cars.

Auto stop start sometimes doesn't work even though battery was just replaced. Sitting at stoplight and when the car turns off with auto stop it does not turn on automatically when trying to move the car. Have to cycle the ignition and sometimes does not start.

1. Component failed: the low-pressure fuel pump failed. The vehicle is currently sitting at my residence and is available for inspection upon request. 2. Safety risk: the vehicle stalled completely while driving, causing an immediate loss of propulsion on a public road, creating a severe collision risk. 3. Confirmation: the problem has been pulled and confirmed by an independent service center (autozone diagnostic scan tool), which pulled a code to replace the fuel pump. 4. Inspection: the component has not yet been inspected by the manufacturer, police, or insurance representatives, as the manufacturer is currently refusing to authorize an inspection due to a salvage title. 5. Warning lamps/symptoms: immediately prior to the stall, a complete cascade of warning lights appeared on the dashboard simultaneously, and the vehicle sputtered aggressively upon attempting to crank and restart. Assessment: this is the identical, textbook physical failure condition of NHTSA campaign 23v-858 regarding defective factory-installed denso fuel pumps in 2018 Honda Odysseys. American Honda corporate is using an automated salvage title database filter as a pretext to deny mandatory federal safety recall remedies on a vehicle with zero structural fuel system damage.

See all problems of the 2018 Honda Odyssey 🔎.

2025 Honda Odyssey experienced an auto idle stop no-restart condition. While stopped at a traffic light, the auto idle stop system shut the engine off, but the engine failed to restart when attempting to proceed. The vehicle was disabled at an intersection, creating a potential safety hazard.

The auto idle stop system intermittently fails to restart the engine after the system shuts the engine off while the vehicle is stopped. When this happens, the vehicle remains disabled and I have to completely restart the vehicle before I can continue driving. This has happened twice while stopped in highway traffic. On both occasions, traffic began moving while my vehicle failed to restart, creating an immediate crash risk and nearly resulting in collisions from vehicles behind me. The problem is intermittent. The vehicle has previously been brought to a Honda dealership for this concern, but the failure continues. I have contacted the dealership again and have also contacted the manufacturer regarding the issue. There were no consistent warning signs before the failure. The problem occurs after the auto idle stop system activates. Because the vehicle may fail to restart unexpectedly in active traffic, I am concerned that the condition presents a serious safety risk to the occupants of the vehicle and surrounding motorists. The vehicle is available for inspection upon request. This condition appears consistent with NHTSA engineering analysis ea25-004 involving auto idle stop no-restart complaints on Honda Odyssey vehicles.

The van got stuck in park after backing out of a parking lot. Changed to drive but gear shift back to park. Have to restarted the car twice. People were honking nonstop. This is not safe.

Vehicle auto engine stop engages at intersections. Car fails to restart when system is supposed to reengage. The vehicle then has to have ignition restarted causing unanticipated dangerous situations. There is no warning that the system will fail to reengage and the problem is intermittent. This has happened several different times causing dangerous traffic hazards.

1. The tailgate of Honda Odyssey started opening and closing on its own. 2. There was water damage on the electronic tailgate control unit that short circuited it making it misbehave. 3. The unit started opening and closing on its own mid drive and caused a minor fender bender. 3. Honda dealership could not find any source of water intrusion.

See all problems of the 2019 Honda Odyssey 🔎.

Stopped at a light, auto idle stop engaged, engine shut off normally. The moment I pressed the gas, everything died — engine and all electronics. I pressed the start button two or three times with no response, then it finally started. It was still in drive. The hazards wouldn't turn on right after, then everything gradually came back to normal.

My 2025 Odyssey stalls. The engine will turn off when I am stopped and will take at least 2 retries to get the engine to turn over. Once I was at a stop light on an interstate off ramp when it stalled. Once I was at a stop sign when it stalled. Twice I have been unable to start it at a store. I will settle the brake & push the start button & nothing will happen. I will try again. I have to take my foot fully off the brake, wait a few seconds, & try the steps again. It eventually starts, but I'm afraid that someone will hit me and hurt my children or myself as I'm a sitting duck.

Sitting at a light, the auto stop system activated and shut the engine off. When the light turned green, I took my foot off the brake and the engine failed to. Start and the entire electrical system shut off. The card was completely dead. I sat there for several minutes and I was able to restart the car.

My 2024 Honda Odyssey has repeatedly failed to restart after the auto idle stop system shuts the engine off while stopped at a red light or in traffic. Normally, the engine should automatically restart when I release the brake, but on several occasions the vehicle completely shut down and I had to manually restart it. During one incident, the vehicle would not restart for approximately 1–2 minutes despite repeated attempts. This left the vehicle disabled in traffic and created a serious safety concern. The problem has occurred multiple times.

While driving my 2026 Honda Odyssey, I stopped at a red light and the engine shut off through the auto idle stop system. I pressed the auto idle stop off button because I wanted the engine running again before proceeding. Instead of restarting the engine, the vehicle completely shut down and became inoperable in traffic. I repeatedly attempted to restart the vehicle, but it remained unresponsive for approximately 20 seconds before it finally restarted. This created a serious safety hazard because I was unable to move the vehicle while positioned in active traffic. This was not normal auto idle stop operation, as the engine should have restarted when I pressed the button. This has happened several times already, where the car will not restart the engine. Requesting that NHTSA investigate possible auto-idle stop/failure-to-restart problems affecting the 2026 Honda Odyssey.

My ais system kicked in causing the engine to shut off. Unfortunately, the engine did not restart. I was unable to start my car or even shift it to neutral for a helpful bystander to help me push my car off of the road. I was blocking traffic on a busy road and I am very fortunate that I was not rear ended. Eventually, after about half an hour, was able to get the car restarted (even then, lots of “clicking” and hesitation with starting). I then drove the vehicle home. I took it to Honda and they made me aware today that they were unable to get the car to repeat this problem, nothing was wrong, I could pick it up and let them know if it happened again.

On Tuesday, September 8, 2026 while sitting idle at a red light I had my foot on the brake and when the light turned green, I went to push on the gas and the van would not go, nearly causing the car behind me to rear end me because they figured I was going since it was a green light. I turned my hazard lights on, and there was a warning that appeared on the dash but I did not catch what it said in time. When I looked down, the car had put itself in park so I shut the van off and when I turned the van back on, there was a red battery light on the dash and it said “ to continue to drive depress brake pedal and push switch”. The van would not go into gear so I then had to call police (I was blocking a traffic lane) and a tow truck. The van is still at our local Honda dealer where it was purchased and to my knowledge has not been looked at-today is day three of the dealership having possession of the van. Also, on the same day-two stop lights previous to this it had a severe lag from brake to gas.

I drove my kids 5 miles to school and was on my way back home going thru a school zone with a stop sign. As I stopped at a 4 way stop car went into idle and I went to proceed and car stalled and automatically went into park. I had to wave people around me. Luckily I was able to still put on hazards. The battery light came on, but I was unable to restart my car after several attempts. I opened my door to wave on more people and when I tried to start my car again it finally started. I am so luckily I wasn't at a busy intersection and took a different route home and lucky my kids weren't in the back either. This was very scary and am now worried for it happening again.

My vehicle has approximately 12,000 miles and on 9/7/26 and 9/11/26, my vehicle would not restart at a light with the auto shut off. I had 4 small children with me on 9/7/26 and had several cars behind me aggressively honking. I could not get the car to restart for several seconds. I was finally able to turn the car completely off and get it to restart. The instance on 9/11/26 was equally as startling. After talking to a friend who has the same Honda Odyssey, she said her van was actually at the dealer with the exact same problem. The Honda dealership told her this is a “known issue” and she is having her starter replaced. I am so upset that Honda has failed to ensure the safety of a van that families rely on. I will be taking our van to the dealer next week.

The vehicle will slam on its brakes with nothing around it. This has happened more times than I can count now and has almost caused us to wreck on multiple occasions.

The auto idle system shuts off the vehicle completely at a stoplight or intersection and fails to restart when you release the brake. The vehicle is stuck in traffic and doesn’t restart for a few minutes mine had to be jumped started this third time it happened. This created a hazardous safety condition for my family in which kids are always traveling. The dealer has not provided solution. Concerned this can cause a fatality because I can get rear ended.

The idle stop system was on while I was driving my car. At the stop light, it activated. When the light turned green and I took my foot off the gas, the car shut off. I had to press the ignition start button several times to get the car to start again.

The vehicle suffered an auto idle stop failure at a red light. The engine shut down normally, but failed to automatically restart when the brake was released. There were no dashboard warning lights, and I was forced to manually shift the vehicle into park to restart the engine in active traffic.

All systems relating to the forward facing camera have failed.