Electrical System Problems of Honda Odyssey - part 1

Receiving acc, lane keep assist, front collision , auto high beam errors on the instrument screen. None of the safety features work. Cruise control does not work.

See all problems of the 2020 Honda Odyssey 🔎.

Multiple Honda sensing safety systems (collision mitigation, lane keeping, road departure, adaptive cruise, and auto high?beam) disabled suddenly on 2020 Honda Odyssey ex?l around 76,000 mi. Dealer and two independent diagnostics confirmed dtc u3000?49, internal electronic failure of the forward recognition camera. The fault disables all automatic braking and lane?keeping functions. Battery voltage and calibration verified ok; component failure is internal. Honda quoted ~$2,000 repair. This is a significant safety risk since all advertised crash?avoidance functions stop working.

As I was driving the car computer showed overheating, brake failure, transmission failure and the car started shaking and the engine died. I had the car towed by triple aaa to a auto repair shop, but the next day when they went to fix the problem could not replicate it.

See all problems of the 2019 Honda Odyssey 🔎.

Complaint description: while driving my 2025 Honda Odyssey, the auto idle?stop system engaged in the middle of an intersection at a traffic light, shutting the engine off as designed. When I released the brake pedal, the engine failed to restart, leaving the vehicle stalled in traffic. The dashboard displayed warning indicators including the battery light, and the only way to move the vehicle was to turn off the car completely several time and try to manually restart the engine. This issue has occurred multiple times and poses a serious safety risk, especially when it happens in intersections or heavy traffic. I almost got hit by an oncoming car! on each occasion, surrounding traffic was forced to maneuver around my vehicle, creating the potential for a rear?end or a side collision. This has been happening for a long time now and these instances are occurring almost weekly at this point. They are increasing. I have seen that other 2025 Odyssey owners are reporting the same issue — engine shuts off after auto idle?stop activates and will not restart — sometimes requiring a full restart and causing dangerous traffic situations on carfax. Com. Based on similar NHTSA?documented complaints and investigations into Honda auto idle?stop restart failures, this appears consistent with a known defect pattern involving stalled engines and failure to restart after idle?stop engagement. (lawinfo. Com and edmunds. Com) the dealership has already replaced my low pressure fuel pump and state that they are fulkly aware of the issue and have not provided a permanent fix, and the problem continues to occur unpredictably. My wife and 4 children are in this car all the time. This defect could easily lead to an accident if the vehicle becomes immobilized in moving traffic. I am reporting this to ensure it is documented as a potential safety defect requiring investigation and mitigation.

See all problems of the 2025 Honda Odyssey 🔎.

**vehicle:** 2019 Honda Odyssey **components affected:** forward collision avoidance, lane departure, adaptive cruise control, braking system, exterior lighting, electrical system, instrument cluster **complaint summary:** multiple safety systems on my 2019 Honda Odyssey have simultaneously failed, including lkas, acc, collision mitigation braking system, auto high-beam headlights, and other driver-assist features. The dashboard displays warnings for nearly every safety-related system, and the vehicle disables these features without warning. **detailed description of the problem:** whenever I start my vehicle, multiple error messages are displayed related to the lane keeping assist system (lkas), adaptive cruise control (acc), collision mitigation braking system (cmbs), road departure mitigation, auto headlights, and other safety features. These warnings appear together and persist even after restarting the vehicle. Apparently, this issue is widespread among 2018–2020 Honda Odyssey owners, with many reporting the same cluster of system failures. The problem appears to be related to a malfunction in the vehicle’s electrical system, sensors, or control modules. In my case, the failures occur without any external damage, weather event, or driver action that would explain the sudden loss of safety functionality. When these systems fail, the vehicle disables critical safety features such as automatic emergency braking, lane keeping, adaptive cruise control, and automatic headlights. This creates a significant safety risk, especially at highway speeds or in low?visibility conditions. **frequency:** the issue occurs whenever the vehicle is started, affecting my driving everyday.

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.

See all problems of the 2024 Honda Odyssey 🔎.

Since purchasing this vehicle brand new off the truck, we have had it back at the dealership multiple times ,we've taken it for the plug in console not working for firesticks, a sensor not working on the passenger side door and claiming it to be open, the sliding door not working correctly, the doors locking and refusing to unlock, battery draining, ac not working, stalling, dying at lights, slamming on its own brakes with nothing around, transmission acting weird, it putting itself in to sport mode, transmission sticking, doors not unlocking or not locking, sensors going off, random errors on dash, screens not working, car play not working, suspension popping, steering being wiggly and loose, brakes squeeling. Today we were told by the dealership "he saw the damage that is resulting in needing to replace the steering column. With that being said, it is considered a safety hazard to drive this vehicle with the condition the steering column is in. " this is after multiple times of saying nothing is wrong to we have to charge the battery to you need a new starter to this.

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 computer system for the sliding doors and back hatch do not work properly. They will occasionally stop working or will stop mid-open or close. In addition, on three separate occasions the sensors did not work. One time the back hatch started to close while I was getting something out of the trunk. It did not sense by body and would not stop. I tried to stop it physically but the hatch continued to close. If I had not gotten out of the way, it would have crushed me. This happened to my husband on a separate occasion as well. He is athletic - [xxx} and [xxx] and was pushing up with all of his strength and the hatch continued to close on him before he had to jump out of the way. On the third occasion - the sliding side door started to close on my [xxx] as I was helping him into his car seat. This issue will kill someone. The 2019 Honda Odysseys need to be recalled immediately. I alerted my local Honda service center (don jacobs in lexington, ky). I asked them to notify Honda and they told me they wouldn't do that unless more people had similar issues. They have attempted to fix the computer system on several occasions and always say the issue is fixed. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Auto start/stop system engaged, when given gas the engine did not start. Battery light came on and had to turn off and on the vehicle to start the engine. Ea25004 - investigation [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The vehicle completely stalled, we believe it’s related to the engine in reference to the idol on and off mechanism. We began to drive forward and the auto on off starter caused the car to completely shut down and freeze in an intersection.

After I received a software update for my 2018 Honda Odyssey elite the car has been stalling when idle. It is very dangerous because I will be at a stop light in drive, and the vehicle will shut off with no power. Cars will be behind me or no cars, and I have almost been rear ended. I did not have this problem until I received the new software update. It keeps occurring more and more often.

See all problems of the 2018 Honda Odyssey 🔎.

Power tailgate stopped working. Warning indicator indicated power tailgate failure. Dealer found water to be leaking onto tailgate unit from driver’s side roof rail. Recommended replacing and programming new ptg unit and resealing water leak. Repair cost was $1,311. 51.

See all problems of the 2021 Honda Odyssey 🔎.

I am submitting this complaint to report a serious and recurring safety issue with my Honda Odyssey involving the camera system. Multiple warning messages and fault codes appeared on the dashboard simultaneously, including: -collision mitigation system problem -adaptive cruise control problem -lane keep assist problem -auto high beam problem these systems are all disabled. This failure occurred without warning and immediately compromised several critical driver-assistance and safety features. We have serviced at Honda dealerships and they said the only fix is a new $1500 camera (but the camera still works). Despite this, no recall has been issued. We have owned Honda vehicles for decades and never had these type of issues. A recall needs to be announced and owners allowed a fix at no charge. The transmission warning lights are also coming on intermittently and we paid to have Honda diagnose. The transmission is fine they said. Please help.

Idle stop failure. This has occurred many times. Presents itself failure to restart upon releasing the brake. Rough restart. Sometimes have to completely turn off car and restart.

The car stopped while driving in the middle of the street and would not turn off or on.

I reported issues regarding egress failure and children stuck within the back seat of the van, electronic dashboard failing while driving, and no start issues amongst others (11709419). Previously the certified dealer stated the issues just could not be reproduced, despite my videos, however, today they stated a Honda admin level director showed and told them the issues are being reported by others, they dont know how to fix it, and I need to come get my car, continue driving it.

See all problems of the 2023 Honda Odyssey 🔎.

The trunk door stopped working due to a leak from the rear left window seal causing the computer to become waterlogged the mechanic that fixed it said its a common issue with the Honda Odyssey and should be recalled by Honda, I am therefore requesting the NHTSA to investigate this matter further so Honda should reimburse for the cost of the repair this issue can be a safety hazard in the event of a emergency egress from the trunk as it's not possible to open from the exterior and there was no prior warnings lamps or messages.

Tailgate malfunction - unable to open and close tailgate. Warning message on dash states - tailgate power failure.

My 2023 Honda Odyssey elite has recurring, intermittent safety-related malfunctions across multiple systems. The most serious issues are: (1) door lock/unlock and rear door opening failures preventing emergency egress (children trapped), (2) intermittent “no-start/no-response” where push-button start does nothing (no click/no crank and sometimes no lights/electrical response), and (3) intermittent dashboard/instrument/electrical abnormalities while driving. I also previously experienced dangerous driver-assist behavior including unintended automatic braking and lane/steering behavior in construction zones. Door/egress: rear doors sometimes will not open from inside or outside even when the vehicle audibly indicates it unlocked. I have video of my children unable to exit the back seat. This is an emergency egress hazard. No-start/no-response: multiple events where the vehicle appears electrically dead and will not start, then after waiting ~10–30 minutes it starts without a jump. Stranding hazard. Recent examples: 12/31/2025 – doors would not open initially; after entry, no lights/electrical and start button produced zero response; after ~10–20 minutes it started. 01/05/2026 – while driving, dashboard/instrument display went off; buzzing noise believed hvac related occurred. 01/05/2026 – after parking at costco, vehicle again would not start (zero response); after ~30 minutes it started. 01/06/2026 – locking/unlocking malfunction again; rear doors would not open despite audible unlock (video). Repair history: authorized Honda dealer (bell road Honda) previously stated “cannot reproduce,” replaced dvd/recall items and performed a “reset,” but did not diagnose root cause; problems returned worse. Honda customer service case opened. Injuries: prior unintended automatic braking event (reported around 08/29/2023) caused injury (my legs hit dash; child had marks from car seat) and near rear-end collisions. Request: investigate potential safety defects.

On December 31 at approximately 300 p. M. , our 2015 Honda Odyssey experienced a sudden and complete loss of motive power while traveling eastbound on the sam houston parkway south just after crossing the buffalo bayou toll bridge at highway speed. While driving normally, the check abs warning light illuminated. Immediately afterward, multiple dashboard warning lights began flashing and the engine abruptly shut down with no warning. The vehicle lost all ability to accelerate and became disabled in active traffic lanes. Steering and braking were severely affected due to the sudden loss of power. Hazard lights were activated while the driver attempted to move the vehicle from the middle lane to the shoulder. We narrowly avoided a collision and were able to stop near the pine avenue on-ramp. Once stopped, the vehicle completely shut off and would not restart. All vehicle systems appeared inoperative except for the hazard lights, indicating a possible electrical system failure. Emergency services were required due to the dangerous location. The vehicle was occupied by five people, including three children. The sudden loss of motive power at highway speed created an extreme safety hazard and could have resulted in serious injury or fatality.

See all problems of the 2015 Honda Odyssey 🔎.

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.

Over the past month, I have experienced several incidents where my 2025 Honda Odyssey’s auto idle stop (ais) system failed to restart the engine after stopping at traffic lights. Each time, the engine did not turn back on when I released the brake, leaving me stalled in traffic and prompting error messages on the dashboard. There is currently no way for owners to permanently turn off this feature. When I took my vehicle to the dealership, I was told my starter was already having issues despite the car having less than 10,000 miles on it. This ongoing problem has made me concerned for my safety and the reliability of my vehicle.

Upon starting the vehicle, it failed to engage in reverse. Although the backup camera activated, the vehicle remained stationary. After multiple ignition cycles, the vehicle eventually engaged in reverse and then moved forward in drive. However, shortly after, the vehicle experienced a sudden loss of power and entered "limp mode," restricting speed to approximately 15–20 mph regardless of throttle input. The engine revved excessively high without corresponding acceleration, and a severe burning/heat smell emanated from the transmission/engine compartment. This failure occurred without any prior warning; notably, no dashboard warning lights or "check engine" indicators illuminated to alert the driver of a mechanical or electronic fault. The sudden, un-signaled drop in speed on a public roadway created a significant safety hazard for following traffic and risked a rear-end collision. The vehicle was towed to a certified Honda dealership where the transmission control module (tcm) was diagnosed as failed. The tcm is currently being replaced under the Honda certified pre-owned (cpo) warranty. We do not know what else requires replacement and repairs. The dealership will not cover the replacement of the transmission fluid, or engine fluid, despite the fluid being subjected to extreme heat and potential damage during the failure and subsequent limp mode.

Since I own this vehicle, 3 times tailgate failed. I have done repair it twice in Honda dealership at paramus NJ. Now it happened again after a year of last fix. Instrument cluster = warning sign appears stays there. Somewhere on back = constantly sound beeping - when driving tailgate = does not open and if open some how, it does not close. Neither automatic nor manually. I have to drive vehicle since I have no choice. I inspected all fuse in front under hood and in rear at cargo area.

This is now the second time that we are having a rear hatch failure. With about 37,000 miles on this van, the control module shorted out due to water getting into it due to a bad seam (according to other Odyssey owners who are suing Honda for this). We could not get the hatch to open or close, so I paid the dealer to fix it. Honda did give us a check after the fact to cover some of the bill. Now, with less than 51,000 miles, it has happened again. The hatch will not open or close. In the event of an emergency, this is a major safety issue, to be potentially stuck inside the cabin. The hatch started going up and down randomly, and we could not control it. Now, it won't go up or down. This van is is a mess. Not only does it have this issues, but the rear back up camera still does not work, even though it was recalled. . . They would not honor their recall, and the brakes occasionally come on without cause, when going around a corner and there is oncoming traffic. It thinks that we are headed for a collision, and it's another safety problem here in the northeast. Honda needs to own up to their quality problems relative to these three safety issues.

Vehicle shuts down and will not restart. So far this has happened three times. After a long delay, took foot off gas, held brake and pushed start and would not start. On third attempt vehicle was very labored on start.

Vehicle was driving normally down the highway then proceeded to shutdown without warning. Suddenly all of the trouble lights appeared indicatinging engine, transmission, hill assist etc cut on without warning. The van would not drive above 55 mph when turned back on.

My 2025 Honda Odyssey has been completely shutting off after the stop-start shuts the engine off. When the car actually “stalls” is when I let off the brake and it’s time to start going. Then I hear a ding, the dash lights come on, and I have to frantically hit the ignition button. This is happening at stop lights where there is the risk for other cars to safely go when the light turns green. I have to completely shut off the car and restart the engine while traffic is going on green.

Engine turns off by itself at stop. Auto idle stop was not turned on. It also happened when I pressed the reverse button. When it turns off by itself, I have to turn it back on and put it back into gear. It happened 4 times today.

See all problems of the 2022 Honda Odyssey 🔎.

Idle stop engine turned engine off at a stop light. When the foot was removed from the brake pedal the engine struggled to start up. It took several attempts to get the engine to start up. This has occurred before and the dealer replaced the battery. However, it is now happening again. There were no warnings .

The infotainment display has been malfunctioning. The display goes black and the back-up camera is not available. On the night of December 12, 2025, we were driving the car on the highway and the screen flickered in and out and then went black and so did the dashboard display. This was very scary as the entire car went dark and we were driving blindly on the highway. It appears that all 2018 Honda Odysseys have a recall for the infotainment electrical system except for the elite model that we purchased. I called the dealer last week and was told no recall available and we will need to pay the $179 diagnostic fee plus the cost to repair which will be significant. We will take the car in this week as the car cannot be driven safely without full dashboard and backup camera display.

My vehicle repeatedly and unexpectedly shifts into neutral while in drive, causing a sudden loss of power in traffic. This has happened multiple times without any input from me and has nearly caused a crash.

Dash has warning light showing "power tailgate problem", and power tailgate will not function. The next day there was heavy rain, and the dash had a flickering warning showing the tailgate was open. This also caused the interior lights to flicker on and off as the tailgate open warning was flickering on and off. I returned the van to my home for fear that the tailgate would open automatically while driving down the road. I had the tailgate control module replaced on February 27, 2025 for this same issue, which was due to a tailgate seal leaking water onto the tailgate control module that shorted the module. This is now the second time within less than one year this same module has shorted out. This is a known issue with a class action lawsuit already filed against Honda that should result in a recall. The potential danger of the tailgate opening while driving makes this minivan not usable to transport my kids for fear of their safety.

The tailgate control module failed due to water getting in to it from normal rain. There seems to be a leak in the seam and caused the failure. I took it to the shop and confirmed the failure, purchased a new control module and replaced the faulty one. I opened up the faulty one and it had water damage inside.