Electrical System Problems of Honda Odyssey - part 2

Internal failure of the multipurpose camera/millimeter wave radar unit with code u300-49; available for inspection upon request. All safety features linked to multipurpose camera such as adaptive cruise control, lane keep assist, auto high beam, collision mitigation system, and road departure mitigation system are no longer functional. This problem has been confirmed at the local Honda dealership in addition to the numerous forum posts made by like Honda Odyssey owners with this same reoccurring issue. There were no warning symptoms or messages prior to failure.

See all problems of the 2020 Honda Odyssey 🔎.

The contact owns a 2025 Honda Odyssey. The contact stated that the engine auto start-stop system failed to operate as needed. The contact stated upon coming to a stop, the engine shutoff; however, upon releasing the brake pedal, the contact became aware that the engine failed to restart as designed. A message of a systems failure was displayed, and an image of a pedal and the push to start button were displayed. The contact was able to manually restart the vehicle immediately. The contact stated that the failure had been recurring and had worsened. The contact stated that the vehicle could only be manually restarted after 10 minutes, nearly causing a crash. The dealer was contacted, and an appointment was scheduled for a diagnostic test. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 16,000.

The infotainment center has completely failed. It began with sporadic shutting off and then restarting of the infotainment system as if a wire or connector were loose, along with popping sounds until the unit no longer turns on and appears to have completely failed. This effects ability of back up camera to function because the screen no longer works. There appears to be a recall of other Honda vehicles needing new wire connectors for a similar problem but it does not seem to include this vehicle.

See all problems of the 2018 Honda Odyssey 🔎.

Engine auto start/stop vehicle failed to restart upon taking foot off of brake pedal. Took my car to Honda dealership on 8/29, dealership said it was a bad battery. Had the battery replaced and 2 weeks later on 9/12 vehicle failed to restart upon taking foot off of brake pedal.

See all problems of the 2022 Honda Odyssey 🔎.

It was the same thing as my last three reports. The vehicle stalls in a way that freezes the vehicle where I cannot turn it off or on or engage or remove the parking brake. I cannot put it in gear or in neutral. Last time it stalled me in the middle of a seven lane highway. This time it was in the middle of a hospital entrance. I feel like I am gambling with my life and the dealership won’t listen to me! how many times does this have to happen??.

I was driving about 15 mph in my neighborhood when my passenger side mirror exploded and flew onto my passenger side door/window. It hit so hard that it left a scratch on the window and on the paint.

See all problems of the 2023 Honda Odyssey 🔎.

Van completely shut down while in an intersection and the battery light came on. It was hard to restart. Took it to the dealership and they cannot find the problem.

Can has been making a popping noise that can be felt in the steering wheel for 2 years. Honda has told me nothing was wrong after taking it in 4 times. Now my car keeps stalling at lights, sometimes it takes a while to get it to restart, and they can not figure out why. They keep saying the battery is fine and diagnostics finds nothing.

See all problems of the 2021 Honda Odyssey 🔎.

My car went completely dead while stopped in traffic on a busy street. My kids were in the car and thankfully I was able to crank it by pressing the start button. This issue has already been “fixed” and the dealership “cannot replicate”.

On our 2019 Honda Odyssey the passenger sliding door is failing to latch closed and stay closed or locked. The door is popped out in the back because the latch mechanism will not engage and electronically lock as part of the normal closing sequence like the other door. From what I can tell, this is the same issue reported in service bulletin 18-128, however when I called Honda about it, they said my VIN was not included in that recall. I am concerned because it seems like the same problem and it creates an unsafe situation where the door is not fully latching, even when manually closing the door and trying to lock it. I can hear excessive noise from that side of the vehicle, and the warning message flashed saying there is an issue with the right side sliding door, and the dome lights come on with an audible warning tone. I am unable to put passengers in the back of the van and needed to be very careful when driving it to the dealership for diagnosis yesterday. I'm still waiting to hear from them. I think this issue should be covered under recall work, since it seem like it is the same issue described in the service bulletin 18-128.

See all problems of the 2019 Honda Odyssey 🔎.

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.

See all problems of the 2024 Honda Odyssey 🔎.

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.

I am reporting a recurring issue with my 2025 Honda Odyssey, which exhibits difficulty starting the engine. Approximately two months after purchasing the vehicle in Dec 2024, the original battery failed and was replaced under warranty. However, the vehicle continues to experience problems when attempting to start. When I press the start button, the engine hesitates, cranks slowly, or feels as though it nearly fails to start. This issue occurs intermittently, regardless of weather conditions or the duration the vehicle has been parked. No warning lights or error messages have appeared on the dashboard the problem has occurred multiple times, most recently on Friday August 15th 2025, and creates a safety concern, as the vehicle’s unreliable starting could leave me stranded in potentially hazardous situations, such as remote locations or adverse weather. I have not yet had the vehicle inspected by a dealer for this specific issue, but I plan to schedule a service appointment to diagnose the problem. The prior battery replacement suggests potential issues with the electrical system, starter, or related components, possibly linked to the auto start/stop system currently under NHTSA investigation for 2018–2025 Honda Odyssey models. Additionally when driving down the road especially at low speeds the engine hesitates as if it’s not getting enough gasoline. Lastly the applecarplay screen and all other associated screens randomly go out. I have been to the dealership 3 times for repairs and they give me the run around saying they don’t notice anything so Honda won’t pay for anything and send me on my way.

Vehicle applied brakes for no reason. Lost ability to see reverse camera during backing up. Half of the instrument cluster went dim to become barely visible. Radio screen freezes randomly. Engine cuts out or shudders intermittently.

On two separate occasions the vehicle’s engine has turned off when stopped as part of the auto idle stop feature and then did not restart when I took my foot off the brake and pushed on the gas pedal. I was stuck in traffic frantically trying to get the van to restart and eventually was able to get it. This is a new van I’ve had less than a year. I took it to the dealer after the first incident and described the problem. They kept it for more than a day troubleshooting and didn’t find a solution. Verbally they recommended using the button that turns off the auto idle stop feature that must be pressed each time the van is started to turn the off the feature. I’ve done that most of the time since, but I happened to forget this week and then it happened a second time where I was unexpectedly stuck in traffic with the engine not coming back on.

The contact owns a 2017 Honda Odyssey. The contact stated that after exiting the vehicle and pressing the buttons to lock the doors, the front driver’s side door locked and immediately unlocked, failing to remain secured. The cause of the failure was not yet determined. The local dealer and the manufacturer were notified of the failure, but no assistance was offered. The failure mileage was 80,000.

See all problems of the 2017 Honda Odyssey 🔎.

Several months ago my wife was driving when the automatic brake system engaged when a car was turning in front of her. This engagement startled her and she felt the emergency braking was unnecessary considering the speed and distance the car was in front of her. This incident concerned her and made her lose confidence in the safety of the car. Then just recently we began encountering a almost consistent but sometimes intermittent brake system error along with multiple trouble notices about problems with road departure mitigation system, lane keep assist system, collision mitigation braking system, adaptive cruise control, etc. . When using the car. We received an error code u3000-49 reporting an internal electronic failure in the multipurpose camera unit. Online searches of this issue seem to be very common and concerning on how many are occurring considering this is a safety system. Our van has approximately 54,000 miles on it.

My van has 2 automatic sliding doors, 1 on each side. The cables for both doors have now broken. So neither automatic door works anymore. This is clearly a common problem. And it's a safety issue for those of us with small children and pitched driveways, where the doors can now slide and trap our children. I can't believe a recall hasn't been issued for this.

See all problems of the 2014 Honda Odyssey 🔎.

While accelerating from a complete stop at a red light, immediately after refueling, the vehicle suddenly lost all propulsion power and forced itself into neutral without any driver input. The dashboard lit up with numerous system warnings at once, including: •emissions system problem •brake system problem •abs problem •brake hold system problem •electric parking brake problem •vehicle stability assist (vsa) problem the engine won't start, leaving me stranded in the middle of an active intersection. I attempted to restart the vehicle multiple times with no success. Police responded to the scene, confirmed the vehicle could not be driven, and a tow truck transported it to a nearby Honda dealership. The tow truck driver suspected an alternator failure, but the dealer’s inspection the next day could not reproduce the issue. They reported that the alternator and battery “tested fine” and that no trouble codes were stored in the ecu. No repairs were performed, and no cause was identified. Safety concern: this incident created an immediate traffic hazard. The vehicle’s sudden loss of propulsion in traffic, combined with the inability to restart, could easily have caused a collision. Multiple critical systems were reported as failed simultaneously, indicating a possible electrical, fuel system, or control module failure. I am aware of similar complaints from other 2018–2019 Honda Odyssey owners in which sudden power loss occurred, often accompanied by numerous system fault messages. Many reports link these events to fuel pump failures, loose battery/ground connections, or transmission control malfunctions. This suggests a broader pattern of intermittent safety-related defects. Requested action: please investigate this incident and similar cases for potential design or component defects.

While stopped at a red light with brake engaged but not fully pushed down, the engine remained running while auto start/stop feature was still on. This was not the problem. Suddenly, all electric shut off including the engine. We fully engaged the brake and restarted the vehicle. This vehicle has also given low battery warnings right after engine is turned off but stereo etc remain on before the driver door is opened. The battery is less than a year old. Vehicle is available for inspection, traffic safety was a concern, we have not taken it to a dealer yet, and no one has inspected this yet.

The contact owns a 2007 Honda Odyssey. The contact stated that while the vehicle was parked in the driveway, the rear cargo window exploded and shattered into pieces. The contact also stated that while driving on a service road at 35 mph, the rear driver's side window exploded and shattered into pieces. No warning light was illuminated. Additionally, the contact stated that the air conditioner had been replaced 4 times due to constant failure. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 215,000.

See all problems of the 2007 Honda Odyssey 🔎.

In our 2018 Honda Odyssey ex-l, a few weeks ago 5 different warning lights started coming on when the vehicle was started and continued while the car was driven. Lane assist, collision warning, auto high beams, braking system and adaptive cruise control. Just yesterday the rear hatch started to malfunction; currently the rear hatch can be opened and closed manually but the power lift does not function and now is the 6th warning on the driving display. The car was taken to a Honda dealership for diagnosis, and after paying $99 for the diagnosis of the issues, several other diagnosis fees would be required to get to the root of the issue which the tech states is most likely a control module malfunction due to a water leak. The fix would then be finding and fixing the leak, then replacing the module and wrapping the module in plastic to prevent future issues. Then more diagnosis fees to find and correct the other issues which could include replacing the multipurpose camera. -if a selling point of the driver assist, collision warning and automatic braking are safety improvements, by default if the system is faulty then ours and others safety is at an increased risk. -the vehicle has been inspected by a dealer -before a few weeks ago no warning lamps, messages or other symptoms were present. All of the symptoms have been rather sudden. We have been getting rain almost daily for the past few weeks.

The forward-facing camera and/or radar unit failed one morning while running errands, resulting in 5 separate adas system failures. With these safety features not working, our safety and the safety of others is at risk. We took it to our dealer and were told we would have to pay a diagnostic fee of $205, even though they clearly already knew what the problem was- based on the multiple complaints through NHTSA and various other forums and websites from Odyssey and other Honda model owners and across multiple years. The problem was confirmed by the dealer and they quoted us $2025 and we're still not sure if that includes just the camera and/or the radar unit, which is another $600 part. Other dealers have quoted only $1200 to fix the exact same thing, with others charging more than double that. The 5 separate warning messages scroll across our screen repeatedly and are very distracting as you're driving. With multiple electrical issues already in recall status by Honda, this is another one that they should be taking responsibility for and not dumping this defective electrical repair on their customers. Who's to say that we won't be in this exact same predicament 3 or 5 years from now if the part or parts aren't fixed! definitely expect more from Honda. . . Very disappointed and feel betrayed by the inferior parts they're passing on as quality products.

The contact owns a 2020 Honda Odyssey. The contact stated that on two occasions while driving with the idle stop feature engaged, while the vehicle was idling and stopped, the engine failed to restart as intended when the brake pedal was released. The vehicle was restarted and operated normally. The vehicle was then taken to a dealer however, the failure was not able to be duplicated. The manufacturer was notified of the failure. The failure mileage was approximately 88,000.

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.

Sometimes the door locks will not lock, an obvious safety issue. I'm certain all the doors are closed and contacts are clean. I'm guessing a flakey relay because it doesn't happen a lot, perhaps 8 times in the past 12 months. I reported it to Honda America but they said the dealer has to verify it and the dealer has been unable to reproduce it.

I am submitting this complaint regarding a faulty multi-model seat weight sensor (sws) in my 2020 Honda Odyssey. I understand that NHTSA recall 24v-064 covers this issue for certain vehicles; however, my VIN is not included, even though my vehicle is exhibiting the same malfunction described in the recall notice. Multiple independent mechanics and certified airbag technicians have inspected my vehicle and confirmed that the srs (supplemental restraint system) circuit is open, indicating that the front passenger airbag will not deploy in the event of a collision. This represents a serious safety hazard consistent with the defect outlined in the official recall documentation (NHTSA recall 24v-064 report: [xxx] ) the warning light for this malfunction was present when I purchased the vehicle in August 2025. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

This vehicle had the recall repaired for the most bus cable issue that Honda has. Now they vehicle is back having the same issue and Honda has not done another recall for the issue starting again for the same thing this is a safety issue. You lose all rear warnings cameras and detection. Honda will not repair the recalled issue again. They have not properly fixed it.

The vehicle body weather seal did not function water was leaked into the rear trunk of the vehicle, resulting in water damaged carpet/ foam and malfunctioning/ broken power liftgate control module for the rear hatch. The control module was found to be corroded resulting in a nonfunctional rear hatch.

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.

Water intrusion, verified by observation/application of water. The leak resulted in water dripping on the tailgate/liftgate control module and the general rear cargo area, causing corrosion inside the control module rendering the control module inoperable, which made the power liftgate inoperable as well. Additionally, the rear cargo area had standing water that had accumulated over an unknown period of time that was visible when you lifted the carpeting. The liftgate latch mechanism also "locked" while the liftgate was open, making securing it closed in the normal way impossible. I would have needed to secure it with bungee cords or tape or some other haphazard way if I wanted to drive it safely on the streets or any contents in the back of the van could have fell out in traffic, or the liftgate may have inadvertently lifted at any time or place uncommanded, causing any type of hazard. Replacing the control module ($331. 53) remedied the liftgate failure. However, the leak remains, and will allow the same thing to continue to happen. Applying water to the area where the seam on the drivers side body panel and the roof panel meet resulted in water being seen dripping in the interior of the vehicle and onto the liftgate control module. This area should have been made waterproof before the vehicle left the factory, and should be recalled to make it right.

The sensor/computer/camera on the windshield overheats and causes it to fail mines at 100,000 and its a $1600 repair dealer said because the windshield sits in sun while driving etc and the sensor overheats and melts the inside of the computer soldering. Unacceptable so much for my safety features all gone I dont have the money to replace.

Not sure if this is the right complaint form, but we attempted to have a service center address 2 recalls on our vehicle and they would not perform them and would not provide a reason why the recalls were not addressed. The service center is autonation Honda in westminster CO [xxx] ). We dropped our vehicle off on 7/24 for an oil change and to address the recalls. They said the work was complete on Monday 7/28 but would not provide an invoice of work completed. I've attempted to contact the service center by text and phone calls and they are not responsive. I contacted corporate Honda and they confirmed that the recalls have not been addressed. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The vehicle's auto idle stop (ais) malfunctioned. The vehicle stalled and required a complete "shut down" to restart. The vehicle was first in line at a traffic light. The ais system engaged. When I took my foot off the break to "go" when the light turned green, the car stalled. An error message popped up, indicating that I needed to shift the car into "park". I did so and the car did not start. I attempted to turn the car off several times, while in park and my foot depressing the break pedal. The car would not turn off. After three minutes of attempting to turn off the car and waiting, I was finally able to successfully start the car. I was traveling with my four young children, three of them in child car seats. I was nearly rear ended by one vehicle, despite having my hazard flashers on, because my car stalled at a traffic light when it was green. Two cars drove around me who were also stopped behind me at the traffic light. Another car came up to the traffic light and my vehicle and nearly rear ended me with my four young children in the car. This is the third time that this exact issue has occurred in my car. I brought it to my local Honda dealership on the same day that the issue first occurred. They inspected it but were unable to replicate it. They said they would make note of it but had not heard of such an issue. I had no idea this could be reported on this website. I was never told about this otherwise I would have reported this on the day that each of the two previous incidents occurred. This issue originally occurred the first time approximately 10/2022 and again for the second time approximately 4/2023. It just occurred for the third time today, 7/14/0225.

After two months of sitting outside in the arizona sun, the transmission was replaced on my 2019 Honda Odyssey. A day after picking it up all of the sensors came on. I have been informed that it’s an internal failure with the adas camera that’s housed in the windshield. After a brief web search, this seems to be a common issue related to electrical issues with the car. Since the electrical was connected and disconnected during the transmission replacement begs to reason that there was something faulty about this camera that didn’t make its way through the reset.