Received several error messages with collision avoidance, braking, lane keeping, front collision avoidance. I took it into the dealership and they quoted me 3k to fix it. I had code DTC U3000-49 multipurpose camera unit/ millimeter wave radar internal failure. They could not explain why it would come back on and work for a while and indicated both systems have to be replaced because of their software. I took the vehicle to dealership two months earlier for loss of acceleration and engine not accelerating when pressing pedal. Alternator replace. Upon searching the internet, this seems to be a common issue with the Odyssey dating as far back as 5 years. My errors are the following: -ACC issue -LKAS issue -collision mitigation system -auto high beam problem. I am beyond frustrated because these are all safety related systems. A close friend and master mechanic believes that it is an electrical/ software and not a component issue since the components seem to be functioning at times. I am not sure why all of these systems are failing at once.

- Greer, SC, USA

Rear tailgate will occasionally pop open while driving for no reason. Often times when parked rear tailgate latch will not open it. Takes several attempts to get it open, sometimes have to open another door to get it to work.

- Goodyear, AZ, USA

My Honda odyssey 2019 started with issues turning all bunch of light in the dash, the brake system light, the road departure mitigation system light, keyless remote not working properly had to press 2 times to turn on or off, battery will drain and not work properly. The keyless fob will not unlock the car, the back sliding doors would not open at all. My car left me 2 times and I had to call geico for road assistance. I took it to the closest dealer to get it checked they tought it was the battery so we had warranty on it and they replaced it. They tought the problem was fix but again all lights came back again. This happened 3 times in the nissan dealer. This past month and a half I have being dealing with my vehicle. So this weekend we decided to take it to the Honda dealer that's 1hr away from my home, with all the lights on again, scare that she would turn off on the highway. No turn light signals working, no hazard lights working either. Finally today I got an answer from the dealer they said that the cars tailgate left side factory seal, that's like a rubber its falling off little by little and it messed up the computer that's next to the back left panel of the driver side. They say that this is wear but I have heard of too many vehicles being damage on the same spot and it starts with the tailgate. They want to charge me $673.89 to replace the tailgate control unit and that if that didn't fix the problem that I had to rewired the vehicle again and that was going to be be $4790.78. I would love to see Honda to do a recall on this, this is something that has to do with factory issue, I don't think owners should pay for something wrong they are doing while building this mini vans. I have warranty on the vehicle and they are saying that would not cover the repair because its a water damage. This keeps happening to almost all the Honda mini vans. Pls do the search and you will see many people complaining about it. Thank you!

- Lowgap, NC, USA

Sudden Loss of Acceleration/Unpredictable Acceleration: Pressed accelerator to enter highway from rolling stop going around 10-20mph. ZF 9-Speed transmission hesitated, attempted to downshift & vehicle suddenly lost transmission & possibly went into neutral and/or transmission failed on highway. Dashboard indicated Emissions System Problem" & "Transmission Problem" Vehicle would not shift back into gear & vehicle was subsequently towed. Prior to this event, vehicle had occasional 0.5 - 2 second hesitations when downshifting & exhibited rare occasional metal clanking sounds when downshifting beginning around 70,000 miles. Additionally. transmission had unpredictable significantly delayed shifts that resulted in subsequent surges of power that were enough to screech the tires on acceleration.

- Brick, NJ, USA

All safety systems which I had come to rely on failed all at once. Honda claims it-??s the multi function camera that just randomly went bad. This affects safe driving. Condition Is ongoing

- Raleigh, NC, USA

In early December 2023, while driving, I experienced a sudden malfunction in my LKAS system, receiving a notification that it had stopped working without any prior indications. In response, I promptly pulled over, turned off the vehicle, and restarted it, hoping to clear any error messages. Unfortunately, the issue persisted. Subsequently, I took my vehicle to the Honda service center, where I was informed that the front camera was malfunctioning, triggering multiple error messages such as collision system problems, auto high beam issues, and adaptive cruise control malfunctions-?"all of which rendered these safety features inoperable. The service center clarified that, while it was deemed safe to drive the vehicle, the automatic braking system and front camera features were unavailable, and any necessary repairs would be at my expense. The paperwork provided indicated the discovery of DTC U3000-49, citing a multipurpose camera unit/millimeter wave radar internal electronic failure. Additionally, beyond the LKAS system issue, I have repeatedly encountered difficulties with my vehicle's acceleration. Notably, there is a struggle to accelerate from a complete stop, and a significant delay in acceleration occurs when removing my foot from the gas pedal, especially in the middle of intersections. This delay has resulted in near collisions, with other vehicles honking and, at times, coming dangerously close to colliding with my vehicle. Despite reporting this ongoing acceleration problem to the dealer multiple times, the issue persists and has worsened over time. This comprehensive incident report aims to document and address the technical malfunctions in my vehicle, emphasizing the urgent need for a thorough examination and resolution of these safety concerns.

- Glendora, Ca, CA, USA

Over the years of owning this vehicle, we've encountered sporadic electrical problems that have led to the car either stalling or needing a jump start. Despite these issues, inspections of the battery have revealed no obvious problems. Additionally, we've had intermittent system warning messages for features such as Adaptive Cruise Control, Forward Collision Warning, and Lane Departure. These warnings have surfaced and vanished on multiple occasions. The vehicle has never been in an accident or experienced anything beyond normal operating conditions.

- Rancho Mission Viejo, CA, USA

A faulty body seam seal allowed rain to enter the body of the vehicle and infiltrate the power tailgate control module. On my vehicle, this produced the error message "Tailgate Problem". The tailgate would fail to open, open part way and then close, or attempt to open at random. There have been reports of tailgates opening while driving as a result of this problem. My dealer replaced the tailgate module and re-sealed the body seam where water was entering. This seam is where the top and side panels of the vehicle join near the driver's side tailgate hinge. This is a manufacturing defect in the body seam seal that is allowing this to happen. The problem has been extensively documented by vehicle owners at [XXX] This unsafe driving condition should be subject to a recall to prevent anyone's tailgate from opening unexpectedly while operating the vehicle, creating a hazardous condition for occupants or for other motorists who might be affected by items falling out of the rear tailgate. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Houston, TX, USA

Power tailgate began to malfunction first by opening slowly or not opening at all. Once open, would not close automatically. Would require a lot of manual force. Then, a "Power Tailgate Problem" error began to show on the dashboard. We took it to our local mechanic within about a week's time. They found the following 9 electrical codes: Power Tailgate Control Unit Internal Error Power Tailgate Right Touch / Pinch Sensor Circuit Malfunction Power Tailgate Left Touch / Pinch Sensor Circuit Malfunction Tailgate Closer Unit Half Latch Switch Circuit Malfunction Power Tailgate Sensor Pulse "A" Circuit Malfunction Power Tailgate Sensor Pulse "B" Circuit Malfunction Power Tailgate Drive Motor Circuit Malfunction Left Power Sliding Door Touch / Pinch Sensor Signal Error Left Power Sliding Door Touch / Pinch Sensor Signal Error They then found that the water was on/in the Power Liftgate Control Unit stemming from a leak somewhere in the body, probably around the D pillar. The Power Liftgate Control Unit will be replaced. The local mechanic recommended contacting Honda or a body shop to find the location where the water is entering the car.

- Oxford, PA, USA

Trunk is not properly sealed resulting in water getting into the trunk and corroding the tailgate control unit, this issue has been reported online hundreds of times. A week after my trunk flooded during heavy rain my car warning lights for the brake system, lane keep assist and several others lit up and wont work, the lights turn on and off intermittently - again this issue is being reported online by multiple owners. This is a known issue Honda refuses to acknowledge or resolve.

- Calabasas, CA, USA

Warning lights started being displayed stating that multiple vehicular functions were not working. (Vsa stability, emissions system, brake system, brake hold system, power steering problem) Upon inspection at the dealership I was told it was a fuel injector problem and it was not covered under the recall. The fuel injector is currently on back order and I have been waiting several weeks for a part. The estimate that was given to me was around $1200. I believe this should be covered by Honda

- Cullman, AL, USA

Power tailgate problem repeatedly flashed on dashboard but would disappear before it was legible and the car was beeping while driving. We stopped and tried to see what the problem was but it wasn-??t until we finally arrived home that it finally showed the full error on the screen. Apparently this drained the battery as well and we had to call AAA the following day to start the vehicle. They tested the battery which was only 2 years old (OEM battery died after only 2 years) and said it was fine. Drive around for 40 minutes and the next day it was dead again. Had it towed to the dealer who after much discussion agreed to replace the battery even though I read online about people having issues with water leaking onto the power tailgate module. The dealer told Me they had to replace the battery instead and the next day called to say that I was right, the battery replacement didn-??t solve it. And when they looked at the power tail get module it was indeed corroded from moisture. But they wanted an additional $500 so they could subcontract to an -??expert-?? who could seal that leak. I told them to only replace the module and asked why a recall hadn-??t been issued. They said this was beyond their pay grade. I told them I-??ll find a way to seal it myself.

- St Louis, MO, USA

Rear lift gate ceased operating, unlocking or opening. Later received errors on dash for blind spot malfunction and transmission error. Dealer says it is an issue with water leaking into the rear chassis getting into the exposed electronics.

- Germantown, MD, USA

On January 2, 2024 I was driving down the interstate the whole dash board electrical system went out and quit working.After a period of time it came back on. Started down the interstate again went out a second time. Afraid to drive it anywhere. Taking it to Lees Summit Honda in Lees Summit MO for them to check it. Thank goodness it was day light. I was really scared and almost wrecked the vehicle. I had my mother and my two young boys in the car.I also looked to see if there were any recalls and there were none.

- Independence, MO, USA

My power tailgate control unit is fried due to a leak in rear driver side.

- Tacoma, WA, USA

I am writing to express my deep concern regarding the significant reliability issues I have encountered with my 2019 Honda Odyssey. Unfortunately, these issues have led to inconveniences, unexpected expenses, and a reevaluation of my trust in the vehicle's long-term dependability. During the warranty period, the vehicle suffered from water infiltration in the trunk, resulting in flooding. Addressing this problem required multiple interventions by the dealership. Post-warranty, an electrical/electronic component related to the liftgate module malfunctioned, leading to an unforeseen repair that cost upwards of $800+. Subsequently, the vehicle experienced recurring starting problems, necessitating jump-starts on multiple occasions. Most recently, a complete failure to start occurred, requiring towing to the dealership, which unfortunately happened while away from home. Extensive diagnostics revealed the necessity to reprogram the BCM (Body Control Module) to resolve the issue. The repetitive and varied nature of these issues, especially for a four-year-old vehicle, raises concerns about the reliability and quality standards associated with the Honda Odyssey. These recurring inconveniences and unexpected expenses have compelled me to reconsider recommending this vehicle to friends and family. Of particular concern is the possibility of experiencing a breakdown in remote areas during extended trips. The prospect of being stranded with my family in such situations is troubling and potentially unsafe. Urgent attention to resolving these issues is crucial to avoid any untoward incidents for myself or other Odyssey owners. While I have raised my concerns with Honda, I am also contemplating sharing this experience with the NHTSA. The uncertainty surrounding potential future issues while driving has led me to consider selling this vehicle. I believe it's essential to document these concerns for the safety and awareness of others who might face similar situations.

- Frisco, TX, USA

airbag system (SRS) problem

- El Dorado Hills, CA, USA

Driving down the road and vehicle suddenly switches out of gear into neutral. Very dangerous situation. Another time we-??re driving at 45mph and the vehicle suddenly starts flashing 3 error codes and decelerating. We have to continue to drive 45 mph with the car sounding terrible all the way home. Once home the vehicle somehow resets itself and all of the flashing lights turn off.

- Acworth, GA, USA

multiple random times lifting foot from brake at intersection car lunges then completely dies. Car is stuck in street and battery light is on. Battery needs to be jumped to get working, battery and alternator test fine, replaced battery with agm battery three months ago and same thing happened today. Luckily tire store was at the intersection and they were able to jump it to get it going, they tested everything and no issues, they had no idea why it would happen.

- Atlanta, GA, USA

rear tailgate seal failure 2019 honda odyssey allowing water intrusion and corrosion of lift gate control module, per ft lauderdale honda dealer. Not a safety issue but a design defect per other honda owners.

- Fort Lauderdale, FL, USA