2020 Honda Odyssey complaints

My son turned around in his second-row seat of our Honda Odyssey, causing the seat belt to cinch tightly around his waist. Even after the buckle was released, the seat belt continued to tighten instead of loosening. It became so tight that he could barely breathe, and we ultimately had to cut the seat belt to free him. There was no way to manually release or loosen the belt once it had locked. This presents a serious safety hazard. Seat belts should include an emergency release or override mechanism that allows a locked belt to be loosened during an entrapment situation.

The rear coil spring snapped with no warning. My safety was at risk because the spring broke and collapsed on the suspension while driving on a tollway. The bottom of the spring that was snapped off completely which presents a safety risk to others as it becomes a heavy sharp steel projectile flying into traffic. The problem has been confirmed by a service center and it is a large issue as the parts are extremely hard to source due to the frequency of these coil springs breaking in Honda Odysseys. They can’t make them fast enough to replace. They are not supposed to break and are not part of any scheduled maintenance. The component has been inspected by a Honda service center. There were no warning lamps or symptoms. The part broke suddenly and without warning.

-Left rear spring broke from normal use. -safety: dealership said van was unsafe to drive -part is on backorder from Honda with no estimated production date. In order to get van repaired a used spring out of a junked Odyssey was installed

Right sliding door warning alarm and at the same time flashing message on cluster. It has happened dozens of times since new. Sets a service code in computer and has been in at local Honda dealer twice and they found failure code in computer but cannot duplicate problem. I also learned part associated with code is on back order. Dealership charges us for diagnosing each time. When this alarm goes on, it makes you panic that the sliding door may open at any time or may not close.

Vehicle: 2020 Honda Odyssey VIN: [XXX] Mileage at time of failure: 155413 Component: Engine — Connecting Rod BearingsDescription: My 2020 Honda Odyssey experienced a failure of the connecting rod bearings on 7/30/26, resulting in loud knocking noise. The failure was diagnosed by Luis Asturias at Jim Coleman Honda in Clarksville, MD. This vehicle falls within the scope of NHTSA's open Preliminary Evaluation PE25008, which covers 2018-2020 Honda Odyssey vehicles with the 3.5L J35 V6 engine for this exact failure mode. My dealer declined to cover the repair cost under warranty because no recall has yet been issued. I am filing this complaint to document my experience as part of the ongoing federal investigation. Repair cost estimate: $4573.00. The vehicle is not driveable without this repair.Thank you for your prompt attention,[XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

At roughly 5,000 miles, this 2020 Honda Odyssey was brought into an authorized Honda dealership due to transmission concerns. The dealership service department improperly evaluated the 10 speed transmission, and diagnosed a 9 speed transmission system, assured me that what I was feeling was completely normal, and instructed me to only bring the vehicle back if the issue got worse. At approximately 60,000 miles, after experiencing a transmission slip, I immediately took the vehicle to an ASE Blue Seal Certified shop for a complete transmission service to ensure proper maintenance was performed by qualified technicians. At approximately 80,000 miles, while driving on a highway during a family trip, the transmission suffered a sudden, catastrophic failure, resulting in a total loss of motive power at speed. Losing all propulsion on a high-speed highway created a severe safety hazard for my family and surrounding traffic. The complete mechanical failure was subsequently confirmed by a service center, and the failed transmission assembly remains available for inspection upon request. Initial symptoms were presented directly to an authorized Honda dealer in Annapolis MD while under factory warranty and the vehicle was properly maintained by certified technicians thereafter, but the underlying defect went unaddressed until complete failure occurred on the road.

My vehicle is around 40,000 miles. The rear shocks have rusted, leaked, and collapsed. This seems to be due to a manufacturing defect. It makes driving long distances on uneven terrain very unsafe. A vehicle’s suspension should not fail this completely in such a short amount of time.

The electrical component is failing. I have brought in this vehicle 2 times for failed electrical issues over several years (around 2 years), and it only has 52,000 miles currently. The back up sensors no longer work, as well as warning lights for the following began to appear a year ago: collision mitigation, adaptive cruise control, lane keeping assist, road departure mitigation. Sometimes, our electrical side door will not close and will keep opening when trying to shut. This electrical issues has been draining our battery, and while driving, my car shut off in the middle of the street while I was waiting for a light. After a few attempts, I got my car started again. We replaced the battery, and a few days later the car would randomly turn on and I could not use an electrical key to open the car door. Only way to open it is with the physical key. The battery had to be unplugged in order to stop the car for randomly turning on. All electrical systems would turn on in the car, including the alarm and radio, even if the radio had been off when the car was last turned off. The car has been inspected by Honda mechanics, who told me the electrical component is dying, but they don't know why, the car isn't that old, and it has very few miles on it.

Dealership has not resolved the problem since they are waiting for parts

The following safety warnings were displayed on my 2020 Odyssey dashboard as early as January 2025: Road Departure Mitigation System Problem Auto High-Beam Problem Adaptive Cruise Control Problem Lane Keeping Assist Problem Collision Mitigation System Problem Currently, the warning messages are displayed continuously without fail upon starting/driving the vehicle. Per my diagnosis through my local Honda service, it is an internal failure with the front-facing camera associated with these safety features.

Adaptive cruise control, lane keep assist system problem, collision mitigation system problem, road departure mitigation system problem and auto high beam problem

I was leaving a parking lot when I heard a very loud bang. My vehicle then continued to make noises when going over bumps. I brought the van to a Honda dealership where it was identified both rear coil springs broke at the base and need replacement.

My SRS light went on without being in an accident. Around the same time I noticed that there was a recall reported (NHTSA Recall Number 26V-227) which states that the vehicle may deploy airbags without cause by going over a pothole etc. I took my vehicle in to the Honda dealership and they confirmed that my SRS ECU needs to be replaced bc it detected an airbag deployment but since it already deployed they will not replace it under the recall. However, the recall states that they need to update the SRS ECU to prevent this exact scenario from happening without proper cause and if it already happened the SRS ECU will need to be replaced. The worst part is, that they cleared the recall through the database for my vehicle but did not actually fix any issues and the SRS system is still not functioning. I already made a complaint with Honda corporation over two months ago but so far they have not provided a resolution.

Multiple sensors malfunctioned. Mechanic read code U3000-49 (Multipurpose camera unit/millimeter wave radar internal electronic failure). There was no collision or damage of any sort that led to this malfunction. The following systems no longer work: Adaptive Cruise control Collision mitigation system Lane keeping Assist Road departure mitigation system Blind spot info system Tire pressure monitor system Transmission system All of these failures started at exactly the same time. This severely compromises the ability to use this vehicle safely as these systems are all designed to prevent various safety hazards.

When vehicle is completely stopped at a traffic light there have been numerous occasions in which all electrical components fail and the vehicle turns off and fails to restart. This only occurs when the auto idle start is engaged. A few times I’ve had to completely jump the vehicle. I have replaced the battery and also had the car examined at the dealership. They stated they had previously updated the system, had heard of other instances of the same issue but since it wasn’t under recall and they couldn’t replicate the issue they couldn’t do anything. This has proved to be extremely dangerous because at rest, without being able to restart when the light turns green my family and I are at risk of being severely rear ended at high speeds.

I believe the forward facing camera is having electrical issues which is causing the vehicle not to engage lane departure, traction control, Lane keeping assistance, emergency braking, adaptive cruise control, AC intermittently blowing warm and cold. There are four or five lights on the dash about this.

The vehicle is a 2020 Honda Odyssey. A recurring and dangerous safety failure occurs involving the Auto Idle-Stop system. With the system enabled and the vehicle at a complete stop, the engine shuts off as designed. However, upon depressing the brake pedal to resume driving, the engine severely struggles to restart and completely fails. Simultaneously, the vehicle immediately and automatically shifts itself into PARK, and the entire dashboard display illuminates with all available warning icons and messages. This malfunction creates an immediate, high-risk safety hazard. When the incident occurs, I am trapped, locked in PARK, in live traffic lanes, sometimes at busy intersections or during left-hand turns. It is impossible to shift back into drive or quickly restart the engine. I am forced to remain stationary in traffic for multiple minutes until the system allows me to cycle the ignition completely OFF and then back ON to attempt a full restart and shift back into Drive. This leaves my vehicle, my passengers, and other drivers vulnerable to rear-end collisions.

On July 4, my vehicle suddenly shut down. The dash lit up and then the engine just died. This happened twice that day. And again multiple times on July 9. The battery was replaced recently.

All advanced driver safety features failed. It appears there is an issue with the front camera.

2020 Honda Odyssey EX-L, 49k miles, no prior collisions. 1. Faulty system: SRS airbag module, defective factory aluminum clip (official Honda recall defect). EDR data verified this component failure by dealer technicians. ​ 2. Safety risk: Driver airbag spontaneously deployed at 41MPH with zero impact. Seven occupants suffered soft tissue injuries and PTSD; sudden deployment created severe risk of secondary crash. ​ 3. Dealer confirmation: Bay Ridge Honda (Brooklyn NY) diagnosed and confirmed the airbag clip defect via EDR readout and physical teardown, filed service records for this issue. ​ 4. Inspectors reviewed vehicle: Honda dealer techs, EDR forensic specialists, and GEICO adjuster all inspected the car and confirmed no pre-crash damage. ​ 5. Pre-fault warnings: No SRS warning lights, error codes or abnormal electrical symptoms appeared before the airbag deployed unexpectedly.

Font camera that control lane assist, cruise control, breaking, etc, stopped working less than 5 years old

The monocular collision-avoidance camera 36160-THR-C01 has died on my 2020 Honda Odyssey EX-L. As a result, the following safety features have deactivated causing serious concerns for my safety on the road: ACC problem Collision Mitigation Problem Lake Keep Assist Problem Auto High Beam Problem The car is not even 6 years old and this $1000+ defective camera has rendered my car not up to safety standards.

I am the original owner of a 2020 Honda Odyssey Elite. On July 7, 2026, at approximately 76,127 miles, five safety-system warning messages suddenly appeared simultaneously upon startup: Adaptive Cruise Control Problem, Auto High Beam Problem, Road Departure Mitigation System Problem, Collision Mitigation System Problem, and Lane Keeping Assist System Problem. Restarting the vehicle several times did not clear the warnings. After the vehicle sat for approximately 30 minutes, the warnings disappeared. On July 8, after driving approximately 400 miles home, I parked the vehicle outside in approximately 110-degree heat. About two hours later, upon startup, the same five warnings reappeared simultaneously, along with the Brake System warning light. An authorized Honda dealer confirmed the multiple warnings and performed a DTC scan. Code U3000-49 was stored, indicating an internal failure of the multipurpose camera located behind the rearview mirror. Further testing confirmed that camera replacement was required. The dealer replaced and recalibrated the multipurpose camera at 76,567 miles. The repair cost was $1,631.80 for parts and $717.50 for labor, totaling $2,349.30. I am concerned that failure of a single internal camera component simultaneously disabled multiple driver-assistance and collision-avoidance safety systems. I believe NHTSA should investigate whether multipurpose camera failures associated with DTC U3000-49 represent a recurring safety defect in 2020 Honda Odyssey v

Multiple times the engine has totally shut down due to the auto idle stop system power loss. I have had the battery replaced a couple times and had the Honda dealership do the software update and I'm still having issues. This is a major safety issue as the car unexpectedly shuts down and takes a minute or so to get started again causing traffice backups.

The front-facing Honda Sensing camera in my 2020 Honda Odyssey overheated in a 90deg climate. This triggered multiple dashboard warning lights: Adaptive Cruise Control (ACC) Problem, Lane Keeping Assist System (LKAS) Problem, Road Departure Mitigation (RDM) System Problem, Collision Mitigation Braking System (CMBS) Problem, BRAKE System Problem, and Auto High-Beam Problem. The Honda dealership quoted me $1850 to fix it and they said it was a well-known error. There were NO issues with my car prior to this problem. I keep up with all routine maintenance, oil changes, timing belt and water pump replacements, etc. Not only are these safety features inoperable, but these warning lights are very distracting to the driver, but worse than that- I would be unaware of other system failures since I have so many warnings displayed.

Front camera default and required replacement totaling $2,400.00 in repair costs. This is a safety issue as the Adaptive Cruise Control, Front Collision Warning, Automatic Emergency Braking, and Lane Departure Warning were all disabled due to the front camera malfunction. This should be a recall by Honda as it seems to be a common mechanical failure in Honda Odysseys from 2018-2022.

Driving on the road and heard static noise from the infotainment system after an update. Few minutes later the dashboard had multiple warnings and disabling the entire Advanced Driver Assistance Systems (ADAS). The Honda dealer inspected the front camera in the top of the windshield and said it needed to be replaced.

While stopped at a traffic light my vehicle went into auto engine idle stop mode. When the light turned green, I removed my foot from the break, but the engine failed to restart. I had to shift the car to park and fully restart the engine.

On 5/28/26, I went to get my van checked at a repair shop through my HealthCar warranty and I was told that I needed a system update on my brake system/ADAS/LKAS/ACC systems. All the lights beeped and were lighting up on my dash. It would go on and off from time to time, usually when it was more hot out. They told me to take to dealership and they need to do a system update and should fix no additional charge. I took it to the Honda dealership service department on 7/6/26 and was told it is the multipurpose camera has an internal failure and it would cost me $2,443.00 to repair it, plus I had to pay them a diagnostic fee. I have researched and been told by other repairs shops that this problem has been occurring often and it seems due to heat is the reason this happens.

The forward facing ADAS camera has been reporting U0104 error. This resulted in many advanced safety features failing, including adaptive cruise control, automatic emergency braking, forward collision warning, and lane departure warnings. The problem was confirmed and repaired by a independent service center. The problem first appeared on June of 2026

The vehicle suddenly displayed warning signs for cruise control, lane assist, forward collision control and more on the dashboard. These features no longer work and warnings turn on every time we start the car and remain on the whole time.

My van is suddenly giving me warnings that include collision mitigation, road departure mitigation, adaptive cruise control, lane-keep assist, brake hold system, and traffic sign recognition. My safety is at risk if the front camera system is not working/faulty. I was unaware of the problem and had my cruise control on when it just went off and there were warnings popping up on dashboard. There was a class action lawsuit filed against Honda on 7/2/26 in CA for certain Honda vehicles. I have had my van put on a computer that has given us the error code and is a front camera failure. The issue first appeared on 7/2/26. It will suddenly start flashing warnings when I’m Driving. It will also flash warnings right after I start the vehicle.

I purchased my 2020 Honda Odyssey Brand new in California. On 6/27/2026 upon starting the vehicle up in the morning there was a myriad of warning messages that came up on the cluster for the first time out of the blue. The battery was replaced a few months ago with a new one and no MIL lights were illuminated prior to this morning. Now an amber BRAKE SYSTEM tell tail symbol is illuminated on the cluster. 1: Adaptive C.C. problem 2: Auto high beam problem 3: Collision mitigation braking system problem 4: Lane Keep Assist problem 5: Road depature mitigation problem The vehicle still is able to run and drive, but none of these standard vehicle safety features are working as expected. I can't even apply cruise control now. On each key cycle the error messages come back up, and when driving they also stay in the center of the cluster and make annoying dinging sounds. I disconnected the battery ground cable from the chassis for 15 min and reconnected, but the errors come back on instantly once the van is started up. With my OBD scanner, there is a code being set U0104-00. I have not paid yet to have the van inspected formally by the dealer.

The automatic engine shut off at stop doesn't always restart engine when moving again. This has happened several times where the engine doesn't restart after the engine shut off is engaged. This is the same issue as reported in NHTSA Action Number: EA25004

The rear coil spring (driver side) on my 2020 Honda Odyssey failed and broke while I was driving approximately 45 mph on a city street on XXX in [XXX]. The component that failed is the rear suspension coil spring. I do not have the broken spring in my possession, as it was replaced by the dealer. Due to the coil spring failure, the rear shock absorber on the driver side was also damaged and requires replacement. This sudden failure caused the rear of the vehicle to drop/sag on the driver side, which affected vehicle stability and handling. It put my safety and the safety of other road users at risk due to a loud noise and an abrupt change in ride height. This made the vehicle pull and feel unstable. I was able to maintain control and safely pull over, but the incident was alarming and could have led to loss of control or a crash under different conditions (e.g., higher speed or heavier traffic). A few days prior to the failure (approximately XXX), I noticed a weird/unusual sound from the rear of the vehicle. At the time, I did not associate it with a suspension issue, and there were no warning lamps, messages, or other clear symptoms. The problem has not been reproduced. The vehicle and component were inspected by a Honda dealer on XXX. The dealer confirmed that the driver-side rear coil spring had broken near the bottom and replaced it. They also noted that the rear shock absorber was damaged as a result and needs to be replaced. No other inspections (manufacturer representa

While traveling from Florida to our home in Pennsylvania in December 2022, we were on [XXX] and after going over a pothole, the side curtain airbag, and the driver seat side airbag inadvertently deployed. It was very traumatic and we are fortunate that we were able to pull off the side of the highway without getting hit by vehicles., The repair, which totaled over$16,000 was done by GERBER COLLISION AND GLASS Easton, PA. we personally are trying to recoup our out of pocket expenses of $781.08 from HONDA. And now, a month ago, May 2026,(almost 4 years after our incident) we received a SAFETY RECALL notification from explaining the exact issue we had.NHTSA Recall number26V227. we can provide photos and documentation, invoices, out of pocket expenses, etc if necessary but we have no idea how to include them on this form. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The auto Start/Stop feature doesn't work as needed. It will randomly lurch, turn the car off make me put it in park and then have me restart it. Sometimes the car does not start right away and I am stuck on the road until it decided when and if it will restart. Myself and my family of 5 are not stuck in the road scared of getting smashed into by other drivers unaware that we are stopped or anticipating for us not to be stopped in the middle of the road. I really dont want my family to go to the hospital or die because of this nonsense. Sometimes it doesn't fully shut off but will give error warnings like collision mitigation assistance even though there is nothing for it to mitigate. There are no cars around me and it shouldn't have done this. This has been happening for some time and only happens haphazardly meaning I can't always have the dealer identify or diagnose the issue. Then when I brought it to the dealer, they told me it was because of a power liftgate module error. Which was not true and didn't solve the issue.

The contact owns a 2020 Honda Odyssey. The contact stated that while reversing at an undisclosed speed, the vehicle stalled. No warning lights were illuminated. The vehicle was towed to a dealer where it was diagnosed and it was determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 59,000.

We took our vehicle in to Honda to repair the mirror recall and they were unable to repair it because they did not order the parts necessary to complete the work. All this despite us making an apt well in advance so they could be prepared. Upon picking up our vehicle, we were told “not to worry about it because if the mirrors haven’t fallen off by now, they probably won’t.”

I own a 2020 Honda Odyssey with approximately 73,000 miles that has experienced recurring infotainment and electrical system failures. The vehicle has undergone two prior repairs related to the Fakra connector issue, but the problem continues to occur. During the failure, the infotainment screen becomes inoperable, audio functions are affected, and the rearview backup camera becomes unavailable or unusable. The issue appears to be intermittent and is often triggered during or after rain. In addition to the infotainment failures, I have experienced key fob recognition issues requiring the key to be placed near the start button to start the vehicle. There is also static through the speakers, particularly when turning the steering wheel. The vehicle has been taken to a Honda dealership multiple times for this concern, and dealership personnel have witnessed the malfunction. Despite two previous repair attempts, the issue persists. Because the failure affects the operation of the rearview camera system, which is a critical safety feature, I am concerned about the safety of the vehicle and whether the prior repairs adequately addressed the underlying defect. I am submitting this complaint because numerous other Honda owners have reported similar recurring failures involving the infotainment system, Fakra connector repairs, backup camera operation, and related electrical concerns. I request that NHTSA investigate whether there is a broader defect affecting these vehicles and whethe

The high pressure fuel pump has failed on this vehicle. This is a known problem for vehicles between 2017 and 2020 and has not been adequately addressed by the corporation.

I am filing a complaint regarding recurring electrical and infotainment failures involving my 2020 Honda Odyssey EX-L. The vehicle experiences loud static and speaker distortion, infotainment system instability, static noises when turning the steering wheel, and intermittent key fob recognition issues requiring the key to sometimes be held near the start button. The issue appears to happen more often during or after rain or moisture exposure. The dealership has already repaired/replaced the FAKRA connector or related infotainment connector multiple times, yet the issue continues returning. The dealership recently witnessed the malfunction themselves and acknowledged the problem is still present. I am currently waiting for further direction from Honda technical support. This appears to be a widespread issue. There are many Reddit discussions and Honda owner Facebook groups where owners describe identical symptoms and repeated failed repairs. Some owners report having the same FAKRA connector replaced as many as six times with the issue still returning afterward. The repeated failure of the same repair raises concerns that the current remedy is ineffective and that there may be a larger electrical, wiring, grounding, or moisture intrusion issue involved. Because this problem continues after multiple repair attempts, I am requesting that NHTSA investigate recurring electrical and infotainment failures in Honda Odyssey vehicles and the repeated failure of the current repair solut

Our vehicle has stalled at stop lights several times over the past 6 years. The auto stop/start feature seems to fail. The vehicle will shut off but when you repeat the brake it will not restart and the vehicle will die completely. You have to put it in park, wait a few seconds and try and restart. Additionally it has completely died at gas station after turning it off to refuel. When you go to start the vehicle it will be completely dead, zero power. We had to have it jump started. The battery has been replaced twice and was testing normal at the dealership. Not a battery issue. Honda acts like this is unheard of but our own research indicates it is a common well known problem with new Odyssey models.

NHTSA Complaint Narrative – 2020 Honda Odyssey VIN: [XXX] Beginning in 2021, the vehicle experienced repeated starter and idle stop system failures, including: •delayed starting •failure to restart after idle stop •multiple warning lights •intermittent no start conditions •repeated battery failures The earliest documented complaint (Culver City Honda, March 25, 2021) states: “When using the auto start/stop feature the vehicle will have multiple warning lights. Sometimes will struggle to turn back on.” These symptoms continued for several years despite multiple dealer visits, battery replacements, electrical diagnostics, and software updates. In late 2025, the starter failed completely and required replacement at a cost of $1,890.25. The failure of the idle stop restart system poses a safety risk, as the vehicle may fail to restart in traffic after stopping at an intersection. Honda has refused to provide any written response regarding the issue. I am submitting this complaint so NHTSA is aware of the repeated failures and the potential safety implications. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Power tailgate won't stay open. It is a known issue (Honda service bulletin 22-018) and has tried to close while people are underneath - including my small children. I have knocked my head into it numerous times since the issue started. It almost always slowly closes, and sometimes it beeps a few times then closes automatically and if I'm under it I have to forcefully hold it open. A small child would not be able to.

The multipurpose camera unit /mil radar internal electric failure (DTC's U3000-49) caused the majority of the safety features lights to come on and eventually stalled out. This part has failed twice already.

Multipurpose camera is defective- broken after only 80,000 miles. No longer functions at all. No automatic emergency braking, no forward collision warning, no lane departure warning, no lane keeping assistance, no adaptive cruise control. Dangerous now without all those computer controlled safety functions. $2400 replacement. I don’t have $2400.

One morning randomly multiple warnings turned on on the dashboard of my 2020 honda odyssey . the following warnings turned on and have stayed on since: Adaptive Cruise Control Problem, Lane Keeping Assist Problem, Collision Mitigation System Problem, Road departure Mitigation Problem, Auto High-beam problem, and Brake System. This appears to be a common issue when searching online and appears to be a sensor issue.

Forward Camera Not Working. Because of camera defect the following safety features are not working Adaptive Cruise Control Automatic Emergency Breaking Forward Collision Warning Lane Departure Warning Automatic Head Lights

The ADAS system doesn't work. The forward collision system, adaptive speed control, and lane keeping assist have all shown malfunction errors and no longer work.