2020 Honda Odyssey complaints

While driving on 12/20/2024 the 2020 Honda Odyssey started showing 5 warning lights (ACC, LKAS, Collision Mitigation System Problem, Road Departure Mitigation System Problem, & Auto High-Beam Problem) on the dashboard, along with the “BRAKE SYSTEM” light. After these messages and light popped up, the cruise control would not work. The crash mitigation system would not work (automatic breaking). The lane assist would not work as well. All of these safety features would not work which posed a combined severe safety issue to my family while driving the van, and those around me on the highway. After parking the van, I Googled these messages and saw that not only was this an issue with my model of Odyssey, but with several of Honda’s vehicles which use the same Monocular Camera. After getting my battery checked to ensure there was no low voltage issue (to which there was non and the battery checked out okay), I took the van to a Honda dealership. The Honda dealership performed a “Express Service Multi-Point Inspection” diagnostic test and told me on 12/23/2024 that the Monocular Camera was defective, which controls all of the safety systems listed above. On 01/02/2025, the Honda dealership replaced the defective Monocular Camera, to which they charged me full price for the Monocular Camera part itself and the labor to put the Monocular Camera in the Odyssey. Once the repair occurred, ALL of the messages and lights on the dashboard have cleared and all of the safety systems mention

I am writing to report a significant safety issue with my 2020 Honda Odyssey. The Front Assembly Assist Monocular Camera (OEM part 36160-THR-C01-M1) has failed, causing the loss of several critical safety features, including auto high beam, lane departure warning, adaptive cruise control, collision mitigation, and Lane Keeping Assist System (LKAS). The local Honda dealership diagnosed the issue as an internal fault in the camera unit. Through research, I have discovered this failure is not an isolated incident. Numerous reports from other Odyssey owners highlight similar issues with the camera leading to the deactivation of these safety features. For example, discussions on the Honda Odyssey Forum and other online platforms describe widespread failures of front-camera-dependent systems, including lane-keeping and collision avoidance features. These failures compromise vehicle safety, potentially increasing the risk of accidents. The camera’s malfunction disables essential systems designed to enhance driver awareness and prevent collisions, leaving drivers vulnerable in critical situations. I respectfully request that the NHTSA investigate this issue, as the consistency of these reports suggests a systemic problem. A recall or corrective action may be necessary to ensure the safety and reliability of these vehicles. Thank you for your attention to this important matter.

After owning this vehicle for a little over a year without issues, I turned on the vehicle and randomly received the following five (5) error messages: Collision Mitigation System Problem, Lane Keeping Assist Problem (LKAS), Adaptive Cruise Control Problem (ACC), Road Departure Mitigation System Problem, and Auto High-Beam Problem. I realized that other Honda Odyssey owners have mentioned receiving the same error messages, especially around my year (2020). The believe all of the error messages are related to the same component - either faulty wiring, camera system, or install issue. The error messages come on every time I turn on the vehicle now. I live in Texas and the first day it occurred was especially hot - it first occurred in the summer months. It is now December with mild weather and the error messages still occur. It is worrisome because the Collision Mitigation System was among the safety features that contributed to us purchasing the vehicle.

The contact owns a 2020 Honda Odyssey. The contact stated that the back-over prevention camera and cross-traffic monitor were inoperable. The cross-traffic monitor not functioning message was displayed. The vehicle was taken to the local dealer, who confirmed that the vehicle had been repaired under NHTSA Campaign Number: 20V438000 (Back Over Prevention). The vehicle was not repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 34,000.

I have less than 35k miles on my car and I have 5 warning that appeared out of no where. My car has never been in an accident and I take care of it. I searched on YouTube and apparently this is very common issue. It cost $3500 to fix and needs to be with a dealer. The 5 warnings are Issue with car 1) Lane keep problem assist, 2)auto-high beam problem, 3) road departure mitigation system, 4)adaptive cruise control, 5) collision mitigation system, The car is 4 years old and should not have this problem but a lot of people who own the same exact model have tge same issue. Honda needs to do a recall and fix it for free

While driving on highway, 3 hours away from home, all of a sudden van slowed down and jerking and shaking with loud grinding movement sound from the van started. No warning sign displayed on the dashboard display screen and no warning alert either. Luckily got out of the exit and parked the van. Van was not going beyond first gear and jerking and shaking and making loud grinding sound. Van was not drivable safely. Towed to the local Honda dealership which was 30 miles away. Dealership checked the Van and diagnosed that the 10 speed Automatic transmission has failed and need a new transmission now. There is no warning sign or error on the dashboard display and any warning alert even after this incident happened. I am very disappointed that such an expensive van has no good warning sing or alert system for transmission failure, even though vehicle has computer to monitor every small thing but no good warning system for most expensive automatic Transmission system. This is total lack of care and failure on the part of manufacturer Honda, which did not put some good warning system on these defective automatic transmissions. These sudden failures can cause catastrophic accidents on the highways and roads. This sudden failure of transmission should have been a recall for defective manufacturing of 10 speed automatic transmission in Honda Odyssey van.

I just started up the car one morning and had multiple sensor warnings. Brought it to the Honda dealership and told it was an internal sensor camera malfunction and wanted $2000+ to fix it. This honestly should be a recall as I’ve had several other Honda owners complaining about the same thing which is a huge safety concern

All of a sudden warnings appear related to Collision Mitigation system Problem Lane Keeping Assist Problem Auto High Beam Problem Adaptive cruise control problem Road departure mitigation problem This is a major issue. I don’t feel safe driving this car with my family. Therefore NHTSA should get Honda to issue a recall for this vehicle given the magnitude and sheer scale of the problem. Below is one of many such forums where people who model years 2018-2020 have the exact same problem. https://www.odyclub.com/threads/lkas-acc-collision-avoidance-auto-high-beam-problem.373456/page-2?nested_view=1&sortby=oldest

There are five warning indicator on the dashboard complaining about Adaptive Cruise Control, Automatic Emergency Braking, Forward Collision Warning, Lane Departure Warning, and Lane Keeping Assistance. I took the car to the Honda dealership, and they acknowledged that they were due toan internal failure of the multipurpose camera.

The contact owns a 2020 Honda Odyssey. The contact stated that while driving at various speeds, the engine revved high while depressing the accelerator pedal. The contact then received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline), which was linked to the failure; however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The local dealer was contacted several times and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The failure mileage was unknow. Parts distribution disconnect.

Car was operating fine on the way to a game on 11/25/2024. Parked and went inside to watch game. After the game I went to my car and when I cranked it all the warnings below came on. **Auto High Beam problem **ACC problem **Brake System problem **LKAS problem those are the warnings I can remember. I immediately cut the car off and walked around to see if maybe I had been hit while parked cause something told me it could be a camera issue with the LKAS problem 🤷🏼‍♀️. I had not been hit. The car was fine and just as it was when I parked it. I cranked it again and the lights were still on showing problems and stayed on. I took it to the dealership and they said it's the multi-purpose camera malfunction/went out and needs new one.

The contact's wife owns a 2020 Honda Odyssey. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

The contact owns a 2020 Honda Odyssey. The contact stated that there was an abnormal knocking sound coming from the engine. The vehicle was taken to a local dealer where it was diagnosed. The contact was informed that the knocking sound coming from the engine became louder to take the vehicle back for inspection. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 3,000.

Several times over the last 18-24 months my van has 'stalled' after the auto engine start/stop feature restarts my car. This has mostly happened while at stop lights/signs, or idle. However, it has happened twice while driving, my car will just die and slow dramatically. I have been able to restart by pushing the start/engine button. There has been two times where restarting (while idle) has not worked. Most recently it happened while at a stop light. when the light turned green I went to accelerate and the van would not move, all the dash lit up, and there was no power to the engine. It took several minutes to get the van restarted, holding up traffic and causing me panic and fear that I could be hit.

The contact owns a 2020 Honda Odyssey. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

I have a 2020 Honda Odyssey and had it into the dealer for service. The battery needed to be replaced. I replaced the battery myself and had the below 5 error messages. 1-Lane departure 2-Aptive cruise control 3-Auto High beams 4-forward Collison 5-Lane keep assistant This is all failures due to the front camera monocular. This failure can cause auto accident due to it malfunctioning. This issue was discovered at a private dealer and a the car dealership. Per the dealer this is a known issue and very common issue. Honda needs to make this a warranty recall and issue

I was driving with cruise control on and a car pulled in front of me and hit the brakes. My car reacted by hitting the brakes hard and the engine tried to recover but hiccupped and lost power and engine light flashed at me. I pulled over and when I started the car again there was a rattle that would get faster if i pressed the throttle. I was able to get back on the road and the throttle rattle was still there and now it started saying engine oil low. I pulled over, checked dipstick and it was fine. Engine oil low light continued to flash, so I went to a oil change place to have them look and change the oil and they reported nothing wrong. I left and continued driving and the rattle noise was still there, engine oil low was still there. Then i heart a loud pop and griding noise, lost all power and had to pull over. This time the car was dead. I had it towed to a mechanic who said had to be an internal defect in the engine from the factory.

The contact owns a 2020 Honda Odyssey. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

Right sliding Door fails to fully open and fully close when entering or while driving , it's available for inspection, high safety concern while driving door may open 4 kids ride everyday. The problem shows everyday on the info center and BIPS showing malfunctioning , will showw 100% on the computer reading ,has not being inspected by Dealer Service Department yet, i have reported safety issue and descrived and officially reported to Honda Customer Service [XXX] case #[XXX] (Laura) on Oct-21-2024. Yes Warning lamps and messages of the problem showed few times at first and Now it shows constantly ,Sliding door can not be operated. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The multifunction camera which is responsible for ADAS features suddenly failed

The contact owns a 2020 Honda Odyssey. The contact stated while stopped at a traffic signal he was depressing the brake pedal to stop the vehicle, when the signal changed, and as he released the brake pedal, the vehicle was not turning on. The contact placed the vehicle in park (P) and restarted the engine. The contact stated that his vehicle is equipped with the Engine Off-On feature. The contact stated that the Off-On was also hesitating before he needed to place the vehicle into the park to restart. The contact stated no warning light was illuminated. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that a software update needed to be performed. The vehicle was repaired. The contact manually turned the feature off to prevent the failure from recurring. The manufacturer was not informed of the failure. The failure mileage was approximately 51,000.

MY GUAGE CONTROL WENT BLACK (It's the screen behind my steering wheel that tells me how many miles the car as, the odometer and speedometer (now don't know my speed!) and has maintenance info that is missing from my view now too! This is a serious safety issue! It also activates cruise control. They want to charge me $2K to replace it. The car is a 2020 with about 32K miles on it! And charged me a $180 diagnostic fee. Incidentally, the radio screen went black a few days later, but when I pressed the brightness button, it came back on. BTW, there is a little stick in front of the screen (maybe for the clock?) and it just spins and spins. Maybe that is simply broken and the brightness is turned down all the way? Though they stated the guage control needs to be replaced entirely. There is not a safety recall on this presently for my VIN and no software updates.

The navigation/ radio / rear view camera just resets multiple times while driving, sometimes it happens more frequently than other days. Message that comes up is: Network Communication Lost. Researched online and tried to resolve via software update but seems to made it worse. Reluctant to take to the dealer as warranty has expired and more importantly, blogs show that the issues have never been resolved even after dealer. Wiring harness replacement didn’t resolve.

Camera sensor fails from time to time and break system light come on. This is reported to happen on most Honda from 2018 to current model.

ACC system started giving errors, diagnostics ran at Honda pointed to multi function camera. System was quoted for replacement at 1500 this seems to be a big problem across these models. Please investigate.

This is the second time I’ve had to bring my car in. I have a variety of different warning signs popping up and I see that I’m not the only person that this is happened to when I look at Reddit online the malfunction is somewhere within the car system and it’s because of a windshield camera, which has nothing to do with the, warning signs that I am getting on my car. This needs to be recalled and fixed for free.

After any kind of weather event that produces water (rain, morning dew, snow melt), the car battery is dead the next morning. It jump starts the following day and will be drive normal until it sits overnight and the dew settles back in. There has been evidence of water leakage from the rear cargo door and the power door does not function. The only way to open the door is by removing the plastic cover and utilizing the mechanical lever on the inside of the door. The problem is a daily occurrence with dew and other water events. We have not gone to any automated carwashes, strictly handwash the car. No warning lights have been produced.

Sliding door stopped operating as a result of "badly torn inner bushings" which required the door motor and control arm to be replaced. This occurred just from normal use of the vehicle. At certain points, the opposite door also began to exhibit the same symptoms as the other. Furthermore, this problem did not just happen overnight, these components should be made part of a normal inspection just like the cabin air filter. Why is that inspected but the bushings of a sliding door are not? Could it be so the manufacturer or service department is hoping for these components to break so that it can gain business and work?

Shortly after purchasing my vehicle and replacing the battery, I received multiple dashboard warnings. I took it in to the dealership, and I was advised that the van's multipurpose camera located behind the rear view mirror needed to be replaced. I have researched this issue and this appears to be very common with the Honda Odysseys. The vehicle is less than 48 months old, and it's already an issue? Wondering if this can be logged so that it can be recalled.

The contact owns a 2020 Honda Odyssey. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline): however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

It seems our multi-purpose camera is malfunctioning and therefore causing all of the systems to go offline and light up on the dashboard when we turn on the car. It seems the only solution is to replace this. That seems insane that we should have to pay for this if this is a major safety feature of the car and one of the reasons we purchased the vehicle.

September 2024, i bought my car to the dealership to check multiple warning lights showed up on my dashboard. The dealer read the code and determine the multipurpose windshield camera had internal malfunction. The dealer told me that my multipurpose windshield camera need to be replace on my 60k mi 2020 Odyssey EX-L for ~$2.3k in Conshohocken PA. I had many of those sensor lights on (e. g. ACC, lane assist, collision mitigation) and saw many comments on a YouTube video (Honda Odyssey Warning Lights Bonanza Get Ready to PAY). Do my research online; seem like this happened a lot for the Honda Odyssey from year 2017 to year 2020 Hope NHTSA will investigate on this issue. It a very expensive fix for the vehicle barely break in. With all those safety feature disengage/malfunction at the same time, it is a very dangerous issue.

WHEN I BOUGHT THE VAN USED IN 2023 AT A DEALERSHIP, THEY WERE WORKING ON THE TAILGATE OF THE VAN. THEY STATED IT WAS A FACTORY DEFAULT THAT THE MODULE HAD. THEY DID NOT GO INTO FURTHER DETAIL. I STARTED GETTING A MESSAGE ON THE DASH PANEL THAT THE POWER TAILGATE SYSTEM HAD A PROBLEM. i ALSO GOT MESSAGES STATING THE THEE REVERSE COLLISION SYSTEM STOPPED WORKING, TRANSMISSION SYSTEM HAD PROBLEMS, THE KEYLESS STARTING SYSTEM PROBLEMS. THIS WAS HAPPENING AFTER A RAIN OCCURANCE. I TOOK IT TO THE HONDA DEALER, THEY DID NOT KNOW HOW TO FIX THIS. i TOOK IT TO MY MECHANIC AND HE FOUND WATER IS GETTING THRU THE ROOF RACK RAIL GULLEY, LEAKING DOWN THE BACK DRIVERS SIDE INTERIOR PANEL ON TO THE TAILGATE CONTROL MODULE. i HAVE TO TAKE THE VAN TO A BODY SHOP, SO THEY CAN FIX THE AFFECTED AREA. i HAVE THE PART MY MECHANIC REPLACED. IT IS CLEARLY WATER DAMAGED. THE DAY HE FIXED MY VAN, IT HAD RAINED AND MALFUNCTIONED AGAIN. RIGHT NOW I HAVE THE MODULE HANGING IN THE CARGO AREA, OUTSIDE OF THE INTERIOR PANEL, SO IT DOES NOT GET WET WHEN IT RAINS.

UNKNOWN. Auto engine idle stop was enabled when the vehicle was at a complete stop. Upon disengaging, the engine stalled and took a couple minutes to restart the vehicle. The vehicle was located in a highway that caused traffic delay and safety concerns. This has happened more than once.

This model has had a recall of the wire being to short and having faulty connections. I have replaced the wires module now 5 times . The last time it got replaced after a couple of months the screen on the car has gone blank and now they tell me the whole computer needs to be replaced. No LCD and no backup screen . This is absolutely ridiculous . Anything that can be done this car seems to be a electrical disaster.

My 2020 Honda Odyssey is exhibiting problems with the infotainment system. The system will reboot randomly, disabling all functionality of the rear back-up camera, the audio system, the clock, and all other associated features of the "infotainment" system. The screen will display "NETWORK CONNECTION LOST" and "MOST NET OFF" prior to unprompted reboot. System will reboot continuously following failure. Issue is ongoing for the past few months. This issue is the exact issue covered by the NHTSA Campaign Number: 20V439000. Possibly covered under 20V440000. Other 2020 Honda Odyssey vehicles are covered by this recall, however my VIN was not covered. I called Honda, and was not assisted in the slightest with the issue. I am requesting my VIN be added to the recall list, and/or Honda be penalized for improperly identifying vehicles with the affected issue. As it can prevent the rearview camera image from displaying, this vehicle fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) numbers 101, "Control and Displays" and 111, "Rearview Mirrors."

+ What component or system failed or malfunctioned, and is it available for inspection upon request? The front camera, which plays a crucial role in the functioning of the Lane Keep Assist System (LKAS), Adaptive Cruise Control (ACC), Collision Avoidance system, and Auto High Beam, malfunctioned. This camera is integral to these systems. +How was your safety or the safety of others put at risk? The malfunction of the front camera caused critical systems like LKAS, ACC, Collision Avoidance, and Auto High Beam to operate unpredictably. This compromised vehicle control, leading to unintended lane departures, unsafe following distances, and potential collision risks. The Auto High Beam system also failed to adjust correctly, creating visibility hazards for both myself and other drivers. +Has the problem been reproduced or confirmed by a dealer or independent service center? The issue has been confirmed by a dealer, front camera malfunctioned and need to be replaced for $2000.

Drove to grocery store, did not have any codes, when I got back in my car and restarted I received these 5 errors: Adaptive Cruise Control Auto High Beam Problem Lane Keeping Assist Problem Collision Mitigation System Problem Road Departure Mitigation System Problem

Rear door would not open with key fob, button on the dash or the button on the rear door. Then it randomly opened one morning and would not close. Through research I found out there is a problem with water leakage, the vehicle is not properly sealed. Resulting in a damage MICU. I was able to replace the MICU and the rear door works now. I believe this is a safety concern, how can I drive with the door not latching. When I unplugged the MICU water poured out and you can see rust in the fender well where the MICU sits.

The multicamera display unit is defective. It operates several systems and cause multiple warning issues. I believe the design is flawed. In addition to the warnings, both the display for driving information ( speed, rpm, temp, etc.) go blank and the AV unit (radio, entertainment, etc) shuts off too.

On multiple occasions, after stopping the vehicle (for example at a red light), the engine would stop and not restart. After several minutes of frantically trying to restart the vehicle in dangerous situations (stopped in the middle of traffic and nearly rear ended multiple times), the vehicle would eventually start the engine. Bottom line - when stopping at a stop sign or red light, the vehicle turns off the engine and does not restart properly - placing all occupants in a dangerous situation.

It won’t let me select all of the issues, but the entire list of the advanced driver assistance systems (ADAS) is wrong with my car

Started the vehicle on 7/3. Multiple warning lights show on my dashboard: 1. ACC problem 2. Collision Mitigation Problem 3. LKA Problem 4. Auto High Beam Problem I took it to Purrfect Auto (as I had just had work done). They claim it is a software issue (per Honda) and did a reset of the dashboard (I was not charged for this). Problem was fixed. Later that day when I started the car, the warning lights came back. About 4 out of 5 times I start the car, the warning lights return. I had a long road trip (8-hours) a week later. So when I started the car and the warning lights came back, I would turn off the car and open and close the door (to turn off the computer). After I turned off and on the car 3 or 4 more times, the warning lights weren't on, so we started our road trip. This is a safety issue because I am now used to 4 years of Lane Keeping Assistance and Collision Mitigation. For the first time in 4 years, I experienced *3* near collisions with other vehicles due to the failure of these systems. This issue was inspected by the mechanics at Purrfect Auto. There were no other warning lamps, messages, or other symptoms of the problem prior to this failure.

The contact owns a 2020 Honda Odyssey. The contact stated that while driving at an undisclosed speed, the vehicle inadvertently lost motive power. The contact was able to pull to the shoulder of the roadway, where the vehicle was able to restart. After restarting the vehicle, the vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to the dealer, who was unable to duplicate the failure. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline); the VIN was included, but parts were not yet available. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The failure mileage was 30,000. Parts distribution disconnect.

We hit a pot hole on a city street going 30-35 and it caused the airbags on both sides of the van to deploy. There was no damage to the van, rim, or tire. In addition, when the passenger airbag deployed my wife received a burn on her arm.

Front Camera failure resulted in failure of Adaptive Cruise Control Automatic Emergency Braking Blind Spot Warning Forward Collision Warning Lane Departure Warning Lane Keeping Assistance Parking Collision Warning Rear Cross Traffic Warning

It’s starting raining and the brake system light came on and hasn’t went off.

I was driving, and there was a car coming from the opposite direction in their own lane, and nowhere near my car, and the automatic braking slammed on the brakes. This was just the worst instance of it malfunctioing.

On 6-11-24 The warning lights cycle through Auto Highbeam problem Lane Keeping assist Adaptive Cruise Control Collision Mitigation System problem Road departure Mitigation System problem Earlier in the day I had maintenance at the dealership performed on my car: brake fluid , trans svc,new tires and alignment, oil change and rotate tires, ac filter change, air cleaner element replaced. I went back to dealer on 7-1 and was told it was a multi purpose camera failure. This had not previously occurred until immediately after the maintenance work was performed.

After the last recall I had corrected by Honds, I started having issues with my LKAS system. The following notifications started coming periodically and now they always come on every time i start my 2020 Honda Odyssey. Adaptive Cruise Control, Lane Keeping Assist, Collision Mitigation System, Road Departure Mitigation System, and Auto High-Beam. The local Honda dealership quoted $1400 for a new camera.