2020 HONDA ODYSSEY Complaints

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.

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.

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.

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.

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.

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

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 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 representative, police, or insurance) have occurred at this time. This appears to be a sudden mechanical failure of the rear coil spring with no apparent external cause (e.g., no prior impact, accident, or road debris). INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)