Adaptive Cruise Control problems of the 2020 Honda Odyssey - part 2

Turned on the car. It was parked for 1 day after the last driving event with no issues. Today was 15 degrees hotter than yesterday. The following errors popped up on the dashboard: adaptive cruise control problem collision mitigation system problem lane keeping assist problem road departure mitigation system problem auto high beam problem all of the advanced safety features which utilize the front camera and sensors are deactivated. Car was turned off and restarted multiple times, windshield cleaned, and car cooled down, but the warnings remain each time. This specific issue has happened 5 times over the past year. The dealer was never able to replicate the issue as it would go away as soon as the car was restarted. This time, the warning lights would not go away.

Multiple warning lights: 1. Acc- adaptive cruise control 2. Lkas- lane keeping assist problem 3. Collision mitigation system problem 4. Road departure mitigation system problem 5. Auto high beam problem safety issues: with almost all of these not working the risk of avoiding a possible accident is greatly increased. An independent service center read errors for the can. No prior warnings, they just came up. I have replaced the battery and the issues were not resolved. An inspection is possible.

We have 2020 Honda Odyssey with 4500 miles and multi purpose camera quit working and Honda service center ran a scan and confirmed malfunction of camera and replacement costed over $1600. Internet tells me that many other similar vehicle have similar issue. It should be a recall and fixed free.

Out of nowhere I got a bunch of errors involving the addaptive cruise, lane keep assist, auto highbeams, collision avoidance, and the brake system light came on. The van has under 40k miles on it. From a quick search I can see that this is a very common issue.

Recently, my 2020 Honda Odyssey required a new battery replacement. Shortly after the battery was replaced, the front camera system failed unexpectedly. This failure has caused a complete loss of all safety features dependent on the front camera, including but not limited lane keep assist system (lkas) collision mitigation braking system (cmbs) adaptive cruise control (acc) road departure mitigation system (rdm) a diagnostic assessment revealed that the front camera system needs replacement with an estimated cost of $1,200. This issue arose without any previous physical damage to the camera or windshield and appears to be electronic or firmware related. According to Honda, this happens frequently when a battery is replaced. Context of vehicle history: this vehicle has already been subject to 11+ recalls, which have affected various major systems and components. The accumulation of defects and the continuing need for critical system repairs is deeply concerning, particularly for a relatively recent model known for its family-oriented safety features. Owner’s statement: given the number of recalls and now a costly camera system failure that directly affects key safety functions, I find this situation unacceptable for a vehicle of this age and mileage (72,000). The loss of these features significantly compromises driver and passenger safety. I believe this issue may be part of a broader reliability concern and request that Honda (or the responsible service entity) address this matter urgently and consider full or partial financial assistance for the repair.

Multiple warnings regarding adaptive cruise control, lane keep assist, and lane departure warning problems. Honda says it is the front multi-camera. The vehicle works fine intermittently, but doesn’t more often than not. Issue started to occur shortly after a wiring harness recall.

The front camera that controls adaptive system died within 4years of owning the vehicle so all the warning lights come on now.

The entire advanced driver assistance system failed. My vehicle has not been inspected. The entire adas does not work upon startup.

On 3/3/2025, the multipurpose camera started failing and I was seeing warning lights all tied to this system. Adaptive cruise control problem, collision mitigation system problem, road departure mitigation system problem, auto high-beam problem, and break system lights all came on. The problem was confirmed by the Honda dealership claiming there was an internal short that caused the issue. The component hasn't been inspected beyond this initial diagnosis. My family's safety is at risk with this malfunction in the event that we need assistance with breaking in an emergency situation, the vehicle can no longer take steps to prevent the car from drifting outside its lane and the high beams will no longer automatically turn off because the car can no longer sense oncoming traffic. Our insurance appraiser verified that this wasn't the cause of any collision, and the dealer has stated that this system should have lasted longer than expected.

The windshield camera malfunction caused a loss of all adaptive features include: lane keep assist, adaptive cruise control, regular cruise control, collision prevention, automatic emergency braking system, and automatic highbeam.

Front camera failure disabled adaptive cruise control, automatic emergency braking, lane departure warning, and lane keeping assistance.

We bought this van with a clean bill of health as far as accidents and single owner prior to us. The car had a documented maintenance history but after 5k miles of driving it the active cruise control began to through all kinds of errors. I researched this issue and find that many more Honda owners with active cruise control have the same issue. A few customers say that they had their front camera replaced and calibrated for a cost of about $1,600. 00 only to have the error show up again. I am writing this message to report that in my case I have found a work around. It’s not a permanent fix but points to Honda’s computer throwing a false positive error that is costing a great deal of money to Honda owners. On our van when this error happens, I force a diagnostic scan followed by a forced computer reboot and the warning lights are fixed an all equipment back to working. It’s horrible to read that Honda charges $1,600. 00 to replace perfectly good parts in all their line without taking the time to truly diagnose their issues with acc errors and do good to their customers. I hope this helps reach someone who can further investigate this issue with Hondas. In our family’s case we are lucky that I have an it background and was able to find a fix for this issue without any costs to our family financials and avoided paying Honda to replace perfectly working components due to their lack of knowledge of how their equipment works. [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

After driving for about a minute, there is a beep and the brake system warning light comes on. Then the dash begins cycling through multiple warning messages - lkas/acc/cmbs/rdm - and will not stop. Now the repair shop tells us that the front multipurpose camera adas needs to be removed and replaced, and the adas calibrated. Including the fee to diagnose the issue, total cost is $2,980. Van has about 56,500 miles. We have already had it towed twice for battery replacement following similar symptoms, and had battery replaced both times. But with the new battery only 3 months old, it became clear the issue was bigger.

Vehicle was acting normally, and unexpectedly 5 warning alarms came in concurrently all related to adas features, creating confusion for the driver. No other abnormalities were observed. Vehicle runs and drives normally. All the adas features are disabled and the warning lights continue to display every time the vehicle is driven. There is no way to disable the lights and the culprit of the alarms is a bad multipurpose camera behind the windshield. Honda wants around$1500 (parts and labor) to replace the camera. A quick search finds this a common complaint amongst Odyssey owners and a recall should be issued.

The camera is faulty and I've brought it in once early on and the dealer said a wire needed to be tightened. It happened again and they said no such loose wire this time. The code says camera needs to be replaced. I don't even have 100k miles on this car and it's going bad. Faulty part and I know this is happening a lot.

The windshield camera went out. I am now unable to use cruise control auto lights auto breaking.

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 mentioned above are now working correctly.

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.

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 * 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.

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.

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. . Read more...

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.

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.

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.

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.

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 infotainment system started blanking out and restarting while driving. This issue has started about 1 year ago to this date. It has occured on multiple occassions, we have brought it to Honda to get it repaired under warranty but they refused. The refusal was due to the fact that they could not "duplicate" the issue regardless of having video proof of the issue. The second issue is the multipurpose camera malfuncition. My vehicle is no longer under warranty and now I have to shell out $800 usd to fix this issue. All the lights have popped up on the dash. Both issue have not been adressed by Honda, they refuse to fix the issue with countless other electrical problems that this van has aquired over the short lifespan of this vehicle.

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.

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.

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.

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.

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.

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.

The front camera/sensor broke and is not covered under Honda’s warranty. This affects the adaptive cruise control, lane keeping assist, collision mitigation system, road departed mitigation, and auto high-beam.