111 problems related to adaptive cruise control have been reported for the 2020 Honda Odyssey. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2020 Honda Odyssey based on all problems reported for the 2020 Odyssey.
Camera is faulty. Many owners report a similar problem.
On Sunday 9/28/2025 I started up my vehicle and received numerous error messages: collision mitigation braking system (cmbs) road departure mitigation system (rdm) lane keeping assist system (lkas) adaptive cruise control (acc) brake system light I contacted the dealership in which I purchased the vehicle and they did diagnostics. It came back that the front facing camera needs to be replaced. Which is a $2000 repair. After researching online this seems to be a common issue with years 2018-2020 Odysseys. This needs to be investigated and a recall issued from Honda USA for remedy as these error messages are concerning when they pop up repeatedly.
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 forward facing camera failed on my 2020 Odyssey with only 90,000 miles. Because of this failure, I am loosing all my forward facing safety features. This seems to be a common issue across many Honda vehicles and most users report being told the issue is being caused by overheating. Since users are being told this is a cause and effect issue, the manufacturer should address this at their expense. I first noticed this issue in mid September 2025.
For the last few days I turn on my car and get alert lights that I have problems with: the acc, lkas, collision mitigation, road departure mitigation systems and auto high beams. From online Honda forums I can see that many people have had these problems and it’s likely due to needing to have the windshield camera replaced. This is a 2020 model but I bought it new in 2021, so it is less than 5 years old and I’ve got 94k miles on it. Honda markets itself on its safety features, but nearly all of my safety features are not operating properly less than 5 years from the date of purchase, it’s a widespread issue, and Honda still has not issued a recall.
The multipurpose camera in mounted underneath the rearview mirror stopped working. No apparent reason for the malfunction to shut the vehicle off while filling gas and then five different warning lights occurred, including issues with lane keep assist, adaptive, cruise control, automatic, breaking, and several other safety features no explanation for the failure when that vehicle was taken to the dealer and currently being charged $2500 for a replacement of the camera and labor associated with the repair. My belief is that the system is malfunctioning due to overheating, which is a design issue associated with the vehicle and isn’t something that I should be responsible for.
Internal failure of the multipurpose camera/millimeter wave radar unit with code u300-49; available for inspection upon request. All safety features linked to multipurpose camera such as adaptive cruise control, lane keep assist, auto high beam, collision mitigation system, and road departure mitigation system are no longer functional. This problem has been confirmed at the local Honda dealership in addition to the numerous forum posts made by like Honda Odyssey owners with this same reoccurring issue. There were no warning symptoms or messages prior to failure.
The multipurpose camera unit has failed resulting in loss of adaptive cruise control, lane keep assist, automatic braking and other features related to the mcu. The dealer inspected the car and confirmed the issue was a bad camera. There are approximately 6 warnings when starting the car of features not working, and 3 lights that remain lit on the dash including "brake system".
The camera sensor is malfunctioning. It is affecting the collision sensor and lane assist sensor. Also adaptive cruise control, road mitigation and auto high beams. My vehicle is scheduled for diagnostics with a dealer, but seeing the many, many cases and videos online of the same problem, I am certain of the problem since it has been confirmed by others who have already paid for this costly repair. My warning lamps come on every time I start my vehicle. This is a definite safety issue since the issue is with the safety sensors.
When turning on vehicle the attached picture’s warning lights show on dashboard. Unable to reset them. Vehicles collision sensor not engaged when driving. Road departure will not activate when vehicle drifts of interstate lanes. Cruise control will not work at all. Brake system light will not reset even when brakes and fluids are good. With all these issues, vehicle safety devices don’t provide any safety. These could result in bodily injury and even death.
The front monocular camera is defective causing the safety features (adaptive cruise control, collision warning, lane shift warning, auto brights, auto braking) to not function at all. This seems to be a known issue with many Honda owners. The warnings show every time I start the van. This issue has been verified and the repair is costly.
For the past couple of weeks, every time I drive the car, I get a number of error messages regarding problems with the advanced driver assistance features. These include: "adaptive cruise control problem", "collision mitigation system problem", lane keeping assist problem", "road departure mitigation system problem", and "auto high-beam problem". A diagnostic check showed error u3000-49, namely "control module internal electronic failure". I took it to a shop, they ran diagnostics and told me I needed to replace the multifunction camera in the windshield. It seems to be a common problem and is very expensive to fix, at more than $2000.
All warning lights came on for adaptive cruise control, automatic emergency braking, forward collision warning, lane departure warning, and lane keeping assistance. Based on my research, it seems the forward facing camera has failed. The vehicle only has 37,000 miles on it and it is only 5 years old.
While driving, all at once several messages displayed, all of which are related to forward facing camera. Adaptive cruise control problem, collision mitigation system problem, road departure mitigation system problem, auto high beam disabled along with the brake system light turning on when I researched the internet, there are alot a people report this problem with the Honda forward facing camera witch supports the systems listed this failures. Talking to friends and neighbors they have had the same issues, it is about a $2000 fix to replace and recalibrate the camera link to user forum [xxx] most of the reported issues including mine are related to heat, the camera is in an enclosure located at the top center of the windshield. We just had heat indexes above 100 degrees. The camera is always hot to the touch. I also had this issue in the past put happened whole under warranty. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
All Honda sensing technology is not working and brake system indicator is on. Acc, lkas, collision mitigation, auto high beam, road departure. I read online that a lot of Honda Odyssey owners are experiencing same problem. It could be the front camera sensor. I have always had electrical problems with car. There crackling sounds when the radio or music is playing on the stereos.
Upon start up my 2020 Honda Odyssey ex-l throws a slew of pop-up’s on the dash (collision mitigation problem, auto high beam problem, adaptive cruise control problem, lane keep assist problem, road departure mitigation problem). It's been doing this for months, but when it started, I had just gotten an oil change 2 weeks prior and knew my mechanic would've caught this if it was something major. Last week I took it back in for another oil change and asked them to check these errors. They checked the battery and it’s fine (under 2 years old), but they confirmed it's the adaptive cruise control camera. They said not many places work on those cameras and I'll have to have the dealer do the repair. Well upon searching, it seems pretty consistent that this repair is costing owners $1700 because the camera has to be recalibrated with the software after it's replaced. I'm also seeing this problem appears to be widespread for Honda owners. Honda needs to do something to make this right for their customers. A $1700 repair for a camera that randomly dies by no fault of the owner is insane, and considering how many driver assistance systems to improve safety are affected, Honda should be held accountable. [xxx] [xxx] [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
The front multipurpose camera has failed “due to internal failure” according to the service tech at local Honda dealer. The camera functions - lane keeping assist, adaptive cruise control, front collision warning, and auto high beam lights, have not functioned for the past month. The windshield was replaced more than a year ago and no other incidents caused the failure, so it seems the camera itself is the issue. My van only has 63,868 miles on it.
The multipurpose camera that sits behind the windshield has completely failed, deactivating many automated safety features. The dealer quoted $2700. 00 to replace.
The adas front windshield camera failed on our 2020 Honda Odyssey. This vehicle is too new to have a failure like this and this is a very common issue that I have seen across all Honda Odysseys of same generation. Honda needs to be held accountable.
Multipurpose front windshield camera stops working and many safety features are affected by this camera. Lane departure warning is not working, lane keeping assistance not working, blind spot warning not working, brake system warnings. The vehicle has been inspected by the dealership and they confirm that the cause of all this problems is the multipurpose front windshield camera. There was no warnings at all when this happens.
Make: Honda Odyssey 2020 mileage at failure: ~40,000 miles incident description what component or system failed or malfunctioned, and is it available for inspection upon request? the front sensing camera system failed, which controls multiple driver-assistance features, including adaptive cruise control (acc), lane keeping assist system (lkas), lane departure mitigation, and collision mitigation braking system. When the issue occurred, all related dashboard warning lights illuminated simultaneously. The vehicle’s front camera module is still installed and can be made available for inspection upon request. How was your safety or the safety of others put at risk? when the camera malfunctioned, all driver-assistance and collision-avoidance systems were disabled without warning. This created a serious safety concern because the vehicle unexpectedly lost its lane-keeping, adaptive cruise control, and collision mitigation capabilities while in motion. It increased the risk of a crash, especially during highway driving or when relying on these systems for lane and speed control. Has the problem been reproduced or confirmed by a dealer or independent service center? yes. The Honda dealership confirmed the issue after diagnostic testing and stated that the front camera module had failed and must be replaced. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? the vehicle has been inspected by the authorized Honda dealership. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? yes. The dashboard displayed multiple warning messages, including: acc, lkas, collision mitigation, lane departure mitigation these warnings appeared suddenly at approximately 40,000 miles and have persisted since. The dealer quoted $2500 also I found numerous reports from other Honda owners experiencing the same camera-system failure at low millages.
Starting at 50,000, I began receiving six different warning signs every time I turn on my car: (1) collision mitigation problem, (2) auto high beam warning, (3) lane keeping assist problem, (4) road departure mitigation problem, (5) adaptive cruise control problem, and (6) brake system light stays on. Online forums show this is a pervasive problem with 2020-2021 Odysseys at around 50,000 miles. Took it dealer for diagnostic, paid $229, and told me it would cost $2,000+ to fix.
Windshield monocular camera has became faulty. No longer have adaptive cruise control, lane departure, forward collision braking. Looks like about a $1,500 expense to fix. Seems like a very common problem.
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.
Basically, numerous errors lite up the dashboard. But the car itself was running ok mechanically. I took it in for service and after a couple of non sensical diagnoses. It was determined to be the multipurpose camera in the windshield area. And they want two thousand dollars to fix it. I know most people purchased a vehicle like this in order not to encounter repair bills like this (that aren’t the engine). A simple and obsolete electric should be pretty simple to swap out.
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.
Font camera that control lane assist, cruise control, breaking, etc, stopped working less than 5 years old.
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.
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.