Adaptive Cruise Control Problems of Honda Odyssey - part 1

Several warnings lights appeared on the dash at the same time regarding the accident safety features including: adaptive cruise control, automatic emergency braking, forward collision warning, lane departure warning and lane keep assistance. None are currently working. The warning randomly appeared. It's associated with the camera behind the windshield and the radar detection behind the front emblem. Problem confirmed by dealer. Components have not been evaluated by anyone.

See all problems of the 2020 Honda Odyssey 🔎.

One light on dashboard lit up, started as "blind spot info system problem", light would go on and off for couple of years. Now every light on dashboard lights up, including lane assist, blind spot infor system problem, forward collision warning, adaptive cruise control problem, rear cross traffic warning, lane departure warning.

See all problems of the 2018 Honda Odyssey 🔎.

Started up the van and the following appears on the dash: acc problem collision mitigation problem lake keep assist problem auto high beam problem safety features unavailable when driving vehicle. In my research this issue has occurred with other owners of the vehicle as well.

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Honda Odyssey ex-l sport 2025 has been facing the issue of idle stop not working causing engine to stall, engine failing to restart, shutting off completely during mid traffic especially during adaptive cruise control operation. This is causing an unsafe driving situation. While this issue was reported to scott clark Honda multiple times and they have claimed to fix this issue in Aug 2025, the issue continues to exist and root cause hasn't been fixed. This seems to be related towards the on-going investigation by NHTSA. Please help to resolve at the earliest since no further support is being received from Honda.

After we took the car in all of a sudden randomly these warning lights will come on and my d for drive keeps flashing. Lkas, acc, collision avoidance, auto high beam problem and brake system warning. Sometimes some of them sometimes all of them. I read it’s a common problem but there hasn’t been a recall on it.

Several of my warning lights came on related to safety features such as brake assist, lane assist, collision mitigation. Brake warning. The source has been identified as a failure with the multipurpose camera unit.

Camera that controls acc lkas, lane departure, collision mitigation system, auto high bean, and braking system alerts kick out intermittently and fail to function while driving.

All of the alarm lights are going on at once, immediately when the car is turned on. This includes the collision mitigation system problem, adaptive cruise control system, lane keeping assist system (lkas), break system. I am told by my local garage that it is a Odyssey radar system failure, that probably originates in the camera or computer, but that they cannot fix it or get parts for it. It is unclear if these systems work or not.

Failed windshield monocular cameras, collision mitigation lka adaptive cruise lane departure mitigation auto high beam.

See all problems of the 2023 Honda Odyssey 🔎.

T approximately 105 000 miles, while driving my 2018 Honda Odyssey, multiple advanced driver assistance systems (adas) malfunctioned simultaneously. The following warning lights and messages appeared on the dashboard: lkas (lane keeping assist system) acc (adaptive cruise control) auto high-beam headlights collision mitigation braking system, road departure mitigation this occurred without any prior symptoms, and the systems have remained nonfunctional since the initial incident. I did not observe any physical damage, sensor obstruction, or weather-related cause at the time. The car was in regular use and had not recently undergone service or modification. Safety concern: these systems are critical to safe vehicle operation — especially at highway speeds — and are part of the vehicle’s integrated safety design. Their sudden failure without clear cause presents a serious safety concern for the driver, passengers, and others on the road. Troubleshooting / diagnosis so far: battery is original and may be aging, but the issue persisted after a jumpstart. No recent accidents or damage. Online research shows that many other 2018–2020 Odyssey owners have reported similar simultaneous system failures, which may indicate a pattern or a design flaw. Request for action: I respectfully request the following: that Honda investigate this incident and advise if it is part of a known issue or technical service bulletin (TSB). If applicable, provide warranty or goodwill coverage for diagnosis and repair. Consider this complaint as part of broader data regarding a potential system-wide electrical/software defect.

Observed repeatedly while operating at highway/interstate cruising speed, with adaptive cruise engaged: any changes in road texture - concrete to blacktop, between different types of blacktop or concrete, separation joints, etc - such as when crossing a bridge, crossing state lines, entering open-road toll plazas, etc - results in a sharp lifting of the throttle and at times will also automatically engage the brakes. This results in rapidly and unexpectedly cutting speed by 10-15 mph before automatically resuming set speed 1-2 seconds later. This has resulted in trailing vehicles to think I am brake-checking them or otherwise caused them to abruptly brake or swerve out from behind me. It also can cause driver and occupants in the Odyssey to lurch forward and back unexpectedly - which has had a residual affect of unintended input on the steering wheel, cascading into unintended direction change and amplifying vehicle instability issues already introduced by the sudden speed change. There are multiple other owners of 2018+ Odysseys on the forum [xxx] which have reported similar situations. I have tried to encourage them to register their observations here. I believe this issue poses a significant risk to the operator and occupants, as well as surrounding motorists. Rental/fleet vehicles with drivers who are otherwise unfamiliar with the issue would be at exceptional risk. I have experienced this issue numerous times as I live near & frequent highways and interstates with these types of road conditions nearby. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Something is wrong with the camera and causing all warnings to go off.

Mass safety system failure due to front projector camera/ wiring harness. Noted systems below failed: adaptive cruise control auto emergency braking forward collision warning lane departure warning lane keeping assistance auto high beams all above system are not operational.

Center camera has gone out. Millions of vans in the same position as me.

Please failure of windshield camera 36160 thr a11 has malfunctioned idas.

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.

Vehicle has code u3000-49 in the mcu module. All vehicle safety systems have shut down and are no longer working until vehicle is repaired (lane assist, collision mitigation, adaptive cruise control, road departure, etc. ) multiplex camera unit is on national back order with no eta available. Vehicle has 5 warning lights and multiple messages that keeping popping up on the cluster.

We began getting several warnings related to adaptive cruise control, collision detection, lane departure not working. This was due to the multipurpose camera internal failure. The camera had to be replaced by a authorized Honda dealer at a cost of $2,200. While the car was drivable no safety features related to the multipurpose camera were available. There were no indications of issues prior to the camera going bad. Due to the cost of replacement I would think that a large portion of drivers do not get the camera replaced and continue to drive the vehicle without use of the safety features provided.

The camera started malfunctioning and now I have a bunch of warning lights on the dash. I think is crazy that a lot of people have the same issue and still there is no recalls for it. Is a major safety issue.

Multipurpose camera failure, all advanced safety systems were affected (adaptive cruise, lane keep assist, blind spot warning, rear cross traffic warning, auto-dim headlights, etc) also, caused engine light, brake system and transmission system errors to appear but they were cleared by replacing the camera with no apparent damage to the actual systems. Replaced at a dealership for a total cost for parts and labor $2200+.

My 2019 Honda Odyssey ex-l has had sporadic errors happen: adaptive cruise control problem, lane keeping assist problem, collision mitigation system problem, road departure mitigation system problem, blind spot info system problem. These errors have shown up before sporadically and the dealer, dch Honda of oxnard was notified April 27, 2023. They could not replicate and did not respond in writing that something was wrong. The errors went away on their own. 3 weeks ago, the errors showed up again, this time also including a transmission system problem warning. The car was taken to Honda in valencia and they ran a diagnostic and recommended the transmission be replaced or they would give us $2500 for the car. We opted to have a well reputed private transmission mechanic replace the transmission. After doing so the errors are still there. The transmission system problem error even showed up sporadically the very same day we picked the car up. There is no rhyme or reason to these errors other than perhaps a faulty windshield camera, which takes 5 minutes to replace but Honda wants to charge $2k. We also experienced the delayed shifting due to the poor 9 speed transmission and vcm design. It was quite scary to have a car full of children making a left turn on a busy road and not have the car kick into gear but rather slip. Installing a vcm tuner to bypass the computer shifting helped as well as not driving the car in econ. Honda knows they made a bad car and while Honda pilots and other models have had recalls related to the transmission, I am atill waiting for NHTSA to take action and include my lemon Odyssey as well. Replacing the transmission cost me over $7k and it may not have been necessary in the end if in fact these errors were related to the camera.

I have 6 error lights on my dash board. Road departure mitigation system problem, auto high-beam problem, collision mitigation system problem, lane keeping assist problem, ada pat I’ve cruise control problem. My car was rear ended from an insured from utica national insurance group. After my car was rear ended these error message came up. They fixed the car but refused to fix to have the lights removed because they said that these error lights do not come on after a rear end accident.

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.

Front windshield camera failed and available for inspection if needed. All safety features tied to this camera are now disabled. Even basic cruise control is disabled. Problem has been check by a dealer with an estimated cost of $2600 to repair a simple camera module. Not inspected by police but was inspected by the manufactures dealer. I can get it inspected by the police if it helps. There are several warning lights that come up after starting the car. Even dinging when backing out of the driveway causing distractions. This is a known issue for this year Honda Odyssey van. There are lots of posts about it and how to try and fix it without the dealer charging you 10% of the cost of a 2025 model. For something designed for families this is not what I expected. This vehicles safety is impacted by the removal of these features.

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.

Front monocular camera failed for no particular reason. Very unsafe.

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 camera on top of the windshield and the radar behind the grill failed and the van has less then 12,000 miles! this is a well known issue. There is no obstruction. The area is clean and clear. Totally unacceptable.

See all problems of the 2024 Honda Odyssey 🔎.

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.

Multipurpose camera behind the front windshield was inspected by Honda dealership. They were able to verify it had a fault and needed to be replaced at a cost of around $1700. This camera controls many of the safety features this van advertises such as the the lane keep assist and collision mitigation. While researching online, I was able to find multiple owners of the 2018-2019 Honda Odyssey that have had this same issue. Ebay has recently sold 3 of these cameras that have been salvaged from donors. This is an ongoing issue that Honda has not rectified. I believe this should absolutely be recalled.

Unknown, though others who have reported this problem are saying the front camera and it's calibration are at fault. Currently, 5 systems (3 reported + 2 more) are under warning on my vehicle due to this unknown issue and the dealership wants a ridiculous amount of money to fix even though it appears to be very common and frequent as these vehicles get more and more miles on them.

The monocular camera installed in the front windshield over time going bad. It happen because in California always sun overheating the car when car is parked and it overheat camers components and it failed. Together the vehicle turned off pre collission avoidance system, automatic brake system, lane keeping system and etc. I have same issues on my 2021 Honda insight it goes bad even the vehicle is 3 years fresh.

The camera assembly monocular (part 36160-thr-a81) is shorted out causing multiple safety system failures from collision warning, lane departure, emergency braking, etc. Confirmed by local mechanic and then Honda dealer (merrillville, in). I still have the part, not yet replaced. Quoted $2k to replace. While driving multiple warning lamps went off and cruise control disengaged. No signs of issues prior to this occurrence. Now none of the safety features related to the adas system work.

My Honda Odyssey does phantom braking once in a while. There are no vehicle in front of it but it still brakes. One time it brake till full stop from 40 miles per hour.