Warnings Problems of Honda Odyssey - part 1

Warning lights stay on for: adaptive cruise control problem (acc); auto high-beam problem (a); road departure mitigation system problem; collision mitigation system problem; lane keeping assist problem (lkas); brake system lights. Lights will not clear. Dealership diagnosed for replacing monocular camera on front windshield/mirror. Gary smith Honda replacement cost $2364 on 20jan2026.

See all problems of the 2019 Honda Odyssey 🔎.

Front camera is known to go out on these vans causing acc, lkas, collision mitigation, road departure mitigation system, auto high beam, transmission problems and more.

See all problems of the 2018 Honda Odyssey 🔎.

Went to pull into parking lot, adas system starting going crazy. Throws transmission malfunction error. Headlights won’t work - they turn on and off or go extremely dim. Van keeps jerking and losing power. Code reader showed u3000-49 electronic failure. Van drove normal, no issues until this code popped up. Issue started 01/08/2026.

See all problems of the 2020 Honda Odyssey 🔎.

After purchasing my 2020 Honda Odyssey ex-l in July 2025 (had approximately 58,000 miles), in January 2026 (current mileage approximately 66,000 miles), it suddenly displayed multiple indicators on the dash, including 'acc', 'lkas', 'brake system', 'auto high beam problem', and 'collision mitigation'. My local mechanic indicated the cause was the collision radar system, but it needed to be calibrated at a Honda dealership. My local Honda dealership indicated the problem code as 'u3000-49 internal camera malfunction', necessitating that the multi-purpose camera be replaced. The total repair cost was $2,104. 99. Online research shows that this is a common issue with this model year. If the cause is due to a camera malfunction or disrepair, and it impacts the safety of myself and others in the vehicle, why is this not considered a valid reason for a recall? I shouldn't be responsible for a costly repair that didn't result from any mechanical issue or mistreatment on my part. Because of the safety implications, this should be a Honda recall, and I should be reimbursed for the repair cost.

My multi-purpose camera system has gone bad after only 5 years. Collision mitigation, cruise control, brake system, lane keep assist, among other safety features are failing because of this.

In December, out of the blue suddenly had rotating list of warning on dash panel (lane keeping assist problem, collision mitigation system, departure mitigation system problem, auto high-beam problem, adaptive cruise control problem) plus brake warning system light is on constantly and brake hold not working. At first this was intermittent but now on constantly when starting and driving car. Only 55k miles on my Odyssey. Dealer said he had 3 of these in the last three months. Said it was multi purpose front camera failure. Cost over $1500. Since huge safety issue putting not only my family but other cars/people at risk, we are paying to repair, however we just found hundreds of people complaining about this same issue. This should be a Honda recall. We did nothing wrong to cause this safety issue and this part should not fail in 5 years. I don't have the final invoice yet but I can upload later if required.

The front right sensor goes off randomly. Sometimes all day long for days, then nothing for a week or 2 then back to it. Various lengths of time, usually stressfully long times, with nothing aroundcausing stress and making fucus hard. It started a few months after getting the van. We cleaned it, had the dealer inspect it and no one has ever figured out why we have to live with this blaring warning alarm. The dash says object warning with it and if I close that out nothing stops the alarm but putting it in park which I can't do on the interstate or in pickup line at school.

See all problems of the 2023 Honda Odyssey 🔎.

After researching I find it to be a sensor in the windshield is a common problem.

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. 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". This is the second time this issue has arise. The first time was replaced by the dealer under warranty.

While driving with my family, my vehicle experienced a sudden and total failure of the front-facing multi-purpose camera mounted behind the windshield. This component is the primary sensor for the Honda sensing suite. The failure caused multiple critical safety systems to become inoperative simultaneously, including the collision mitigation braking system (cmbs), lane keeping assist (lkas), and adaptive cruise control (acc). These systems are essential for crash avoidance and driver assistance.

On November 12, I was on the highway in the right lane, there was a car about 4 car lengths ahead of me in my lane and the car in the middle lane was quite a distance ahead. Just as I got in the middle lane, boom! the vehicle's cmbs malfunctioned and slammed on the brakes - no warning, visual or audible, just came to an abrupt stop. Thank goodness no one was behind me or I would have been dead. It was an instant whiplash effect as well and then as I was then merging back into the right lane to exit the highway, it did it again! there were no cars anywhere near me as I had slowed down due to the trauma from the first braking malfunction and all the cars were quite a distance ahead and thank goodness there were no cars behind me. Then on November 25, the same thing happened again. Driving down the highway, no cars near and boom! I am brought to an abrupt stop in the middle of the highway! the cmbs malfunctioned again in the middle of the highway. I took it to the dealer and conveniently there were no codes so they said there was nothing they could do. Someone needs to do something about this! to answer your questions 1) cmbs system is malfunctioning and has been for quite some time on Honda vehicles 2) if there would have been a vehicle behind me, I most likely would have been killed. If my dogs would have been in the van, they would have been injured. It gave me whiplash 3) I took it in and they did nothing until I complained, then they kept it a second day and drove it and said it didn't do it. But they weren't even going to do anything until I pushed the issue. This is a known issue with Honda as I found out after it happened to me. 4) the dealer 5) absolutely no warnings before it happened.

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.

Driving on the interstate with cruise control. All of a sudden the car braked (no one in front within eye shot) and cruise control stopped. I had to tap the brake manually then accelerator to get the car back under my control. Ever since then I get acc, lkas and other warnings when the car starts up. It seems like the front camera catastrophically failed while driving and almost caused the car to come to a complete stop on the interstate. It was very scary.

All the systems are not working this is a very low mileage vehicle and has not been involved in any accidents. They are many owners reporting the same issue. This is a safety issue as it shuts off many of the safety features of this vehicle while driving. Honda claims it’s normal.

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.

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.

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.

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.

I’m have had trouble with the infotainment center since less than 5,000 miles. Supposedly it was fixed during a recall. I still have issues with it. Shortly after the recall was done, I started having all kinds of dash lights come on. Transmission system problems, adaptive cruise control problems, lane assist problem, emergency breaking problems, forward collision problems, and so on. All together, they are about 7 different lights. The rear air/heat no longer work at all. Every so often, I crank it and the radio is black. Won’t work unless I restart the car. Auto headlights no longer work. Side mirrors no longer adjust. Sunroof will no longer open. Interior lights don’t work. Automatic doors and trunk lift do not work. I can’t even lock the van anymore. When I crank it, I have to hold the key fob on the ignition button and press 3 or more times before it cranks. Switch batteries in the key fob and still no different. I paid a lot of money for this van after never having one issue out of my 2014 Odyssey. The 2020 has been nothing but a nightmare since a month after I purchased it. I will never buy or recommend a Honda vehicle to anyone. In fact, I will discourage anyone who tells me they’re thinking about a Honda purchase. I am now stuck with a barely working vehicle because who can afford another car in this economy?.

Several months ago my wife was driving when the automatic brake system engaged when a car was turning in front of her. This engagement startled her and she felt the emergency braking was unnecessary considering the speed and distance the car was in front of her. This incident concerned her and made her lose confidence in the safety of the car. Then just recently we began encountering a almost consistent but sometimes intermittent brake system error along with multiple trouble notices about problems with road departure mitigation system, lane keep assist system, collision mitigation braking system, adaptive cruise control, etc. . When using the car. We received an error code u3000-49 reporting an internal electronic failure in the multipurpose camera unit. Online searches of this issue seem to be very common and concerning on how many are occurring considering this is a safety system. Our van has approximately 54,000 miles on it.

The forward-facing camera and/or radar unit failed one morning while running errands, resulting in 5 separate adas system failures. With these safety features not working, our safety and the safety of others is at risk. We took it to our dealer and were told we would have to pay a diagnostic fee of $205, even though they clearly already knew what the problem was- based on the multiple complaints through NHTSA and various other forums and websites from Odyssey and other Honda model owners and across multiple years. The problem was confirmed by the dealer and they quoted us $2025 and we're still not sure if that includes just the camera and/or the radar unit, which is another $600 part. Other dealers have quoted only $1200 to fix the exact same thing, with others charging more than double that. The 5 separate warning messages scroll across our screen repeatedly and are very distracting as you're driving. With multiple electrical issues already in recall status by Honda, this is another one that they should be taking responsibility for and not dumping this defective electrical repair on their customers. Who's to say that we won't be in this exact same predicament 3 or 5 years from now if the part or parts aren't fixed! definitely expect more from Honda. . . Very disappointed and feel betrayed by the inferior parts they're passing on as quality products.

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 sensor/computer/camera on the windshield overheats and causes it to fail mines at 100,000 and its a $1600 repair dealer said because the windshield sits in sun while driving etc and the sensor overheats and melts the inside of the computer soldering. Unacceptable so much for my safety features all gone I dont have the money to replace.

The multipurpose camera in the vehicle failed, causing multiple warning lights to come on related to the collision warning, blind spot warning, lane keep assist, lane departure warning, adaptive cruise control, and others. The dealership said it needed to be replaced, as it was no longer working and none of these features would work without replacement.

The front camera is malfunctioning, affecting all of my safety sensors.

I am submitting this complaint to report a serious and recurring safety issue with my Honda Odyssey involving the front monocular camera system. After stopping for fuel and restarting the vehicle, multiple warning messages and fault codes appeared on the dashboard simultaneously, including: -collision mitigation system problem -adaptive cruise control problem -lane keep assist problem -auto high beam problem these systems are all disabled due to a failure of the front monocular camera. This failure occurred without warning and immediately compromised several critical driver-assistance and safety features. Based on my research and discussions with other Honda Odyssey owners, this is a known and widespread issue. Honda is aware that the front monocular camera is prone to failure, and numerous owners have reported identical symptoms and error codes. Despite this, no recall has been issued. The required repair involves replacement and recalibration of the front camera and carries an estimated cost of approximately $1,500, which places a significant financial burden on owners for what appears to be a known defect. More importantly, the sudden loss of collision mitigation, lane assist, and adaptive cruise control presents a clear safety concern, especially when drivers rely on these systems during normal operation. Given the safety implications and the number of reported cases, I believe this issue warrants further investigation and a formal recall by Honda. Owners should not be responsible for the cost of repairing a known defect that disables critical safety systems. Thank you for your attention to this matter.

Front camera failure causes multiple safety issues. Lane keep assist collision mitigation road departure mitigation high beam problem this is a known issue and the dealership knew about this immediately hearing the multiple warning signs. Cost of replacement is over $2000.

I recently replaced a battery on the 2018 Honda Odyssey. When I turned the car on, the dashboard showed 6 issues: adaptive cruise control problem; lane keeping assist problem; collision mitigation system problem; road departure mitigation system problem; auto high beam problem; and the brake system light was on. I paid a mechanic to clear out the code and the was told that the front sensing camera needs to be replaced. Without a replacement, all these errors will continue to show up. I search online to find out if other people have had this issue because it was just too coincidental that a battery replacement broke the front camera. I found posts by many people who own the 2018 Honda Odyssey having similar or near identical issues that I have had. The cost to replace the camera and have it recalibrate it is going to cost $1,800. 00 as estimated by a local Honda dealer. The Honda dealer told me that they have seen this problem over and over again.

The multipurpose camera unit failed in my 2020 Honda Odyssey. This camera is responsible for enabling multiple advanced driver-assistance systems, including the collision mitigation braking system (cmbs), lane keeping assist system (lkas), road departure mitigation system (rdm), adaptive cruise control, and auto high beams. The component has not been replaced yet and is available for inspection upon request. The failure of the camera disabled multiple critical safety systems while the vehicle was in operation. These systems are designed to prevent lane departures, collisions, and unintentional road exits, especially at higher speeds. With the systems offline, I was at increased risk of collision or lane departure, particularly on highways or in low visibility conditions. This malfunction removed key layers of protection that the vehicle is designed to provide. The issue was confirmed by a Honda dealership on August 8th 2025, which diagnosed the problem as a failed multipurpose camera unit. They acknowledged that this malfunction disables all related safety systems. The vehicle was inspected by a certified Honda dealership technician, but not by police, insurance, or the manufacturer directly at this time. Multiple dashboard warning messages appeared simultaneously one day when starting the vehicle, including: "collision mitigation system problem" "road departure mitigation system problem" "lane keeping assist problem" "adaptive cruise control problem" "auto high-beam problem" these messages first appeared on or around the end of June 2025, and the systems were disabled immediately upon the failure.

Warning for lane keeping assist, adaptive cruise control, auto high beam, collision mitigation, and road departure all populated at once. The functionality does not work, even regular cruise control without the adaptive feature. There have been many reports of this issue with fixes upwards of $3,000. Appears to be a faulty camera. This is a safety issue and should be addressed and recalled.

My Honda Odyssey, after a hot summer day showed error codes related to the front camera. The adaptive cruise control problem (acc), auto high-beam (a); road departure mitigation system, collision/braking mitigation system; lane keeping assist problem (lkas) now are non-functional. Various internet users complain of the same issues without a conclusive source for the problem. It is either related to battery voltage or front-camera failure (possible due to heat/sun exposure). The 2020 vehicle was purchased used from dealer in 2024 where the battery was stated to have been replaced/new. Further, my vehicle has the infotainment package (tv/dvd) which has also previously drawn down the battery even after the car was shut off (I. E. , the electronics and/air conditioning are drawing too much battery and causing low voltages that impact the camera-based sensors). Multiple internet users complain of parasitic battery draw, fuses, poor oem batteries, and faulty behaviors with the camera system.

On June 23, 2025, while driving my wife to the rdu airport, our Odyssey's engine failed to restart after an auto idle stop (ais) at a busy intersection in greensboro. Instead of starting, the dashboard displayed a collision mitigation system problem alert, the drive ("d") indicator light started flashing, and then the dashboard displayed a "shifting to park: apply brake pedal" message. We were stranded at a busy stoplight, at the front of a dedicated left-turn lane, unable to drive or shift to park as instructed. The only way to resolve the issue was to hold the start/stop button for several seconds to shut the vehicle off. And the vehicles behind us had to swerve around us because our malfunctioning vehicle was blocking the lane. This problem has recurred semi-regularly since June 23, forcing us to manually disable the auto idle stop feature on every drive to prevent being stranded in traffic. An independent mechanic found no stored diagnostic codes but identified relevant Honda technical service bulletins (23-008 and 23-009) addressing similar ais failures. A Honda service center misdiagnosed the issue as a faulty battery, but subsequent testing by the independent shop confirmed the battery was in excellent working order. The actual auto idle stop malfunction remains undiagnosed. The vehicle and its auto idle stop system remain available for inspection. This issue appears to be part of the ongoing NHTSA engineering analysis ea25-004.

I had 5 warnings appeared in the dashboard : -adaptive cruise control problem -lane keeping assist problem -collision mitigation system problem -road departure mitigation system problem -auto high-beam problem and the amber brake system light came on permanently searched the problem on google and reddit found many Honda Odyssey owners having the same problem which is a safety issue some people took their vehicle to the dealership and have been told that the windshield camera is causing these warnings to appear because the camera is overheated by the sun, and the manufacturer did not make the camera well ventilated to dissipate heat caused by sun light.

Our Odyssey has had mounting concerns w/electrical system. These are safety issues. 10/20. Work done related to electrical system-rear camera having issues. Left/rt rear door wires were replaced due to recall. Software update completed. Gage control module software updated-know issue. 10/rear windshield wiper not functioning-electrical issue & pump malfunctioned. Idol stop was not properly working. The car would stall out at stoplights as lifting foot off the brake & attempting to accelerate. Battery was replaced at this time & the vehicle was only 3 years old-we were charged. Issues with our car are electrical related & are seeing many others with similar issues. 8/24-11/key fob batteries died. After batteries were changed, issues with the power windows began immediately. Windows would not going/up or down all the way and were sticking. Soon after they stopped working all together. Auto locks wouldn’t work & the gas tank latch had to manually open to fill the gas tank. Finally took the car in for diagnosis. Said the motor in the door was broken & needed to be replaced. We were not convinced that this was the real issue b/c the problem began immediately after the fob battery issue. Instead of new parts, the dealer glued pieces together & gave us a discounted price. This was & is a real safety concern especially knowing windows were altogether not functioning & we don't believe that it was properly addressed. 2/after snow/icy weather front passenger side windshield wiper dispenser/sprayer wasn’t working. Upon checking, discovered it had become dislodged. Adjusted the piece & reattached this piece into place. As soon as car was turned on ,right after reinserting the piece into place warning lights came on-all brake/lane mitigation lights. After diagnosis, said it was an issue with camera at windshield & the camera needed to be replaced. Odyssey groups state electrical issue are know and many w/2020 Odysseys. 5/25 issues are beginning again with idol stop.