2020 Honda Accord FORWARD COLLISION AVOIDANCE

On Thursday February 5th 2026 I was driving on route 42 at 1014pm going 60mph and my automatic break light came on and beeped as I was driving down the highway. There was nothing in front of me.

February 13th at 1256am my emergency break light flashed on my dashboard and beep for me to break but there was nothing in front of me. I was going 60mph on route 42. Roads were clear and there was no traffic.

- Component/System failure/malfunction: ADAS. Specifically, CMBS and/or ACC. - My car has repeatedly experienced unexpected braking events, rapidly bringing me to nearly a complete stop in the highway. During this time, I have no ability to control the speed of my vehicle. This has been occurring during my ~70 mile commute on I-675, I-75, and I-275. - Despite having the car on multiple occasions and for over a week collectively, the issue has not been replicated by the dealer. - The vehicle has not been inspected by the manufacturer, police, insurance representatives, or others to date. The Honda dealer has not initiated any further inspection. - During these failures, the car has (often) been braking without due reason or any alert to the driver. No system malfunction was found (either shown to driver or in computer log, as verified by dealer). Please review attached document for further details regarding the incident(s). This copy has been presented to Honda and the Ohio Attorney General.

The contact owns a 2020 Honda Accord. The contact stated that while driving at various speeds, the Automatic Emergency Braking System erroneously activated, causing the vehicle to abruptly stop in the middle of the road. The vehicle was taken to the local dealer, who was unable to determine the cause of the failure, and the vehicle was not repaired. The contact stated that the failure had occurred on several occasions. The manufacturer was not contacted. The contact was informed of NHTSA Action Number: EA24002 (FORWARD COLLISION AVOIDANCE); and related the failure to NHTSA Action Number. The failure mileage was unknown. The VIN was not available.

It is uncertain which specific system/systems have failed/malfunctioned at this point. Despite frequent and consistent communication with Honda, no real attempt has been made to uncover the cause of this issue, and no solution has been provided. The vehicle has been, and is, available for inspection upon request. This is the 2nd occurrence since the first event on 21 April 2025. This occurred on the interstate. During this event, the vehicle's forward collision warning triggered an audible and visual alert that could not be shut off. This led to a very near miss as traffic was rapidly approaching the rear of my vehicle. At the time of the incident, I was in the left lane. Traffic was very light. The weather was dark and dry. CMBS was on. ACC was off. LKAS was on. RDM was on. Problem has not yet been reproduced but dealer has verbally indicated that they get frequent complaints about the system. This includes one employee who has experienced this on his personal vehicle. Many DTCs have been recovered from the vehicle’s log. Manufacturer: Yes, vehicle has spent 30 days, to date, in custody of Honda Police: Not yet. Will do immediately if advised Insurance Representatives: Not yet. Will do immediately if advised Others: No. Any work on the vehicle performed outside of Honda East Cincinnati will void the warranty Visual and audible alerts were present before, during, or after the event

It is uncertain which specific system/systems have failed/malfunctioned at this point. Despite frequent and consistent communication with Honda, no real attempt has been made to uncover the cause of this issue, and no solution has been provided. The vehicle has been, and is, available for inspection upon request. This is the 3rd occurrence since the first event on 21 April 2025. This occurred on the interstate. During this event, the vehicle rapidly decelerated from 70 mph to 65 mph without the ability of the driver to intervene or take back control of the vehicle. This led to a very near miss as traffic was rapidly approaching the rear of my vehicle. At the time of the incident, I was in the right middle lane. Traffic was light. The weather was clear and dry. CMBS was on. ACC was off. Problem has not yet been reproduced but dealer has verbally indicated that they get frequent complaints about the system. This includes one employee who has experienced this on his personal vehicle. Many DTCs have been recovered from the vehicle’s log. Manufacturer: Yes, vehicle has spent 30 days, to date, in custody of Honda Police: Not yet. Will do immediately if advised Insurance Representatives: Not yet. Will do immediately if advised Others: No. Any work on the vehicle performed outside of Honda East Cincinnati will void the warranty No warning or alert (audible or visual) lights were present before, during, or after the event

It is uncertain which specific system/systems have failed/malfunctioned at this point. Despite frequent and consistent communication with Honda, no real attempt has been made to uncover the cause of this issue, and no solution has been provided. The vehicle has been, and is, available for inspection upon request. This is the 6th occurrence since the first event on 21 April 2025. This occurred on the interstate. During this event, the vehicle rapidly decelerated from 45 mph to 30 mph without the ability of the driver to intervene or take back control of the vehicle. This led to a very near miss as traffic was rapidly approaching the rear of my vehicle. At the time of the incident (5:52 pm), I was in the left lane. Traffic was moderate. The weather was rainy and wet. CMBS was OFF. ACC was OFF. Problem has not yet been reproduced but dealer has verbally indicated that they get frequent complaints about the system. This includes one employee who has experienced this on his personal vehicle. Many DTCs have been recovered from the vehicle’s log. Manufacturer: Yes, vehicle has spent 30 days, to date, in custody of Honda Police: Not yet. Will do immediately if advised Insurance Representatives: Not yet. Will do immediately if advised Others: No. Any work on the vehicle performed outside of Honda East Cincinnati will void the warranty No warning or alert (audible or visual) lights were present before, during, or after the event

It is uncertain which specific system/systems have failed/malfunctioned at this point. Despite frequent and consistent communication with Honda, no real attempt has been made to uncover the cause of this issue, and no solution has been provided. The vehicle has been, and is, available for inspection upon request. This is the 5th occurrence since the first event on 21 April 2025. This occurred on the interstate. During this event, the vehicle rapidly decelerated from 65 mph to 25 mph without the ability of the driver to intervene or take back control of the vehicle. This led to a very near miss as traffic was rapidly approaching the rear of my vehicle. At the time of the incident (8:12 AM), I was in the left lane. Traffic was light. The weather was rainy and wet. CMBS was on. ACC was off. This very nearly resulted in total loss of control of the vehicle. Problem has not yet been reproduced but dealer has verbally indicated that they get frequent complaints about the system. This includes one employee who has experienced this on his personal vehicle. Many DTCs have been recovered from the vehicle’s log. Manufacturer: Yes, vehicle has spent 30 days, to date, in custody of Honda Police: Not yet. Will do immediately if advised Insurance Representatives: Not yet. Will do immediately if advised Others: No. Any work on the vehicle performed outside of Honda East Cincinnati will void the warranty No warning or alert (audible or visual) lights were present before, during, or after the event

It is uncertain which specific system/systems have failed/malfunctioned at this point. Despite frequent and consistent communication with Honda, no real attempt has been made to uncover the cause of this issue, and no solution has been provided. The vehicle has been, and is, available for inspection upon request. This is the 1st occurrence since the first event on 21 April 2025. This occurred on the interstate. During this event, the vehicle rapidly decelerated from 75 mph to 20 mph without the ability of the driver to intervene or take back control of the vehicle. This led to a very near miss as traffic was rapidly approaching the rear of my vehicle. At the time of the incident (5:10 pm), I was in the left lane. Traffic was moderate. The weather was clear and dry. CMBS was on. ACC was (status unknown). LKAS was on. RDM was on. Problem has not yet been reproduced but dealer has verbally indicated that they get frequent complaints about the system. This includes one employee who has experienced this on his personal vehicle. Many DTCs have been recovered from the vehicle’s log. Manufacturer: Yes, vehicle has spent 30 days, to date, in custody of Honda Police: Not yet. Will do immediately if advised Insurance Representatives: Not yet. Will do immediately if advised Others: No. Any work on the vehicle performed outside of Honda East Cincinnati will void the warranty No warning or alert (audible or visual) lights were present before, during, or after the event

It is uncertain which specific system/systems have failed/malfunctioned at this point. Despite frequent and consistent communication with Honda, no real attempt has been made to uncover the cause of this issue, and no solution has been provided. The vehicle has been, and is, available for inspection upon request. This is the 7th occurrence since the first event on 21 April 2025. This occurred on the interstate. During this event, the vehicle rapidly decelerated from 70 mph to 60 mph without the ability of the driver to intervene or take back control of the vehicle. This led to a very near miss as traffic was rapidly approaching the rear of my vehicle. At the time of the incident (6:21 PM), I was in the right lane. Traffic was heavy. The weather was overcast and dry in tire path. CMBS was OFF. ACC was OFF. Problem has not yet been reproduced but dealer has verbally indicated that they get frequent complaints about the system. This includes one employee who has experienced this on his personal vehicle. Many DTCs have been recovered from the vehicle’s log. Manufacturer: Yes, vehicle has spent 30 days, to date, in custody of Honda Police: Not yet. Will do immediately if advised Insurance Representatives: Not yet. Will do immediately if advised Others: No. Any work on the vehicle performed outside of Honda East Cincinnati will void the warranty No warning or alert (audible or visual) lights were present before, during, or after the event

It is uncertain which specific system/systems have failed/malfunctioned at this point. Despite frequent and consistent communication with Honda, no real attempt has been made to uncover the cause of this issue, and no solution has been provided. The vehicle has been, and is, available for inspection upon request. This is the 4th occurrence since the first event on 21 April 2025. This occurred on the interstate. During this event, the vehicle rapidly decelerated from 70 mph to 55 mph without the ability of the driver to intervene or take back control of the vehicle. This led to a very near miss as traffic was rapidly approaching the rear of my vehicle. At the time of the incident (8:09 am), I was in the right lane. Traffic was very light. The weather was overcast but dry. CMBS was on. ACC was on. Problem has not yet been reproduced but dealer has verbally indicated that they get frequent complaints about the system. This includes one employee who has experienced this on his personal vehicle. Many DTCs have been recovered from the vehicle’s log. Manufacturer: Yes, vehicle has spent 30 days, to date, in custody of Honda Police: Not yet. Will do immediately if advised Insurance Representatives: Not yet. Will do immediately if advised Others: No. Any work on the vehicle performed outside of Honda East Cincinnati will void the warranty No warning or alert (audible or visual) lights were present before, during, or after the event

On December 4 at 8:57pm I was driving on interstate 295 doing 60 miles an hour and my car’s warning light for breaking came up for me to break like something was in front of me even though there wasn’t, this is a continuing thing going on. I reported every time it happens.

On July 30, 2025, my Honda’s Collision Mitigation Braking System (CMBS) randomly activated without any obstacles in front of the vehicle. Since then, this issue has happened numerous times while driving. When the incident occurs, the system flashes a “Brake” warning and suddenly applies the brakes while I am driving. This creates a serious risk of a rear-end collision, loss of control, or bodily harm. I had the vehicle inspected by an authorized Honda dealership on August 1, 2025 for this issue. Despite the inspection, the malfunction continues to occur. Although I have not yet been involved in an accident, this defect poses an ongoing safety hazard for myself, passengers, and others on the road. I request that NHTSA investigate this matter.

CMBS not working properly. The car automatically brakes without any collision risk even on a clear road with no traffic and clear weather. Have a huge risk of someone crashing the car from the rear due to immediate braking. This issue has appeared several times.

False alarms (several hundred) with audio and visual warnings but no braking. ONE instance of false alarm WITH emergency braking from 55mph to under 30mph. I do not recall a false warning happening after sundown, ever. Alarms have occurred on bright days with sharp shadows, and overcast with no shadows. There always seems to be a solid overhead object being approached, overpass, railway trestle, solid bar supporting a traffic light. This is highly intermittent where alarms occurred 3 in a week, to 1 in a span of two months. The two constants I have noted are it happens during daylight hours and a substantial overhead object or structure is being approached. Alarms have been occurring since 2021 when i bought the car new off the lot.

The Honda Collision Mitigation Braking System (CMBS) will randomly activate without any obstacles in front of the vehicle. Consequently, increasing the risk for car accidents, loss of control, and bodily harm. The car has not been inspected by a dealer or certified mechanic for this problem. However, the vehicle is available for inspection and repair as needed. While the incident occurs, the CMBS warning system will flash ‘Brake’.

While I am driving I have experienced incidents where the (Automatic Brake System) AEB system engages unexpectedly, causing the car to brake hard without any obstruction or vehicle in front of me. This incident have happened on both highways and main roads. When my car unexpectedly breaks, sometimes I get a warning That Says Brake then the car Beeps and sometimes It won’t give a warning. Today when it happened it only braked once but like I said it happens unexpectedly. (2020 Honda Accord Sport 1.5lt)

The car's automatic emergency breaking activates randomly when there are no objects in front of it. This is very dangerous as the car is often driving full speed when this happens. I have found that this happens most often when I am driving under something, like an overpass.

What component or system failed or malfunctioned, and is it available for inspection upon request? The Automatic Emergency Braking system engaged without any vehicle or person in front of my car. I was driving at about 40 mph and the brakes slammed on and then after a few seconds released How was your safety or the safety of others put at risk? If a vehicle was directly behind me, they could have slammed into my car. No car was at the time this happened. Has the problem been reproduced or confirmed by a dealer or independent service center? No, I haven't taken it in yet. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Not yet. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? The BRAKE light came on on the dashboard when it occurred.

On [XXX] I took my elderly mother to physical therapy and the car began to randomly brake although there were no vehicles in front of me. The braking light flashed and then car brakes on its own. A week later I was driving approximately 55 mph on a major highway and the car started braking again but without the warning light. Again, there were no cars anywhere around me. The next day I went to the Honda dealership in Covington, LA because I am very concerned this will happen again unexpectedly when there are cars around me and it will result in a bad accident injuring myself or others. I was told he can keep my car all day but he said they probably could not recreate the issue so its just a waste of time. He said nothing he can do about it. That's just how it is and maybe it was from a bug passing the sensor. I know have to remember to turn off the feature every time I drive because I am terrified that it will randomly brake again and it may cause a serious accident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The automatic emergency braking system malfunctioned on 7/18/24. I was driving approx. 20 mph on a local road and there was no vehicle, pedestrian, or other object in front of the car when unexpectedly the orange warning to brake came on and an instant later the car braked on its own and came to a complete stop in the middle of the road. Given the sudden and forceful stop, I went forward into the seat belt. Fortunately, there was not a vehicle behind me as I would have been rear ended putting both me and the people in the other vehicle in danger. I reported the incident to the dealer using their online system (I wanted to do it in writing, but could not find a direct email address), but have not heard back from them yet.

I was driving along the NJ Turnpike at approximately 65 miles an hour when the brake warning light started flickering on and off and then the brakes engaged. It was quick, as if I had stepped hard on the pedal. No vehicle was in front of me, but I was driving through the express EZ Pass lane. Later that same day, it happened again, but this time it was only as if someone tapped on the brakes. The brake light flashed then too. To answer the above questions: What component or system failed or malfunctioned, and is it available for inspection upon request? The Collision Mitigation Braking System, and yes it is How was your safety or the safety of others put at risk? Someone could have rear-ended me Has the problem been reproduced or confirmed by a dealer or independent service center? No Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? The brake light warning flickered on before each instance

I was driving on a road that the car has been on hundreds of times. Flat, straight, dry road with no other cars around. The car all of a sudden braked very hard and the "BRAKE" light started flashing and beeping for about 3-4 seconds and then went off and then the brake fully released. It was like hitting an invisible wall and fighting to maintain control of the car at the same time. It came out of nowhere and was so shocking. There was nothing around me and no reason for the AEB system to be used. I can't tell you if my foot was pressing on the gas or had lifted to maintain speed. I do know that my foot was on or lifted above the gas pedal and nowhere near the brake. I am shocked it didn't cause an accident but I am guessing that is because I held tight to the steering wheel and possibly because there were no other cars around. I have severe whiplash, a major headache, backache and am very scared driving the car should it happen again. I have not gone to receive medical treatment yet but it is highly likely that I will need it. I will be contacting the dealership as well to discuss.

I've owned the car for over a year now, bought it for my daughter. 3 times the emergency braking system has gone off while driving for no reason. the last event happened while driving on a Hwy at 55 mph with no in front of her. The car slammed on the brakes, and the brake warning light went off, thankfully no one was behind her.

This car brakes while we are driving while there is nothing in front. was reported to the dealer, they can not find the issue unless the carb does it, or I can turn off the program, but that is not a safe move.