2019 Honda Accord Hybrid driver assist problems

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

Description of Incident: 1. Component/System Failure: The engine cooling system and head gasket failed. A certified shop has confirmed coolant intrusion and a failed leak-down test on Cylinder 2. The vehicle is available for inspection upon request. 2. Safety Risk: My safety and the safety of my family and other drivers were put at extreme risk. On March 1, 2026, the vehicle suffered a sudden loss of motive power while traveling at 70 MPH on the freeway. The car dropped to 15 MPH instantly, forcing me to maneuver across active lanes to a narrow shoulder with almost no space. I was nearly hit by high-speed traffic. This has occurred over 8 times since 2023. 3. Confirmation by Service Center: The problem has been reproduced and confirmed by an independent service center On Site Lube Auto & Tire. They utilized a borescope and leak-down test to verify the internal engine failure. 4. Inspections: The vehicle has been inspected by a certified independent technician. I am in the process of notifying the manufacturer (Honda) of these findings for their inspection and accountability. 5. Warning Lamps & Symptoms: Prior to the total power loss, the vehicle displayed engine temperature warnings and "check engine" lights. These symptoms first appeared approximately 8 months after purchase in 2023 and have progressively worsened, leading to the current engine failure. 6. Additional Notes: This failure is identical to issues cited in active class-action lawsuits regarding Honda's engine defects, affecting both standard and Hybrid models. I am communicating via written report/email for documentation and accessibility purposes.

NHTSA complaint #11722489 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

While traveling at approximately 55 mph yesterday, in daylight, with no other cars in front, back, or to the side of our car, it radically braked on its own. The collision mitigation system warning light has frequently flashed on the dashboard since we bought the car new in 2019 but never did it apply the brakes on its own. Dealerships over the years have told us "this just happens", and offered no fix for the false positive alerts. This is a dangerous situation which could result in an accident or even death of occupants if not resolved by Honda. I spoke with several dealerships since the phantom braking event and they tell me they hear this complaint often. Being an intermittent situation, it is extremely difficult to diagnose and resolve. Something needs to be done.

NHTSA complaint #11685267 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

All of sudden, no incident, no accident, a lot of things were disabled such as Adaptive Cruise Control , Forward Collision Warning , Lane Departure Warning and more while I was out of town (long range highway travel). When I went to Honda dealership, they blamed a few things and fixed them (expensive), then they said that the front camera needed a calibration. It was expensive. After that aiming correction, everything works fine. The camera was NOT broken. It just needed recalibration, and it costed about a thousand dollars. I would say it was caused by the poor design, which is Honda's fault. I googled this issue and found a lot of Honda owners had same issued and charged 1K ~2K for it. I will report it separately, but my Honda Odyssey has the exactly same issue now. I have 2 Honda cars, and both of them have the same issue. I strongly suggest that Honda should recall their front camera and they should reimburse the expense we already paid for it.

NHTSA complaint #11670645 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

All of sudden, no incident, no accident, a lot of things were disabled such as Adaptive Cruise Control , Forward Collision Warning , Lane Departure Warning and more while I was out of town (long range highway travel). When I went to Honda dealership, they blamed a few things and fixed them (expensive), then they said that the front camera needed a calibration. It was expensive. After that aiming correction, everything works fine. The camera was NOT broken. It just needed recalibration, and it costed about a thousand dollars. I would say it was caused by the poor design, which is Honda's fault. I googled this issue and found a lot of Honda owners had same issued and charged 1K ~2K for it. I will report it separately, but my Honda Odyssey has the exactly same issue now. I have 2 Honda cars, and both of them have the same issue. I strongly suggest that Honda should recall their front camera and they should reimburse the expense we already paid for it.

NHTSA complaint #11670645 — an unverified report by a vehicle owner.

LANE DEPARTURE: WARNING

All of sudden, no incident, no accident, a lot of things were disabled such as Adaptive Cruise Control , Forward Collision Warning , Lane Departure Warning and more while I was out of town (long range highway travel). When I went to Honda dealership, they blamed a few things and fixed them (expensive), then they said that the front camera needed a calibration. It was expensive. After that aiming correction, everything works fine. The camera was NOT broken. It just needed recalibration, and it costed about a thousand dollars. I would say it was caused by the poor design, which is Honda's fault. I googled this issue and found a lot of Honda owners had same issued and charged 1K ~2K for it. I will report it separately, but my Honda Odyssey has the exactly same issue now. I have 2 Honda cars, and both of them have the same issue. I strongly suggest that Honda should recall their front camera and they should reimburse the expense we already paid for it.

NHTSA complaint #11670645 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

I was driving on a city street at about 30mph. There was no one in front of me or behind me. Nothing in the road. The orange rectangular brake light came on for no reason, kept flashing and it felt as if the brakes were automatically being pumped, slowing the car down to a compete stop. In addition, I had no control of the steering. It was very dangerous situation which could have resulted in accident or injury.

NHTSA complaint #11662692 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

Forward collision warning stopped working after a system upgrade on my 2019 Honda Accord hybrid. I activate the forward support and immediately it turns off. This is a safety issue. The system assist in breaking in time to maintain car distance and avoid a collision. Contacted Honda. I was told to take it to service at my cost.

NHTSA complaint #11652461 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

Suddenly I get warnings of failure of adaptive cruise control, failure of braking, stearing and forward collision warning failure. It goes away if I drive my vehicle for few miles but then suddenly appears again. No one seems to know what is the issue. I tried to reset setting multiple times, checked system updates and checked battery etc, asked to check if there are any faulty codes but no one seem to know what is going on. It keeps happening every day

NHTSA complaint #11645271 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

Suddenly I get warnings of failure of adaptive cruise control, failure of braking, stearing and forward collision warning failure. It goes away if I drive my vehicle for few miles but then suddenly appears again. No one seems to know what is the issue. I tried to reset setting multiple times, checked system updates and checked battery etc, asked to check if there are any faulty codes but no one seem to know what is going on. It keeps happening every day

NHTSA complaint #11645271 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

I have was called steering sticking in my steering wheel when I’m driving and it stuck straight and I have to turn it a little bit. I have to kinda yank it just a tad bit because the steering is sticking is an issue with other Hondas. I’m having it also.

NHTSA complaint #11569934 — an unverified report by a vehicle owner.

LANE DEPARTURE: ASSIST

I have was called steering sticking in my steering wheel when I’m driving and it stuck straight and I have to turn it a little bit. I have to kinda yank it just a tad bit because the steering is sticking is an issue with other Hondas. I’m having it also.

NHTSA complaint #11569934 — an unverified report by a vehicle owner.

LANE DEPARTURE: WARNING

The Lane Departure Warning. Auto Dimming Headlights,, and traffic sign Recognition system stopped working at about 40000 miles. The dealer says they can't fix it. Also, my windshield, like so many others I've read about, spontaneously cracked while parked, on a day with moderate temperature and no hail. The camera was realigned. Still, the 3 sensing aids above still don't work. Uncertain about exact date

NHTSA complaint #11565024 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

On multiple occasion my vehicle will brake unexpectedly with no object in the road or surrounding my car. It has done it at freeway speeds as well as driving through parking lots. It often will sense construction repairs on the road and think I am departing the lane again slamming on the brakes (on the freeway) I have luckily avoided accidents but have had numerous close calls.

NHTSA complaint #11549462 — an unverified report by a vehicle owner.

LANE DEPARTURE: WARNING

On multiple occasion my vehicle will brake unexpectedly with no object in the road or surrounding my car. It has done it at freeway speeds as well as driving through parking lots. It often will sense construction repairs on the road and think I am departing the lane again slamming on the brakes (on the freeway) I have luckily avoided accidents but have had numerous close calls.

NHTSA complaint #11549462 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

On multiple occasion my vehicle will brake unexpectedly with no object in the road or surrounding my car. It has done it at freeway speeds as well as driving through parking lots. It often will sense construction repairs on the road and think I am departing the lane again slamming on the brakes (on the freeway) I have luckily avoided accidents but have had numerous close calls.

NHTSA complaint #11549462 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

07/28/2023 - Car showed many brake system errors: electric parking brake, vehicle stability, adaptive cruise control, etc. Took to Heritage Honda, Bel Air, MD, and got error code diagnosis of PI20-00, brake system/pedal simulator failure. Heritage "reflashed" pedal simulator and cleared code. Told OK to drive but if brake system errors showed up again, pull over to side of road and have car towed. Drove 20+ miles home. 07/29/2023 - Car again showed brake system errors as on 07/28. Husband and I drove car around our development and there were no brakes, even after husband pumping and pushing down on brake pedal very hard. 07/31/2023 - Flat bed towed car to Martin Honda, Newark, DE and got same error code. Paid to replace brake pedal simulator, PN 01469-TWA-A56. Issue is that brake system did not fail safely, because failure of pedal simulator left me with no brakes. Requested Honda pay entire Martin Honda invoice but Honda paid $1400 of repair. Have since requested that Honda pay remaining $1000 that I paid, plus diagnostic fee for Heritage Honda, and towing charge.

NHTSA complaint #11544996 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

07/28/2023 - Car showed many brake system errors: electric parking brake, vehicle stability, adaptive cruise control, etc. Took to Heritage Honda, Bel Air, MD, and got error code diagnosis of PI20-00, brake system/pedal simulator failure. Heritage "reflashed" pedal simulator and cleared code. Told OK to drive but if brake system errors showed up again, pull over to side of road and have car towed. Drove 20+ miles home. 07/29/2023 - Car again showed brake system errors as on 07/28. Husband and I drove car around our development and there were no brakes, even after husband pumping and pushing down on brake pedal very hard. 07/31/2023 - Flat bed towed car to Martin Honda, Newark, DE and got same error code. Paid to replace brake pedal simulator, PN 01469-TWA-A56. Issue is that brake system did not fail safely, because failure of pedal simulator left me with no brakes. Requested Honda pay entire Martin Honda invoice but Honda paid $1400 of repair. Have since requested that Honda pay remaining $1000 that I paid, plus diagnostic fee for Heritage Honda, and towing charge.

NHTSA complaint #11544996 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

I purchased a 2019 certified pre-owned Honda Accord Touring Hybrid in February, 2022. This was the second Honda Accord Touring Hybrid I've owned, so I was already very familiar with this vehicle. Over the next couple months, I started experiencing some odd things - the LKAS and Lane Departure systems weren't operating correctly consistently. For example, the steering wheel would start shaking and warning lights pop up on my dash, and the steering wheel is pulling to one direction thinking I'm veering into another lane when I'm not. This was concerning, but at the time the infotainment system was crashing regularly and that was more concerning. In addition, the Automatic Emergency Braking also seemed to be off, engaging at times when there wasn't a vehicle in front of me. In May, 2022 I was driving on the highway with the Adaptive Cruise Control set to 70mph (the posted speed limit). There were no other cars on the highway in my line of sight, when without warning, the Automatic Emergency Braking system engaged and the car slammed on the brakes, coming to nearly a complete stop. Alarms, lights and brakes all fully engaged in a sudden and unexpected manner, absolutely putting my life at risk. I was so shaken up by this experience that I had to pull over and compose myself before continuing on to my destination. I took the vehicle in to my local Honda dealership and told them of all the issues. To date, the only issue fixed is the Infotainment System. I've taken my vehicle in to Honda multiple times, and although trouble-shooting and 'fixes' have been done, within a couple of weeks from the 'fix', the car starts behaving like this again. Honda repeatedly says they can't find a problem or they've 'fixed' the problem. Clearly there is a problem and none of the 'fixes' have worked. I don't feel safe driving the car, but cannot afford to replace it.

NHTSA complaint #11500037 — an unverified report by a vehicle owner.

LANE DEPARTURE: WARNING

I purchased a 2019 certified pre-owned Honda Accord Touring Hybrid in February, 2022. This was the second Honda Accord Touring Hybrid I've owned, so I was already very familiar with this vehicle. Over the next couple months, I started experiencing some odd things - the LKAS and Lane Departure systems weren't operating correctly consistently. For example, the steering wheel would start shaking and warning lights pop up on my dash, and the steering wheel is pulling to one direction thinking I'm veering into another lane when I'm not. This was concerning, but at the time the infotainment system was crashing regularly and that was more concerning. In addition, the Automatic Emergency Braking also seemed to be off, engaging at times when there wasn't a vehicle in front of me. In May, 2022 I was driving on the highway with the Adaptive Cruise Control set to 70mph (the posted speed limit). There were no other cars on the highway in my line of sight, when without warning, the Automatic Emergency Braking system engaged and the car slammed on the brakes, coming to nearly a complete stop. Alarms, lights and brakes all fully engaged in a sudden and unexpected manner, absolutely putting my life at risk. I was so shaken up by this experience that I had to pull over and compose myself before continuing on to my destination. I took the vehicle in to my local Honda dealership and told them of all the issues. To date, the only issue fixed is the Infotainment System. I've taken my vehicle in to Honda multiple times, and although trouble-shooting and 'fixes' have been done, within a couple of weeks from the 'fix', the car starts behaving like this again. Honda repeatedly says they can't find a problem or they've 'fixed' the problem. Clearly there is a problem and none of the 'fixes' have worked. I don't feel safe driving the car, but cannot afford to replace it.

NHTSA complaint #11500037 — an unverified report by a vehicle owner.

LANE DEPARTURE: ASSIST

I purchased a 2019 certified pre-owned Honda Accord Touring Hybrid in February, 2022. This was the second Honda Accord Touring Hybrid I've owned, so I was already very familiar with this vehicle. Over the next couple months, I started experiencing some odd things - the LKAS and Lane Departure systems weren't operating correctly consistently. For example, the steering wheel would start shaking and warning lights pop up on my dash, and the steering wheel is pulling to one direction thinking I'm veering into another lane when I'm not. This was concerning, but at the time the infotainment system was crashing regularly and that was more concerning. In addition, the Automatic Emergency Braking also seemed to be off, engaging at times when there wasn't a vehicle in front of me. In May, 2022 I was driving on the highway with the Adaptive Cruise Control set to 70mph (the posted speed limit). There were no other cars on the highway in my line of sight, when without warning, the Automatic Emergency Braking system engaged and the car slammed on the brakes, coming to nearly a complete stop. Alarms, lights and brakes all fully engaged in a sudden and unexpected manner, absolutely putting my life at risk. I was so shaken up by this experience that I had to pull over and compose myself before continuing on to my destination. I took the vehicle in to my local Honda dealership and told them of all the issues. To date, the only issue fixed is the Infotainment System. I've taken my vehicle in to Honda multiple times, and although trouble-shooting and 'fixes' have been done, within a couple of weeks from the 'fix', the car starts behaving like this again. Honda repeatedly says they can't find a problem or they've 'fixed' the problem. Clearly there is a problem and none of the 'fixes' have worked. I don't feel safe driving the car, but cannot afford to replace it.

NHTSA complaint #11500037 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

Noticed there is already an investigation open. My car is literally afraid of shadows and other objects that just aren't there. It will slam on the brakes as it detects that there is an impending crash despite any cars near me. It has almost caused 3 accidents with the cars behind me. I took it to my local honda dealership and they told me nothing was wrong with my car and everything was fine.

NHTSA complaint #11499108 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

I was driving on a local urban street, probably 20 mph, when car suddenly braked hard for no reason. My foot was not on the brake at the time, and there was not a car or potential collision in front of me to trigger this. I reported the problem to the dealer, and they performed a software update. They weren't able to tell me if it was a general update or one specific to this problem.

NHTSA complaint #11470582 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: WARNINGS

I was driving on a local urban street, probably 20 mph, when car suddenly braked hard for no reason. My foot was not on the brake at the time, and there was not a car or potential collision in front of me to trigger this. I reported the problem to the dealer, and they performed a software update. They weren't able to tell me if it was a general update or one specific to this problem.

NHTSA complaint #11470582 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

When driving on the Interstate Highway with the adaptive cruise control, on rare and unpredictable time, the car will suddenly flash the brake warning and brake and/or rapidly slow down. Pressing the accelerator will override the issue. However, it is not reproducible. It can occur any time of day or night.

NHTSA complaint #11456998 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

When driving on the Interstate Highway with the adaptive cruise control, on rare and unpredictable time, the car will suddenly flash the brake warning and brake and/or rapidly slow down. Pressing the accelerator will override the issue. However, it is not reproducible. It can occur any time of day or night.

NHTSA complaint #11456998 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

Collision mitigation braking system error reported on the car it says to take to the dealer for service also says that adaptive cruise could be affected also. I read that many other owners are reporting this issue.

NHTSA complaint #11456881 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

Multiple time the car will apply the emergency braking system when there are no cars in front of me. Mainly it happens on a multi-lane road and I am overtaking the car to the right of me, especially if I am on a curve to the left. The car will suddenly apply the brakes which can aid to the loss of control of the car. If the road were icy, it would almost certainly cause a loss of control and an accident. It has happened on a straight stretch of road, but it is more rare. Initially this was a rare occasion, however it has increased in frequency as the car ages. Now that the warrantee has expired I have not taken it in to have it checked, but I feel I am going to need to do it. There were no warning signs, lamps, or messages other than the brakes being applied and the emergency braking light coming on. When I saw there were other occurrences of this issue, I had to file this complaint. I believe this needs to be a recall issue before more serious injuries or fatalities occur. Below it asked when it happened, how many miles on the car, and the answer is multiple times at multiple speed and first started at around 20,000 miles. Again it has gotten worse over time. the car currently has about 46,000 miles

NHTSA complaint #11455155 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

I saw NHTSA is investigating some Honda vehicles for unnecessary emergency braking incidents. I've had this problem as well and wanted to report it. The 2019 Honda Accord Hybrid, multiple times over the past 3+ years, has engaged the brakes when there were no cars in front of me. From my recollection this happens at medium to high speeds (40mph+) so if someone were behind me they may rear-end my car. This has happened probably a half dozen times over the past 3 years but there is no way to reliably reproduce it as it seems random. I haven't had any inspections, nor are there any warning lamps or messages relating to this. Note: The date I am including is not necessarily when it happened as I don't have those dates. But it's required.

NHTSA complaint #11454054 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

We were driving down the road, when my car automatically “detected” a car in front of me and braked extremely hard. Thing is, there were no car or obstacle in front is. I was able to catch that on my dash cam.

NHTSA complaint #11453760 — an unverified report by a vehicle owner.

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

My wife’s car and she was driving and the car applied brakes by itself and wife was force to move to the side on a highway. Took it to dealership and said that nothing was wrong with vehicle

NHTSA complaint #11453930 — an unverified report by a vehicle owner.