2019 Honda Accord Hybrid forward collision avoidance problems

“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…”

“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.”

“I bought this 2019 Honda Accord on June 30th from a company called Greenville Motor Company. July 1st, I took the car to the Honda dealership to get a diagnostic to make sure everything was in good shape. The technician I spoke with did notice the car & stated that it had a problem with the previous owner which was the Injectors. She told me that the light may not come on now but it may come on in the future. After I left the Honda dealership, I went to Greenville Motor Company & showed them the diagnosis I had done at Honda. He said he didn't see anything wrong. On July 2nd, all of my dashboard lights came on. Took it back to Greenville Motor Company, the tech there said I could pick it up July 3rd & drive it over the weekend. (basically he reset the lights so they wouldn't come on for a certain period of time).Within this time period I took it back to the Honda dealer & they told me that I also needed a turbo, they gave me the printout for that as well. Took it to Greenville Motor Company, they agreed that I did. need a turbo. Manager says he ordered turbo. I I don't remember the date I took it back but on July 12th, my dash lights came on again. I took it…”

“Lights go crazy in dashboard apparently due to constan cylinder misfires, spark plugs changed, same issue, fuel injectors and coils changed, same happened keep it getting fix and the problem persist, making the car dangerous to drive, since it loses power since the car it’s not able to respond and work as it should be Having engine, steering and brake issues, problem has been confirmed by dealer. It hasn’t been inspected by manufacturer. The lost of power and acceleration it’s probably one of the symptoms before all the light go on again. It’s been several times that this happens and I know for a fact that many people are experiencing this issues due to turbo or head gasket failure. Might get that inspected soon.”

“If you are having this problem where every warning indicator is illuminated, codes scanned but no clear solutions to the “Christmas Tree dash board This is an ongoing issue with the 10th generation and there is no definitive “fix” recognized by Honda. Sometimes it is the battery, the alternator, the head gasket, the ECM, injectors….the list goes on and on. Sometimes the repair fixes the issue, but based on research, the issue typically comes back shortly after the service department throws another part at the problem.”

“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.”