Honda Accord adaptive cruise problems

Filed Oct 28, 2026 · Electrical · FL

Unknown cause - Heavy Traffic I get all warning lights (idiot) come on. No performance loss but every advisory and caution is illuminated. Tested battery 550amps and regulator was putting out 14 volts so all seemed fine. Check battery terminals and connections, all good. After two days lights go away and everything works fine. When lights and advisory are on, no cruise control, TMPS, lane departure, assisted steering, and anything else in the caution light display doesn't work. Good thing all other aspects of the car work fine. Unable to determine the issue with Why this happens. Seen on line others have had this same issue.

Filed Oct 21, 2026 · Driver assistance · OH

In XXX, the driver assistance and safety systems on my 2025 Honda Accord SE began failing repeatedly. While driving, warning messages would appear for the collision mitigation braking system, lane keeping assistance, adaptive cruise control, and automatic high beams, and these systems would become unavailable. This happened multiple times over XXX and XXX . I took the vehicle to Hugh White Honda in [XXX], four to five times for this problem. The dealer replaced the forward-facing camera twice under warranty, but the warnings and system failures continued after each repair. The dealer was never able to identify or fix the underlying cause. I filed a complaint with American Honda on XXX (case XXX). Because the safety systems on a nearly new vehicle could not be repaired, I traded the vehicle in on XXX, with approximately 17,000 miles. No crash or injuries occurred, but the vehicle repeatedly lost the use of its collision avoidance and lane keeping safety systems in normal driving, and the manufacturer could not repair the defect. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 18, 2026 · Brakes, Electrical · FL

Vehicle: 2021 Honda Accord Sport Subject: Intermittent Electrical Malfunctions, Multiple Safety Warnings, and Loss of Acceleration I am reporting ongoing safety concerns involving my 2021 Honda Accord Sport. On multiple occasions, my vehicle has displayed several dashboard warnings, including brake system, electric parking brake, vehicle stability assist, hill-start assist, adaptive cruise control, and electric power steering warnings. These warnings have appeared intermittently in the past and sometimes disappeared on their own. On October 18, 2026, while traveling on the highway at approximately 65 mph, these warnings had already been displayed for approximately 30 minutes to an hour when my vehicle suddenly began struggling to accelerate. Despite pressing the accelerator, the vehicle continued losing speed, and the RPM gauge remained around 2,000 RPM. It felt as though something was holding the vehicle back. After several moments, the vehicle suddenly regained power, accelerated, and the RPM increased. This was particularly concerning because I was traveling at highway speed. I also experienced electrical problems with the interior lights. While the vehicle was running, neither the automatic interior lights nor the overhead lights near the rearview mirror would turn on. They remained inoperative after I turned off the vehicle. Later, the lights began working again, but I noticed the right overhead light fading while the left remained illuminated. The battery was replaced earlier this year, in 2026. I am concerned that these intermittent malfunctions could result in a sudden loss of power or failure of important vehicle safety systems while driving. I am requesting that these problems be documented and investigated for a potential safety defect or recall. I have photographs of the dashboard warnings available as supporting documentation.

Filed Oct 9, 2026 · Fuel system · LA

I am reporting repeated, unpredictable loss of engine power and propulsion in my 2019 Honda Accord Touring 2.0T (approximately 146,000 miles). The exact cause remains UNKNOWN. On XXX, while driving on [XXX] near [XXX], my vehicle suddenly lost acceleration at highway speeds and eventually stalled. The vehicle repeatedly lost power, experienced crank-no-start conditions, and at one point could barely maintain 10 mph. I was stranded and had to have the vehicle transported to a Honda dealership in [XXX]. Diagnostic code P0087 (Fuel Rail/System Pressure Too Low) was recorded multiple times, including at 70–74 mph. Numerous warnings appeared, including emissions, brake system, electric power steering, stability assist, adaptive cruise control, collision mitigation, and road departure mitigation. The unpredictable loss of propulsion creates a serious collision risk, especially on highways and in traffic. The Honda dealership initially could not reproduce the failure. After replacing the spark plugs at my expense, the vehicle was returned to me. Approximately 23 miles later, the malfunction returned, and I immediately brought the vehicle back without clearing any codes. Honda subsequently diagnosed and replaced the high-pressure fuel pump at my expense, but the loss-of-power issue continued. The vehicle previously received Honda’s in-tank fuel pump safety recall repair in May 2025. Despite that recall remedy and subsequent repairs, the vehicle continues to malfunction. The exact cause remains undetermined. The vehicle has been inspected by an authorized Honda dealership. Repair records and diagnostic information are available, and the vehicle can be made available for inspection upon request. I am requesting an investigation into this recurring safety-related loss of propulsion. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 5, 2026 · Brakes, Electrical · TX

While driving my Honda on a highway at approximately 65 mph after rainfall, I experienced a serious and potentially life-threatening safety failure. Without warning, the steering wheel suddenly became locked/restricted, making it extremely difficult to control the vehicle. At the same time, numerous warning lights and safety-system warnings appeared, including: - Brake system warning - Electric Power Steering (EPS) warning - Vehicle Stability Assist warning - Hill Start Assist warning - Adaptive Cruise Control warning - Lane Keeping Assist warning - Collision Mitigation Braking System warning - Road Departure Mitigation warning This incident occurred while I was traveling approximately 65 mph on the highway and nearly caused me to lose control and crash. The sudden loss/restriction of steering control combined with the simultaneous failure or disabling of multiple driver-assistance and safety systems created an extremely dangerous situation. The fact that this occurred after driving in rainy/wet conditions is also concerning. I have researched this issue online and found numerous reports from other Honda owners describing similar warning lights, steering/electric power steering problems, and multiple safety-system failures, particularly involving Honda Accord vehicles. I am extremely concerned that this may represent a recurring safety-related defect rather than an isolated incident. A steering system that can suddenly become locked or severely restricted while a vehicle is traveling at highway speed presents a serious risk of a crash, injury, or loss of life. I respectfully request that the federal safety agency investigate this issue, review complaints involving similar Honda vehicles, and determine whether there is a common defect involving the electric power steering system, electrical system, water intrusion, or communication between the vehicle's safety-control modules. This problem needs to be investigated before someone is seriously injured or killed.Best regards.

Filed Sep 25, 2026 · Driver assistance, Steering · CA

We were driving home after a day trip and the assisted everything (cruise control, power steering, adaptive lane control, brake assist), basically all of the driver assisted functions including the diagnostics for the phone app. We were about 60 miles from home in a remote area and the car said we could keep driving but to "call the dealer". We got home, made an appointment and after a couple days (we are 90 miles from the dealer) the car suddenly fixed itself. Dealer said "next time it happens bring it in". Yeah, these things only happen in the middle of nowhere at 10 pm. The car is brand new. I see there have been recalls in the past with issues like this on hondas. This car should be on a watch for recalls.

Filed Sep 23, 2026 · Driver assistance, Electrical · MI

This incidence occurred twice, one year apart, under the same driving and weather conditions and on exactly the same route. On XXX, after departing [XXX], we were driving north on [XXX] near [XXX], with the adaptive cruise control set to 70 mph. Suddenly the dashboard displayed the warning, “Some driver assist systems cannot operate: Clear area shown,” and the Honda emblem indicator illuminated. Following the vehicle’s instructions, we stopped and cleaned the Honda emblem by wiping and rinsing it, but the warning remained. After we continued driving north on [XXX] for approximately three to four hours, the warning cleared without further action. The weather was clear and sunny. An identical incident occurred one year earlier, on XXX, along the same section of northbound [XXX] and under the same driving and weather conditions. Accord was also set to 70 mph with adaptive cruise control engaged. That warning again cleared on its own after a few hours. In addition, while driving in the left lane on XXX with adaptive cruise control engaged, Accord braked aggressively while passing semi-trucks traveling in the right lane, even though there were no vehicles ahead. This happened several times. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 22, 2026 · Electrical, Engine · SC

I am not sure if this would be considered an engine or electrical issue, but my 2019 Honda Accord sport loses power at takeoff. Press the gas all the way to the floor but still lags at take-off. I have to pull over, turn off the engine, restart then go which is a huge safety issue and is very dangerous. Also, all of the dash lights are on which causes all of the safety tools, sport mode, cruise control, all road assist tools, and auto start to be disabled. This has been an issue for about 3 years, and every dealer tells me that there is a recall on these items, but when I look up my vin, it says my vehicle is not included in any of the recalls listed. Even though all of the things happening are signs of the recall issued. Please help me in what I need to do to get my vehicle included in this recall and get my vehicle back to safety requirements.

Filed Sep 20, 2026 · Driver assistance · FL

My 2016 Honda Accord Touring has an intermittent failure of multiple Honda Sensing safety systems. The vehicle displays warnings for Collision Mitigation Braking System, Road Departure Mitigation System, Adaptive Cruise Control, and Lane Keeping Assist System. When this occurs, these driver-assistance and collision-avoidance features become unavailable. This is a recurring problem. In August 2023, an authorized Honda dealer diagnosed substantially similar symptoms. The technician documented DTC P2583-87, described on the repair order as “lost comm with the wave radar.” The dealer removed the bumper, tested wiring between the radar and camera, checked radar power and ground, and diagnosed a faulty millimeter-wave radar unit. The Honda dealer replaced the radar assembly with part 36802-T2A-A05 and performed radar aiming/calibration. The repair order states that normal operation was restored. I paid $1,422.08 for the repair and related charges. The problem has now returned and is intermittent. At times all systems work normally; at other times the multiple Honda Sensing warnings appear together and the safety systems become unavailable. I am concerned that a previously replaced and calibrated Honda millimeter-wave radar/safety system has experienced a recurring failure. I am requesting that the federal safety agency review this issue and similar complaints to determine whether a safety-related defect exists.

Filed Sep 5, 2026 · Brakes, Driver assistance · CA

I own a 2019 Honda Accord Sport 1.5T. While operating my vehicle, multiple safety-system warnings appeared on the dashboard at the same time. The vehicle displayed “Brake Hold System Problem,” “Adaptive Cruise Control System Problem,” “Collision Mitigation Braking System Problem,” and “Road Departure Mitigation System Problem,” each instructing me to see my dealer. These warnings concerned me because they involved the braking system and several Honda Sensing safety systems simultaneously. I parked the vehicle and turned the engine off. When I restarted the vehicle, all of the warnings had disappeared and the dashboard appeared normal again, even though no repair had been performed. The vehicle has approximately 72,980 miles. I have photographs documenting the warnings while they were displayed. I am reporting this to the federal safety agency because the problem was intermittent and affected multiple braking and driver-assistance systems at the same time. I am concerned that the systems could malfunction again while driving, including the braking/collision-mitigation system. I would like this incident documented as a potential safety defect involving the 2019 Honda Accord.