Owner-reported complaints naming the driver-assistance system, filed with NHTSA
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Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems. Every record below is an owner-reported complaint about the 2021 Honda Pilot submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 128 reports on file name it.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
The 25 most recent of 128, in the owner's own words
The entire ADAS suddenly failed. the vehicle started cycling through all warning indicators (adaptive cruise control problem, abs problem, lane keep assist problem, brake mitigation system problem etc) brought it to Honda today and they confirmed that the "multi purpose camera/millimeter wave radar unit with aiming" had failed and needed to be replaced. Honda charged $1764.14 for all work to fix this on 9/15/2026
The contact owns a 2021 Honda Pilot. The contact stated that the vehicle was repaired under an unknown recall; however, the recall repair failed to prevent the failure. The contact stated that while shifting in reverse(R), the rear-view camera failed to display a clear image. The local dealer was contacted. The manufacturer was made aware of the failure. The failure mileage was approximately 75,000.
Vehicle has multiple safety system failures. After extensive online research and multiple diagnostics, repair technicians indicating safety camera failure due to heat. Technician indicating significant increase specific to this vehicle of late. Excessive environmental temperature “frying” ADAS camera. This causes failure to HondaSense safety features such as collision mitigation, lane keeping, and road departure mitigation - features touted as industry leading by Honda. Matter has been diagnosed and duplicated by service technicians. Extensive online research indicates potential widespread issue that requires highly expensive replacement/repair and calibration.
Front safety camera no longer works which has disabled the lane keep assist, automatic cruise control, brake system, and road departure mitigation system. This is a safety hazard.
Warning lamps for lkas, acc, auto lights and brake system started to appear. Honda diagnostics have pointed to an electrical failure with the multipurpose camera. The Honda representative admitted that this is a very common failure. I was told the car is “safe to drive” but there are constant brake system warning lights flashing on my dash. The net result is that I have no ability to know whether there is an actual brake system failure if one were to occur.
The infotainment system and rearview backup camera malfunction continually. While driving or attempting to reverse, the infotainment system frequently shuts off entirely and loses its fiber optic network connection. When it attempts to reboot and turn back on, loud popping and crackling noises emit from the vehicle speakers. Additionally, the backup camera regularly glitches and displays a message stating that the system is "Too Hot," causing the rearview monitor to go entirely blank. These issues are especially severe on hot days.This creates an immediate safety hazard, as it unexpectedly eliminates rear visibility while backing up, increasing the risk of a collision. It also causes distracted driving conditions due to the sudden, loud audio popping and screen blackouts. This failure mimics the exact symptoms outlined in Honda's active MOST Bus Coaxial Cable recall, yet my vehicle is experiencing the same severe safety defects. Rear view camera does warn it no longer works due to heat. No inspection done as of yet but plan on taking it to dealership.
My 2021 Honda Pilot displayed a U3000 diagnostic trouble code, indicating an internal electronic failure of the front-facing multipurpose camera that operates the vehicle's Honda Sensing safety systems (Collision Mitigation Braking System, Lane Keeping Assist System, Road Departure Mitigation, and Adaptive Cruise Control). As a result, these safety systems became inoperative. I took the vehicle to an authorized Honda dealer, who confirmed the U3000 code and quoted approximately $2,000 to replace the camera unit. I have since learned this is a widely reported failure across multiple Honda and Acura models (Pilot, Odyssey, CR-V, Accord, Civic, HR-V, Clarity, RDX, MDX) and is the subject of a proposed class action lawsuit alleging Honda knew of the defect and failed to disclose it or issue a recall. I am filing this report to document the failure and its safety impact.
The vehicle’s driver‑assist and collision‑avoidance systems began failing simultaneously. Multiple warnings appear on the dashboard every time the vehicle is started, and the cruise control system has stopped functioning entirely. Adaptive Cruise Control cannot be disabled, preventing the use of standard cruise control. Collision Mitigation System Problem Adaptive Cruise Control Problem (ACC) Lane Keeping Assist Problem (LKAS) Road Departure Mitigation System Problem Auto High-Beam Problem The failure of one component impacts multiple vehicle features, the ability to maintain safe following distance, avoid collisions, stay within lane boundaries, and properly manage headlights. The loss of cruise control functionality also affects long‑distance driving safety and consistency. These systems are designed to prevent accidents; their simultaneous failure represents a significant safety hazard. Dealer inspection indicates repairs costing thousands of dollars, often involving replacement of sensors, radar units, or wiring harnesses. No recall or service bulletin has been provided to address this widespread issue. Many Honda owners have reported identical failures on online forums and owner groups. The pattern suggests a systemic defect affecting Honda’s driver‑assist safety systems across multiple models and years. I am requesting that NHTSA investigate this issue as a potential safety defect affecting Honda vehicles. The failure of multiple collision‑avoidance and lane‑keeping systems at once poses a serious risk to drivers, passengers, and others on the road.
My Honda has recently began displaying ADAS Failure where none of the features work including cruise control. I took to a mechanic and they displayed code U3000. This seems to be a common issue that Honda is not addressing. The fee to repair is over $1500 and the car is less than 5 years old. This is a safety issue.
I am having these problems with my 2021 Honda Pilot Touring causing intermittent sudden braking. The dealership is quoting me a lot of money to fix them. Collision Mitigation System problem Road Departure Mitigation System Problem Auto High Beam Problem Lane Keep Assist Problem Adaptive Cruise Control Problem These problems should not be occurring to a an expensive vehicle worth over $45,000 for no reason. The dealership mentioned that they are caused by a failed battery fan.
While driving down the road the emergency braking turned on many times when I wasn’t even near a vehicle. It turned on about a total of 10 times without a car being unsafely in front of me. I just got this vehicle today and I’m worried about whether I should keep it or not because of this.
Driving on the road and heard static noise from the infotainment system after an update. I pressed the Collision Mitigation Braking System button and the dashboard had multiple warnings and disabling the entire Advanced Driver Assistance Systems (ADAS). The drive light starting blinking and a message appreaed to get to a Honda dealer. The Honda dealer inspected the front camera in the top of the windshield and said it needed to be replaced.
2021 Honda Pilot with 9,800 miles. Failed VSA Modulator directly related to the braking system. Warning lights: Vehicle stability assist, trailer stability assist, collision mitigation system, adaptive cruise control problem. Problem confirmed by Pensacola Honda Service Center and awaiting repair assistance from American Honda as they refuse to offer goodwill credit for repair due to being out of warranty, despite extremely low mileage and excellent condition of vehicle.
The contact owns a 2021 Honda Pilot. The contact stated that while driving at various speeds, the vehicle unintendedly accelerated without the driver depressing the accelerator pedal. The security alarm randomly activated while the vehicle was parked and turned off. The check engine warning light was illuminated. The message "Emissions System Failure" and a key fob error message was displayed, and the vehicle failed to start. The vehicle was taken to the local dealer. The cause of the failure was not yet determined. The manufacturer was not notified of the failure. The failure mileage was 98,000.
My dash is lit up like a Christmas tree. The CMBS has a serious issue, every safety feature has been disabled. Please refer to the he provided picture.
The contact owns a 2021 Honda Pilot. The contact stated that while driving at an undisclosed speed, the vehicle's rear brakes rub significantly to the point of prematurely wearing out the brake pads. Additionally, the instrument panel is failing and displaying all warning lights, and the side mirrors flicker while driving. The vehicle was taken to a local dealer where it was diagnosed to be NHTSA Campaign Number: 20V439000 (BACK OVER PREVENTION, ELECTRICAL SYSTEM) however, the VIN was not included in the recall repair. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 75,670.
About a month ago, I started my Pilot and the dash lit up. The adaptive cruise control, emergency braking, lane keeping assist, Lane departure, forward collision warnings all flashed on the dash- no previous warnings. Subsequently, the cruise control will not work at all. I had the system scanned by a Honda certified mechanic and it showed and internal cameral failure. This is a known issue across many Hondas and is a very costly repair at close to $2000.
I purchased my Honda Pilot 2021 5 years ago. Currently still making payments on it. The Collison Mitigation system warning sign came up on my dashboard about 1 year ago. After that warning sign came on 4 others popped up. Road Departure Mitigation system, Auto high-Beam problem, Adaptive cruise control problem, and lane keeping assist problem. Having all these warning signs come pop up on dashboard is very distracting while driving. Non of these controls are working and I have taken it to Honda to do an inspection. Since, its out of warranty I have to pay out of pocket $2,137.63 to get multipurpose camera unit replaced. Let alone this vehicle is still not paid off. I've also had issues with the starter shutting off while driving. It had a recall and I did get it replaced but I'm still having issues. This is a serious safety problem due to it shutting off while on the street. I been in life threating situations due to this problem. Honda needs to make sure there vehicles are safe for customers. T
Infotainment system doesn't work, including maps, and backup camera. I have read this is a common problem, but Honda isn't doing anything about it.
Braking system and cameras defective. Vehicle will flash BRAKE when nothing is in roadway. This will also cause vehicle to hard brake. When on interstate, cruise control no longer functions properly due to camera sensors reading a vehicle is in front of my vehicle when there is no other vehicle near. This causes braking system to activate and/or slow the cruise control down. This is a major safety risk for everyone involved, especially my children in the vehicle. This is a known Honda issue. This needs remedied before someone gets hurt and a lawsuit ensues. Fix the braking system and cameras!
Front camera needs to be replaced. According to several Honda forums, this is a very common problem requiring the front camera to be replaced. All safety features requiring the camera no longer work.
There is a problem with the camera that is disabled my brake system features. I am hearing this is a known issue with many of these cars
The following warning lights: adaptive cruise control problem, lane keeping assist, collision mitigation system, road departure mitigation problem, auto high beam problem
The following warning lights: adaptive cruise control problem, lane keeping assist, collision mitigation system, road departure mitigation problem, auto high beam problem. Honda estimates over $2000 to repair? From what I understand there are many other Honda's with these issues! With these items not functioning, it defeats many of the safety features we bought the car for. Exact date of when it began was last summer.
The windshield camera has malfunctioned causing 5 different safety warnings to appear and these functions are unavailable now. It has been evaluated by a dealership and they claim that it has to be replaced at a cost of $2100. This is a pretty widespread issue in these Pilots with varying mileage. I would expect much better from a Honda product.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Categories with enough reports to have a page of their own
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