2021 Honda Pilot driver assistance problems

Filed Nov 8, 2026 · Driver assistance · SC

I had the front passenger side airbag recall completed on my vehicle on July 1, 2026. In August, approximately August 14 error messages started occurring whenever I cranked my vehicle. The error messages were collision mitigation system problem, road department mitigation system problem, auto high beam problem, adaptive cruise control problem, lane keeping assist problem. I was able to have the vehicle inspected at Stokes Honda in Beaufort and was told that it was the front facing camera failure. I have owned this vehicle for 2 years with no issues.

Filed Nov 1, 2026 · Driver assistance · OK

A cascade of warning errors suddenly appeared in my 2021 Honda Pilot. Lane keeping assist, adaptive cruise control, collission mitigation system, auto high bean, and road departure mitigation problem. The brake system light is also lit up. My mechanic said it is a "millimeter wave error" caused by one of the front cameras. After researching this, it seems that this is a common problem, and there is an active lawsuit.

Filed Sep 15, 2026 · Driver assistance · NY

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

Filed Sep 14, 2026 · Driver assistance · 75,000 miles · CA

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.

Filed Sep 9, 2026 · Driver assistance · NJ

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.

Filed Sep 7, 2026 · Driver assistance · VA

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.

Filed Aug 28, 2026 · Driver assistance · NJ

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.

Filed Aug 24, 2026 · Driver assistance, Electrical · CA

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.

Filed Aug 10, 2026 · Driver assistance · CO

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.

Filed Aug 8, 2026 · Driver assistance · CA

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 the federal safety agency 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.