2021 Honda Pilot · symptom sheet
Forward collision warning goes off or the camera drops out
- 53owner reports
- 62,000median miles
- $2,000median quote
- 2involved a crash
Newest report Sep 15, 2026 · checked Oct 2, 2026
53 of the 435 complaints on this car describe false collision warning.
Tick what matches of 53 reports
False collision warning on other Pilot years
Report counts are for each model year on its own, so a newer car has had less time to collect them. Model years with too few reports of it for a sheet: 2014, 2015, 2016, 2017, 2018, 2022, 2023, 2024, 2025, 2026.
What this problem usually is
This group is about the forward collision warning itself. Owners describe alarms with nothing ahead, a forward camera that fails or reports itself blocked, and other safety features shutting off at the same moment. A lot of them happen at highway speed, and a lot end with a dealer who couldn't reproduce it.
What got replaced
Owners who name the part that was replaced mention the forward camera (20 reports), the radar sensor (10 reports), the windshield (6 reports) and the software (4 reports).
Recalls and investigations
No recall on collision avoidance covers the 2021 model year as of Oct 2, 2026.
What owners paid
8 of the 53 reports quote a price. Each dot is one quote. The middle half runs $1,764 to $2,137.
When it happens
Too few of these reports state a mileage to give a range.
What owners wrote
“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 15, 2026
“Upon startup, LKAS, ACC, FCW and brake lights are illuminated and the corresponding systems are non-functional. This failed with less than 50k miles and the car was ~3 years old. This is making the car less safe to drive because some of the safety systems are non functional. The basic cruise control also does not work.”
Filed Nov 12, 2025 · 50,000 miles
“Recently , I stated seeing CMBC failure in my 2021 Honda Pilot 2wd. My car has 41500 miles in it. I took car to dealer ship and dealer ship says they are no recalls i need to change my camera. i am not understanding it's like brand new car and not driven many miles. i research on google and there are so many pilot owners having same problems. Can this be recall?”
Filed Jun 13, 2025 · 41,500 miles
“When driving the collision mitigation and brakes come on for no reason. Once when driving down a two lane road with a car coming in the opposite direction in their lane and I was in mine, the car braked. Then once getting on a road nothing coming nor any other vehicle around the vehicle did a hard brake. I just purchased the car last month and it just started happening.”
Filed Jun 23, 2023
Should you keep driving it?
This page can't tell you that. 2 of 53 reports involved a crash and 1 people were hurt. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.
Guide Taking it to a shop? How to describe this problem so it gets found
Other problems on this car
- Infotainment, screen or backup camera fails 78 reports
- Engine stalls or loses power while driving 75 reports
- Brakes on its own (automatic emergency braking) 47 reports
- Adaptive cruise or lane keeping misbehaves 37 reports
- Battery dies or the car will not start 31 reports
- Airbag warning light or recall 31 reports
- Brakes grind, pulse or wear early 27 reports