Driving down Piedmont Road in Atlanta on an overcast morning with no pedestrians, obstructions or vehicles in front of the car, the collision avoidance and braking system engaged for no reason and almost caused the car behind mine to run into me.
2021 Honda CR-V: false forward collision warnings
17 of the 342 complaints about the 2021 Honda CR-V describe false forward collision warnings.
- owner complaints
- 17
- of this car's complaints
- 5%
- typical mileage
- 30,000
- recalls
- 0
Is there a fix? No recall or service bulletin covers this area of the car yet.
False forward collision warnings by model year
What owners say
The contact owns a 2021 Honda CR-V. The contact stated that while parking, and the brake pedal was depressed, the vehicle accelerated inadvertently up a slight incline and collided with a stone boulder/wall. Neither the contact nor the passenger sustained injuries. The contact stated that no collision warnings were activated to detect the collision. The air bags did not deploy. The vehicle was towed to a dealer, where the failure could not able to be replicated. The vehicle was then towed to an independent mechanic, where the vehicle has yet to be diagnosed. The manufacturer was not notified of the failure. The failure mileage was approximately 56,000.
I am reporting a serious safety issue with my 2021 Honda CR-V involving the Collision Mitigation Braking System (CMBS). On multiple occasions, the vehicle has applied the brakes suddenly and forcefully without any obstacle or vehicle in front of me. THIS HAD HAPPENED OVER 20 times since i bought the CAR on March 10 2024. The most recent incident occurred while I was driving at highway speed on a clear, dry day. The CMBS system engaged abruptly, causing the car to decelerate rapidly and SLAMED BREAKS automatically. There were no vehicles, pedestrians, or obstructions ahead. This unexpected braking could have easily resulted in a rear-end collision, endangering me and other drivers. I have kids in the back sit and the car behind us almost hit my car. I am afraid the result might have been much worse if there was TRUCK behind my car. I took the vehicle to the Honda dealership, but they were unable to replicate the issue and did not offer a fix. They also mentioned that unless the problem could be duplicated, any diagnostic or repair fees would not be covered, despite this being a known issue under investigation by the federal safety agency. I am aware that the federal safety agency has an open Engineering Analysis (EA24-002) into this very issue affecting millions of Honda vehicles. I’m deeply concerned that this problem continues to put drivers and passengers at risk and believe a formal recall is necessary. I request that this issue be escalated and that Honda be held accountable for a fix before someone gets seriously injured or killed. Please contact me if additional details or documentation are needed.
The contact owns a 2021 Honda CR-V. The contact stated that while her daughter was driving at an undisclosed speed, the Collision Mitigation Braking System (CMBS) independently activated, causing the vehicle to suddenly come to a stop, and the front driver’s and front passenger’s side seat belts to independently lock. The contact stated that the brake warning light was illuminated. An appointment was scheduled with the dealer to inspect the vehicle. The vehicle was not repaired. The contact related the failure to the federal safety agency Action Number: EA24002 (Forward Collision Avoidance). The manufacturer was notified of the failure. The failure mileage was approximately 30,000.
My 2021 Honda CR-V has experienced incidents where it suddenly and unexpectedly applied the brakes while I was driving, despite: - No vehicle, pedestrian, or object is present in front of me - No driver input on the brake pedal - Not using cruise control at the time My car occasionally jerks or shows warning lights before stopping, sometimes without any warning. I suspect an issue with the Collision Mitigation Braking System (CMBS) or related driver-assistance components. These braking incidents occurred under normal driving conditions and pose a high risk of being rear-ended. My car's issues remain unresolved, and I feel unsafe while driving my vehicle. Two dealerships conducted four diagnostic tests (on 18, 19, 21, and 24 May 2025) to evaluate the Honda Collision Mitigation Braking System (CMBS) and the associated driver-assistance components. But no issues were identified during these evaluations. - 23 May 2025, I discussed my car’s issues with a Honda Case Manager (in California). He did not accept any responsibility for the reported Honda braking issues. - 27 May 2025, I filed a formal complaint with Honda Customer Service. Honda has not taken any action to address my car’s issues.
On at leas 8 occasions in the past 3 years the Automatic Braking System (Forward Collision Avoidance System) engaged with audible warning while on the interstate driving at highway speeds unexpectedly with no vehicles or other obstructions in my lane in front of me. The majority of occurrences were as I was attempting to pass in the left lane, but on at least 2 occasions there were no cars to the left or right of me. The sudden braking could have caused a serious collision. I have not brought the problem to the attention of a dealer or independent service center as I doubt they would be able to reproduce or confirm the issue, as I have experienced before on intermittent issues before. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear
The car's forward collision warning system is defective. The car will randomly bring up "BRAKE" on the dashboard with nothing even close to the car. This has started happening many times over the past few weeks, with even at least one instance of the car braking on its own. I brought this up to the dealership during my last oil change recently, and they inspected and looked into it. They said there was nothing wrong with the sensors/system and they documented it (specifically saying no problem found vehicle is operating normally at this time). However, a day or two after the dealership, the problem returned and it continues to persist. In addition to this, the blind spot warning system also randomly goes off when nothing is nearby, but not as often as the braking system, which is more dangerous in my opinion.
The forward collision warning and braking has activated a couple of times without any car front of me for a wide distance or when everything is all clear. It also happened a couple of times when turning a curve or exiiting, also without any car in front of me. The only thing I could notice was the dashboard flashing but I could not read it because I had to focus on the road.
The contact owns a 2021 Honda CR-V. The contact stated while driving at an undisclosed speed, the Lane Departure warning light illuminated. The contact also stated that the Forward Collision Avoidance: Automatic Emergency Braking feature was activated inadvertently without other vehicles nearby. The dealer was contacted, but the vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 56,000.
 The contact owns a 2021 Honda CR-V. The contact stated that while driving at an undisclosed speed, the forward collision avoidance sensor failed to brake causing the contact to crash into another vehicle. A police report was filed. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 19,000.
My car has done this phantom braking multiple times before, however this time it managed to pull my car into a curb and pop my brand new back tire and ruin my front tire. This is a huge safety issue because if there was anyone in front of or behind the car could’ve caused a major collision. I have done some research and noticed this has been an issue on previous years of my vehicle. I feel unsafe driving my car and my dealership has basically told me there is nothing than can do and that is not acceptable with me. The fact that my life was put in danger due to a malfunction with the forward collision warning is absolutely ridiculous. I will probably never buy another Honda if something is not done to correct the issues.
The contact owns a 2021 Honda CR-V. The contact stated while driving 40 MPH, the Forward Collision Avoidance: Dynamic Brake Assist activated, and the vehicle came to a sudden stop without another vehicle nearby. The vehicle was not diagnosed or repaired. Neither the dealer nor the manufacturer was contacted. The failure mileage was 40,000.
Related recalls
No recalls on record for this model year.
Questions about the 2021 Honda CR-V collision warning
Is false forward collision warnings a common problem on the 2021 Honda CR-V?
17 of 342 owner complaints about the 2021 Honda CR-V (5%) mention false forward collision warnings. The model year with the most reports is 2017.
Is there a recall or service bulletin for this on the 2021 Honda CR-V?
There is no recall or service bulletin for this area of the car on record.
Other symptoms on the 2021 Honda CR-V
Jerking 27Adaptive cruise 19Loss of power 19Check engine light 18Fuel pump 15Lane assist 12Warning lights 12Phantom braking 11Misfire 9Steering noise 9Sunroof shattered 9Stalling 8ABS 5Hesitation 5
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