2021 Honda Accord Brakes Problems

Your car's automatic braking system is randomly activating and applying the brakes without any vehicles or obstacles nearby, causing the brake warning light to flash on your dashboard. This happens frequently at unpredictable times, even on highways, and you cannot stop it once it starts. The issue removes your control over the braking system and creates a safety hazard. The fix will likely involve diagnosing the forward collision sensor system and potentially recalibrating or replacing the automatic emergency braking components.

It makes false things there is no car but it brakes by self for nothing

I was driving northbound in on I15 in Salt Lake City when a Home Depot Bucket blew into my lane. I slowed down to change lanes when the Collision Mitigation Braking System (CMBS) deployed without warning, bringing my car to an almost stop causing a semi tractor trailer to hit me from behind.

What component or system failed or malfunctioned, and is it available for inspection upon request? The vehicle’s collision avoidance automatic braking system is malfunctioning. It engages unexpectedly while the vehicle is moving with normal traffic flow. The system is still installed and fully available for inspection upon request. How was your safety or the safety of others put at risk? The automatic braking system activates suddenly and without cause while I am driving at typical speeds (approximately 40–60 mph) with the flow of traffic. This unexpected braking creates a serious risk of rear-end collisions, both endangering me and putting other drivers at risk of crashing into my vehicle from behind. Has the problem been reproduced or confirmed by a dealer or independent service center? I have reported the issue to the dealer, but they have been unable to replicate the problem during their inspections. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? No, the vehicle and its braking system have not yet been inspected by the manufacturer, law enforcement, insurance representatives, or any other third parties. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? No warning lights, messages, or other indicators were present before the issue occurred. I purchased the vehicle last month, and the problem with the collision avoidance braking system has been present consistently since then.

Dashboard showing brake system issue. See dealer. Took it to dealer they advised changing brake sensor

The contact owns a 2021 Honda Accord. The contact stated that while driving at 60 MPH, the vehicle's auto braking applied without warning. The vehicle was rear-ended by a possible 2024/2025 Buick Envista. The driver of the Buick left the scene of the crash. The brake warning light was flashing. The contact stated that the failure was related to NHTSA Action Number: EA24002 Forward Collision Avoidance. There were no reported injuries, air bag deployment or fire. A police report was filed. The driver was able to continue driving. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was 71,080.T he VIN was invalid.

Car says “brake system problem, brake performance may be reduced. See your dealer” and then another one saying “brake hold system problem. Apply brake when stoped. See your dealer” and another one that says “Electric parking brake system problem. Parking brake not available. See your dealer.” And I know quite a few people with accords that are having this issue as well!

I was driving on the freeway and suddenly my ABE brake activated and I was almost being hit in the back . It was happening many times in the past but when I brought the attention to the Honda dealer and it said nothing was wrong with it

The contact owns a 2021 Honda Accord. The contact stated while driving at approximately 30 MPH, the vehicle stalled. The braking system warning light was illuminated. The failure had occurred on several occasions. The vehicle was taken back to the residence. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 77,156.

Brake noise from rear whenever backing out. After several visits to Space Coast Honda was assured it is nothing. Because it is getting worse and braking involved, I am concerned. This began with purchase of vehicle and continues today. Wrote letter to American Honda Motor Co in July of 2023 but never received a response.

On four occasions I was required to slam in my brakes to avoid hitting a car in front of me on major highways in Virginia. When engaging the brakes the antilock brakes did not engage, the idle system (such as when you come to a red light and brake cuts the engine idle) kicked in and I lost the ability to steer. I had to release the brake for the idle to re-engage then hit the brake again. I finally was able to stop but left approximately 6 feet of skid marks on the highway. I have reported this to my dealership for them to say brakes are performing as designed and they did nothing. My car has been at the dealership for 2 weeks and I’m driving a loaner. Rear brakes have high pitch noise when backing up but dealership said they can’t recreate it therefore will do nothing. I had one service manager say he did recreate the noise and was fighting to get rear brakes replaced but then called back to say “I misspoke and Honda did not hear the noise so not replacing rear brakes. All phone messages are recorded on my cell phone. I have filed a complaint with Honda Corporate and also called local law enforcement to see where liability falls if my brakes fail again and I hit someone (faulty equipment charge). Was informed by police to have all service orders in the car to confirm I did all I could to get my brakes fixed. So three trips to dealership, almost 4 accidents, and car has approximately 24k miles on it. No idea if this is a sensor problem or several interactions between all the different systems but this is a major problem. Your engine shouldn’t cut off and cause steering problems when you brake the car and are still moving forward. No one can give me options with this car other then trade it in and get something else. This is not acceptable. Someone could be seriously injured. I don’t want to be that driver.

The electrical emergency brake locked up without warning as I was coming off the highway by the way of off ramp. Almost put the car in the guard rails! Brake has locked up twice now

The contact owns a 2021 Honda Accord. The contact stated while driving 45 MPH, the vehicle was shuddering and vibrating with an abnormal sound. The contact stated that while shifting into reverse there was a loud roaring sound coming from the brakes. There were no warning lights illuminated. The contact drove the vehicle to the dealer to be diagnosed. The contact was informed that the rear rotors need to be replaced and that the brakes were overheating. The vehicle was repaired but the sound from the brakes returned. The manufacturer was notified of the failure. The failure mileage was approximately 21,000.

My car randomly slams on the breaks with no one/nothing in front of me! I’ve reported this to the dealership multiple times. This last time it occurred it brought me to a complete stop in the middle of the road.

My car is not even 1 year old and I have been having problems with my rear brakes. They squeak or grind when I am in reverse and with my foot on the brake pedal to back out of a parking spot or drive way etc. I have taken it to the dealership, Right Honda-Scottsdale Az, 3 different times. They said they could not reproduce the sound. The service guy on my first visit said that if it continues they should replace rear brake pads and deglaze the rotars.Never happened. Left it there overnight, at Honda Corps direction, again the same thing. I spoke with Patrick at Honda and I sent him an email with a video of the sound from outside the car as well as inside. He got back to me last week and basically said there is nothing they can do. I have taken it to a car repair place that I have been going to for 30 years and showed them the video and they said that in there opinion the pads should be changed and rotors deglazed. I explained that to Patrick from Honda and he said they would not do that since they are not sure it would work. Asked him what they would do and he attributed it to either weather etc. Told him I have had at least 10 accords and never had this problem. The car is less than a year old with just 10000 miles on it, less when I first took it there. Really not sure what the issue is but it is very concerning since it concerns my brakes.I have tried to upload the video but I cannot. You can email me and I can attach it.

21 Accord breaking itself there is no reason and there is no car around. Blind Spot working itself there is no car around car. Almost had 4 accidents. Not driving anymore waitin attorneys for lemon law

My vehicle has less than 5,000 miles. My vehicle has been running fine for the last 5 months; however, I got back into my car and heard my rear right brake, on the passenger side, making a grinding sound. It appears that the break pad is worn out and grinding on the rotor, or the brake module is faulty and has been forcing additional pressure on the rotor to create and untimely wear. The grinding is so strong, it is making it unsafe to drive under normal conditions. No warning lamps or indicators are on. Warranty inspection is scheduled. There are other reports of this issues with other owners. The vehicle has not been in an accident, modified, or driven in any manner other than normal driving. Additionally, when it is raining, the auto brake feature may turn on and slow the vehicle quickly when it is not necessary.