2018 Honda Accord Brakes Problems

I own a 2018 Honda Accord equipped with Collision Mitigation Braking System (CMBS). The vehicle has experienced multiple instances of false collision warnings and phantom braking. The issue occasionally occurs when approaching overhead interstate signs. In most cases, the system flashes brake warnings briefly and then clears. However, on one occasion during rainy conditions a few years ago, the vehicle unexpectedly applied the brakes at highway speed with no obstacle present. The vehicle has undergone multiple camera calibrations (this may have also included the radar), but the problem persists. This creates a serious safety hazard, particularly at highway speeds where sudden braking could result in a rear-end collision. The issue appears to be related to false object detection by the ADAS system, potentially involving radar or sensor misinterpretation.

While driving in a busy area with pedestrians and other vehicles, my car hard braked out of nowhere to a complete stop for no reason. I was nearly rear ended. The adaptive cruise control shuts off completely after 15 minutes in use. Says to take it to the nearest dealership. Turning off and restarting the car gets rid of the notification.

The rear brakes on my 2018 Honda Accord Sport 1.5T (Six Speed Manual Transmission) have failed prematurely. This failure of the pads and rotors was confirmed, at the request of American Honda, by me at my local Honda dealer, and was documented in a response to American Honda. This occurred at 46,150 miles which i believe indicates a defective design in that the brake calipers, pads and rotors as a system were not built to the capacity needed to support Honda's design of this car that greatly increases the workload on the rear brakes. I am a very careful driver and minimize the use of brakes as a result. My calculation is that these brakes have failed at 1/4th the life that it would be reasonable to expect. The result is increased safety risk to car owners and drivers who do not act on this premature failure due to it not being normal or expected or affordable. Honda has effectively, through this brake design, implemented a need for car owners to enact a 750 repair on a frequency close to routine maintenance such as oil changes.

Car initiated emergency auto break while traveling on the freeway at high speed (70 plus mph) in Phoenix, AZ for no reasons. There were no objects or cars within 500 feet, however I was approaching an overpass. This occurred multiple times on the freeway and on local roads. Reported to Honda, no fix.

The contact owns a 2018 Honda Accord. The contact stated that when the vehicle was started and shifted to drive(D), the traction control and an unknown warning light were illuminated. The contact stated that the "Hill Start Assist Failure – Vehicle Might Roll Upon Brake Release” and “See Dealer Immediately” messages were displayed. The contact turned off and restarted the vehicle, but the warning lights remained illuminated. The vehicle was towed to a dealer, where it was diagnosed and determined that the head gasket was blown and needed to be replaced, and the fuel pump that was previously replaced was faulty and needed to be replaced. The fuel pump was repaired, but the head gasket was not replaced. The manufacturer was notified of the failure. The failure mileage was approximately 150,000.

The contact owns a 2018 Honda Accord. The contact stated that while driving at various speeds and depressing the accelerator pedal, the vehicle failed to respond as intended. The contact stated that the engine was revving, and the tachometer was showing an elevated RPM level before the vehicle slowly responded. The contact stated that there were several unknown warning lights illuminated on the instrument panel. Additionally, the check engine, traction control, and brake warning lights illuminated and remained illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the turbocharger needed to be replaced. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 143,000.

My car be braking and nothing be in front of me.It detects something in front of me when nothing be there.

I had been driving down highway and all of a sudden my car put on brakes hard. Thank goodness no one was behind me. I had dealer turn off that feature so it wouldn't happen again. I still experience my brake light flashing when nothing in road to brake for but doesn't brake on its own. Issue having now is issues starting car and once it starts I recieved a collision mediations issue pop-up on display saying see dealer now. Cruise control issue, and on dash has traction control saying ignitionating continue driving. The braking issue started right after purchase in 2018. The starting issue started yesterday 7/25/2025.

Parking brake suddenly engaged while in traffic car would not move. Car had to be towed brake pads were replaced but mechanic stated parking brake had defect that only the dealer can repair.

Driving down the road, no cars or obstacles in front of me. Out of nowhere the automatic emergency breaking came on. The car slammed on the breaks and very quickly came to a complete stop in the middle of the road. If there happened to be another car behind me they would have rear-ended me. There were no warnings prior to this happening.

The contact owns a 2018 Honda Accord. The contact stated that while driving at an undisclosed speed, several unknown warning lights illuminated. The vehicle was taken to a local dealer, where it was diagnosed; however, no cause for the failure was identified. The contact stated that while driving at various speeds, the vehicle jerked abnormally. The vehicle was taken to a local independent mechanic, and it was diagnosed and determined that the core pad needed to be replaced. The vehicle was repaired; however, the failure persisted. The manufacturer was made aware of the failure. The failure mileage was approximately 111,000. The VIN was not available.

My 2018 Honda Accord Sport has been experiencing issues with its automatic emergency braking system, specifically the Collision Mitigation Braking System (CMBS). The system has been activaing unexpectedly, causing the car to brake without an apparent reason. I’ve been trying to keep a list of locations that it has happened and it usually occurs under overpasses when the light changes from light to dark. I’ve reached out directly to Honda and the dealership and neither took my inquiry seriously.

While driving on the interstate, suddenly got 6 different ‘warning’ messages on the dashboard. Most of them involved the brakes. Emergency brake malfunction, brake hold malfunction, forward collision malfunction, adaptive cruise control malfunction, brake system malfunction (use of brakes may be reduced), and road departure mitigation malfunction.

The car is braking even when there is no obstacle or vehicle ahead. I have not driven at higher speed but I fear that if that happens, it can cause incident and injury.

CARS BRAKE/MDOULE AUTOMATICALLY ENGAGING. BRAKE LIGHT AND BRAKE SYSTEM LIGHT CONSTANTLY FLASHING. FROM WHAT IVE READ SEEMS TO BE A KNOWN ISSUE THAT NEEDS TO BE ADDRESSED OR MADE A RECALL. THIS IS A SAFETY ISSUE AND CAN CAUSE HARM TO THE DRIVER AND OTHERS.

While driving on highways, with no one in front of me, vehicle will brake while I have my foot on the gas. Vehicle says brake system malfunction. When I let off the gas and push again, it'll accelerate for a second, then brake again even though my foot is on the accelerator.

The rear brakes are horrible. They wear so quick. This is my 3rd Honda Accord and I’ve never replaced brakes this much on any Accord I’ve ever owned. Back tires also wear really fast. The rear brakes squeal really bad and makes squealing noises when I’m driving. No brakes are being applied but the noise continues. I’ve had this car for 3 years and I’ve changed brakes 3 times which is ridiculous.

Adaptive Cruise control - Collision Mitigation - Road Departure Mitigation - Vehicle Stability Assist - Hill Start Assist - Electric Parking Brake - Tire Pressure Monitoring.

The contact owns a 2018 Honda Accord. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. The contact stated that the check engine warning light, the brake light, and other unknown warning lights were illuminated. The vehicle was taken to the dealer, where it was diagnosed that the fuel injectors had failed. The dealer charged a fee for the repair; however, the contact declined to pay for the repair and advised the dealer to complete the recall repair. The vehicle was not repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure and referred the contact to the dealer for diagnostic testing. The failure mileage was approximately 96,000. Parts distribution disconnect.

I have a 2018 honda accord. I have had issues with it breaking and nothing being there. It has cause me to almost get rear ended several times and I find it to be a huge safety hazard. I will be driving down an open road and nothing will be in front of me. My car will randomly slam on the breaks and it scares me terribly. This has happened quite a few times now. At first I thought it was a fluke but it has continued to happen and is becoming a major issue.