2017 Honda Accord Collision Avoidance Problems

The multifunction ADAS camera module failed due to "Internal Error" at only 9 years old. This means that critical safety systems such as automatic emergency braking/lane keep assist malfunctioned and could not assist with avoiding collisions. I took the car to the dealer and they confirmed the issue, and charged me $2000 to fix this critical safety system.

Vehicle: 2017 Honda Accord EX Mileage at incident: Approx 30,000 Date of incident: Dec 10, 2025 Description of problem: While my daughter was driving our 2017 Honda Accord EX, the Collision Mitigation Braking System (CMBS) suddenly activated without warning. The car slammed on the brakes even though there was no obstacle in front of her.

The problem with the LKAS manifests in the following ways: The system unexpectedly disengages without warning, failing to provide lane-keeping assistance. Erratic steering corrections occur even when the vehicle is properly centered in the lane, causing instability. The system frequently displays error messages indicating LKAS failure, requiring manual intervention to reset or disable the feature.

The contact owns a 2017 Honda Accord. The contact stated while driving at an undisclosed speed, the Forward Collision Avoidance Dynamic Brake Assist activated unexpectedly. The contact stated that the message “BRAKE” was displayed.

The adaptive cruise system on this vehicle will get you rear ended real fast.

All wrong lights came on the dash and all components had failed. Took it to the dealership and they weren't able to diagnose, they reset the system and said that if it failed again I would need to purchase a Honda battery as it had recently replaced with another brand.

When Driving the car it will occasionally Brake when another car is passing in the opposite direction My local Honda Service technician can find no problems. When we deactivate t he CMBS(Collision Mitigation Braking System) the problem goes away.

Traffic was traveling at around 55 miles per hour. The car in front had to make a quick stop to avoid hitting a flagger that could not be seen due to the sun. My car that is equipped with Hondas forward collision mitigation system did not respond.

While driving on an interstate, I started reducing my speed as I was approaching my exit. Before I could exit, my car automatically came to a complete stop. I was rear ended by a truck that was behind me.

car locked down on roadway and would not respond to accelerator until brake paddle action, as it did not accommodate the transmission B mode drag and falsely detected a pending collision. plus it falsely detects exit lane markings as collisions and engages brake. Also does not factor in gravity in collision avoidance.

Lkas, acc and pre-collision braking all fail intermittently. I have taken the car to two separate dealerships for diagnosis. The first advised me to replace the optical camera, the second advised me to replace the microwave radar, but neither would affirm that the replacement part would eliminate the intermittent failures.

On October 14, 2023, several lights came on after starting the car up, including the ABS light. This had not happened before. We had just had the car serviced for an oil change 2 weeks prior.

This is an ongoing problem - -- On startup, the vehicle reports 4 system warnings that shut off the cruise control and ABS brakes as well as the other safety systems. This is an intermittent problem. -- The dealer states that the camera is dead and wants $2,500 to replace and calibrate it.

All 4 warnings came on about a month ago - no safety systems & no cruise control at all. I could drive 50 miles and they'd go off until eventually they did not. Now I find through the forums that this is very common for the 2017 Honda Accord & Hybrid!

The contact owns a 2017 Honda Accord. The contact stated that there was a failure with the Adaptive Cruise Control (ACC) and Lane Keeping Assist System (LKAS) system. The contact stated that while driving at an undisclosed speed, the LKAS and Adaptive Cruise Control messages were displayed.

The contact owns a 2017 Honda Accord. The contact stated that while driving at various speeds, the emergency brake warning light would intermittently flash on the instrument panel. One day while at a complete stop, the automatic emergency braking system activated without incident upon depression of the accelerator pedal.

The forward camera tied to ALL safety features (as well as cruise control) is defective. I have tried to replace at a Honda dealership twice since December of 2022; they tell me the part is backordered. Because the camera is defective, NONE of the safety features work; cruise control is also disabled.

Driving on the highway with the adaptive cruise control, lane departure warning, auto emergency braking and lane keeping assistance engaged the vehicle will occasionally initiate an un-commanded, unreasonably abrupt brake application for seemingly no reason and often with no other vehicles in the vicinity. I've noticed Honda has issued a recall for 2018-19 Accords for this exact anomaly.

All the warning lights came on in the dashboard. Took it to the dealer, replaced the steering sensor. Couple months later all the warning lights came on again.

There has been a recall on newer cars for the loss of power this is a similar to that problem.

While driving my car suddenly felt like it was braking. The car beeped but no brake light appeared as when it thinks I am going to run into something. There were 2 incidents with nothing in front of me.