Cruise Control problems of the 2018 Honda Accord

July 2020, adaptive cruise control (acc) system DE-active while I was driving at approx 65mph. Received dash board message �collision mitigation braking system problem. See your dealer� . Warning went away after restarting vehicle. Dealership could not replicate warning. Nov 2020 acc system again failed, three times, similar circumstances, highway 65-70 mph, restarting again cleared warning. When system fails the cruise control element turns of, and cannot be reactivated. Also, car slows down quickly, because set speed is not maintained. ( potential rear end collision situation) car was purchased new in Nov 2018, not problem detected until early July 2020. Problem has not been resolved as of Jan 2021.

I was following my wife's car on the expressway. Her speed was 55 mph. I had the adaptive cruise control (acc) on my vehicle set for 70 mph, so naturally I was only �pacing� her at her slower speed, about four car-lengths back. Suddenly, my car accelerated rapidly toward my wife's car in front of me. I had to hit the brakes to avoid a collision. At that moment, a warning appeared on the instrument panel stating that radar obstructed. But even then, I was able to recreate the same scenario four more times before turning off acc for the rest of the trip. I also noticed that while the car was surging forward, the instrument panel indicated that there was no car in front of me, even though there clearly was. It was almost as if my car �couldn't see� and decided to accelerate anyway. The system should have failed in a safe manner, but it clearly did not.

Was driving down the road after getting coffee with active cruise control on and a message popped up saying " collision mitigation system fault" please visit dealer", I've read that it can get bug juice on it and cause it to say that but I wiped mine off and it is still saying that after I restarted the car, have read from many car groups that this happens alot with these cars.

The collision mitigation braking system and adaptive cruise control system has thrown an error and stopped working 5 times now. It has happened to me on long road trips on the highway at speeds of 50+ mph. It has happened less than 30 minutes after starting the vehicle and sometimes after 2+ hours of driving. The weather conditions have ranged from cloudy to fine (no snow or rain). This is extremely dangerous to have happen at highway speeds in traffic.

While driving on highway at 65 mph with cruise control on brakes suddenly applied themself nearly causing a vehicle to strike me in the rear . Several alarms were displayed on dash first was adaptive cruise control second collision mitigation braking system third departure mitigation system problem all alarms said to see your dealer . I took pictures with my cell phone of all alarms displayed but I'm having difficulty uploading to report . I can send a attachment specific to the claim if needed or if a email could be given I would forward such.

Under certain driving conditions when the car is slowing down while using acc (cruise control) the system will fail causing the brakes to disengage. Ever time this happens 3 times so far I was driving at the posted speed limit. Most time the speed limit was 55 mph. Traffic went from posted limit to an almost complete stop. The car would start to slow down then the system would fail, allowing the car to continue forward almost causing a collision. The message "collision mitigation braking system problem see your dealer" is displayed. Honda has a TSB 19-051 that talks about the issue. When I took the car to dealership about issue they refused to do the TSB.

Honda's collision mitigation system shuts down, disallowing cruise control and all safety features that are included in the collision mitigation system. Dealer cannot find cause. Turning off the car and restarting it resets it, but when it turns off, there is no clear factor as to why it happened. There is a safety risk if you are using cruise control, as it could fail to brake when the car in front of you slows down. It has happened 4 or 5 times in the past 8 months since I bought it brand new.

Adaptive cruise control (acc) fails during use, the vehicle can automatically accelerate to a set speed and slow down when it senses a vehicle within a close proximity. When the acc is active and after a few times of needing to automatically slow down when another vehicle is in front of the vehicle, the system shuts down and an error message appears, " collision mitigation braking system problem. See your dealer". I've taken the vehicle to the dealer and there was no fix to the problem, my vehicle is still currently under warranty and I was disappointed that there was no fix to this problem. The date listed below was the most recent date that the same incident occurred, I took the vehicle in to south motors Honda dealer back in 2018 shortly after purchasing the vehicle.

Multiple errors involving vehicle's collision mitigation braking system (cmbs). Cmbs system fails regularly (approximately every 120 miles of driving) during routine use at freeway speeds. System failure shuts down adaptive cruise control (acc), collision mitigation braking system (cmbs) and displays error to "see your dealer".

Active cruise control (acc) failed while driving approx. 40 mph. Approaching the vehicle ahead of me which was rapidly slowing/stopping, the acc failed to slow my vehicle which forced me to manually apply hard braking at the last moment to avoid a collision. When I looked down there was an error message on my instrument cluster which read "collision mitigation braking system problem. See your dealer". The weather at the time was clear and 62 deg. F, and the vehicle was clean with no dirt nor obstructions on the front radar unit nor the windshield (camera area). The acc could not be restarted until I pulled the car over and shut it down/restarted it, which then cleared the error message and enabled me to reinitiate the acc system. This is a significant safety defect!.

On 2018 Honda Accords the adaptive cruise control which is standards on all trim levels, does not brake the vehicle to maintain the set speed when going downhill. This is odd since the vehicle will apply brakes to maintain speed if there's a vehicle in front of the car, but on downhills all it will do is make several downshifts to try and maintain the speed. Every other car I've driven that has adaptive cruise control will apply brakes to keep the vehicle speed from increasing in an uncontrolled manner. Of course if you tap the brakes yourself cruise control is disabled. A simple software update would resolve this issue.

I engaged acc, that controls cruise control and frontal collision ,mitigation system, in normal traffic. While travelling at a speed of 60 miles per hour, following another car the spacing was controlled by acc. The car in front of me continued forward, my braking system engaged and caused me to go from 60 mph to about 35 mph. The vehicle to my rear had to take an evasive maneuver to avoid an accident. I saw no road debris. I pulled over to check the radar unit and the camera system. No issues observed. During this trip the acc went offline 3 times down to SC and twice it failed driving back home. Each time I was in traffic and caused issues as the system was trying to manage my speed in traffic.

On 2/14/19, I was driving on a city street in a straight line at approximately 40mph. The car ahead of me stopped. I stepped on the brake and instantly the dashboard warnings lit up - adaptive cruise control, collision mitigation braking system, road departure mitigation system, and the brake - and the brake did not work so I could not stop. I rear-ended the car in front of me doing significant damage to the front of my car. The warnings were still visible after the crash and I took pictures of the dashboard as best as possible. The warnings say something about system not working and to see a dealer. The same warnings appeared on 2/13/19 in the afternoon but disappeared on 2/14/19 in the morning. Other warnings of safety systems not active have appeared due to ice/slush but then cleared when the sensors were cleared, but these new warnings are different. At least twice, maybe three times in the past few months, the car would suddenly brake and slow down with nothing in the road or in front of the car. My bluetooth connectivity worked fine for first 2-3 months but then stopped and I couldn't reconnect the phone over the past two months. It seems like more than one system/electronics problem and seems like the warnings appeared at the same time as the brake not working as if it was more than an alert but a system (systems) no longer functioning at all. The brake worked after the accident when the car was restarted.

My collision mitigation system randomly fails which pops up an alert and disables my adaptive cruise control and automatic braking. It has happened various times when adaptive cruise control has been engaged with different environemental situatuons (day and night, sunny and cloudy). Turning off the engine and restarting typically corrects the issue for a time but it continues to fail intermently.

Car is 2 weeks old and I've had the cmbs which controls the autobraking and adaptive cruise control go off 4 times with the failure warning and to see the dealer for inspection. Each time was under a different set of environments including at night, a cloudy day, rain, and sunny. It seems to fail within 10 mins of the first time the adaptive cruise is set. The green light that indicates the system is working goes off and turns to orange. I've contacted the dealer for repair but online searching shows both dealers and Honda do not have a fix.

Vehicle running, both driving and stationary, dash indicated three warnings: "adaptive cruise control system problem", "collision mitigation braking problem", "road departure mitigation problem". All three systems were nonfunctional. Dealer advised to drive through a car wash before coming in for repair. The car wash appears to have worked, but this is absurd! every time it rains or car is dirty, the safety features don't work? didn't see this disclosure when I bought the car or when I paid for these features.

Leased 2018 Honda Accord in October, 25 miles later had checked engine light on,took it back to the dealer,emission hose wasn't attached properly. After 900 miles the wheel alignment went out ( I did not hit any pot holes) took it back to the dealer, According to the dealer one the rod wasn't set right, now it's January 2019 and have 4000 miles yesterday the car started to supporter and all the warning started flashing auto high beam, adaptive cruise control, collision mitigation, road departure mitigation. . . . All this sing said see your dealer. . Guess what I called the dealer first thing this morning. . Today is January 24 2019 still waiting to hear from the dealer all this technology is totally useless. . . I had 2002 Honda Accord with 310,000 miles and no technology.

Collision mitigation braking system problem,car brakes by its self ,was driving at 75mph and car slamed on brakes to 35 on us 71 almost caused an accident. Also monitor on dash that has home ,nav,audio settings shuts off by its self and reboots. Braking problem happens on cruise control and normal driving. I photo the dash 5 times when collision mitigation went off in a 5000 mile period .

In the states where it snows, the car collects large amounts of snow on the front, and knocks out the radar system for the lane departure detection system, witch also is for the braking system, that helps with cruise control and any close encounters. I am not sure if it actually affects the cruise control because in the snow is not a time to use it.

The collision mitigation braking system has completely failed twice on my month old 2018 Honda Accord. When this fails, the cruise control is also deactivated. Both times the car was in motion with the adaptive cruise control active.

Adaptive cruise control(acc) stops working with error "collision mitigation braking system problem. See your dealer. "I was driving on interstate at 60mph with acc on and suddenly the error pops out. Error goes way when you restart the car. But repeats again intermittently. You cannot use acc again until you restart the car.

While driving with the cruise control on the collision mitigation and braking system will intermittently turn off and disable the cruise control. Dealer says nothing is wrong, claim the sensors are overloaded. This can happen on bright sunny days, cloudy days and at night. Sensor on front of car is clean; no bugs, smears or liquids. Will reset with a stop/start of the engine. Code check revealed. Uo401-53 temporary stop of integrated driver support system -- received stop request by pgm-fi system. Error code 401-93 temporary stop of integrated driver support system -- received stop request by pgm-fi system. This happens only when the cruise control is on and moving. This has happened at least 12 times in the past 8 months, most recent was today.

Two separate issues: 1) with only 2,400 miles on the Accord, on October 7, 2018 it suddenly lost power 2 or 3 times over a 60-mile stretch of the busy 405 freeway, each time slowing from 65 mph to approximately 30 mph or less despite maintaining even pressure on the accelerator. The car did not respond to pressure on the gas pedal. No cruise control was used at any time. The sudden deceleration could have caused a serious accident. 2) on November 30, 2018, I attempted to resume motion after stopping for a red light. The Accord's gas pedal failed to respond for approximately 5 to 6 seconds, then suddenly lurched forward. This also could have caused a serious accident.

While driving at highway speeds with acc (adaptive cruise control) enabled and lkas (lane keep assist) enabled and passing a car and another time an 18 wheel truck, the car suddenly and abruptly braked to slow down 5 mph. The road was straight and no cars were in front of me. This was a very dangerous situation because cars were behind me and they all had to react to slow down. T.

Monday September 24th, 2018, I was traveling on u. S. Highway 19 and a vehicle turned off about a half mile ahead of me while I had the cruise control engaged. The vehicle had completely cleared the road and my car slammed on brakes causing everything in the vehicle to be thrown into the floorboard. Had there been a car behind me, the car would have rear-ended my vehicle. There continues to be an issue where the sensor recognizes something in the road that is not there or a vehicle that has already cleared the road and slams on brakes. This creates a serious safety issue and is damaging on the brakes. I do not feel safe driving with this system engaged because I do not know when the vehicle will slam on brakes causing other drivers to rear-end me.

Collision mitigation breaking system fails during operation of adaptive cruise control. The vehicle will no longer verify if a collision is going to happen, and can cause the vehicle to collide with a forward vehicle.

I have had several occurrences of a warning that states "collision mitigation braking system problem. Please see your dealer. " this error message will pop up randomly with no pattern while using the advanced cruise control function on my vehicle. While this error is present I am not able to use any kind of cruise control settings. I was have seen my local Honda dealer about this issue multiple times and have been given many horrible solutions. I have been told to just pull the vehicle over and restart it to clear the errors out. I have also been told by my local dealership that the camera is just dirty and that I need to carry a bottle of water and a rag to wipe off the windshield anytime it happens. I have tried both of these solutions several times and neither has worked. In fact every time I attempt to turn off and restart my vehicle I have eight other safety system failure messages that populate.

Tl the contact owns a 2018 Honda Accord. While driving 70 mph with the adaptive cruise control function engaged, the vehicle decelerated. The contact stated that the failure recurred several times. The contact stated that the instrument cluster blacked out on several occasions. The vehicle was taken to zimbrick Honda (located at 1601 w beltline hwy, madison, WI 53713, (608) 273-2555) to be diagnosed, but the mechanic was unable to retrieve a fault code or duplicate the failure. The vehicle was not repaired. The manufacturer was contacted. The approximate failure mileage was 2,000.

I have a 2018 Honda Accord 2. 0t touring. I have numerous incidents where the collision mitigation braking system has gone out giving an amber dash warning to see the dealer. This has happened 6 times all when the adaptive cruise control was engaged. It also disabled the cruse control. All 6 times I was driving on the interstate. The road was flat and straight and it was a clear sunny day with no other car in the vicinity . The radar unit and camera were free of bugs. Most times, upon shutting off the car and restarting everything returns to normal. However, one time upon restarting the car the phone ,radio navigation, adaptive cruse control, cruse control and collision mitigation braking system would not come back and I had to take the car to the dealer. This car was taken to Honda of el cajon, CA on 4/21/18 and chapman Honda, az on 7/31/18 and 7/3/19. No problem was found all 3 times.

Three times during the first 1500 miles the collision mitigation braking system has failed, disabling that feature and adaptive cruise control, displaying a large diagnostic on the electronic dashboard and telling me to see my dealer. In all cases I was driving in normal traffic on northern California freeways at cruising speed (twice on 101, once on 80). The first two failures occurred during daytime, the third at night. The weather in all cases was normal (no rain, snow, mud, . . . ) . When I visited the dealer after the first two occurrences (when the car is turned off and then back on the condition clears) the dealer found no diagnostic codes or other problems. Then the problem occurred a third time. The dealer and Honda corporate say they have no idea how to fix it because of the absence of diagnostic codes.