2024 Honda Prologue Driver Assist & ADAS Problems

On April 5, 2026, I was stopped at a busy intersection waiting to turn left. When I proceeded through the light, the car's sensor suddenly went off and the car braked violently. I thought I had hit something in the road. (I was driving in one pedal mode). There was nothing in the road, and I had not collided with anything. The car just decided to brake because it incorrectly sensed something in my way. I was almost rear ended, and it was very frightening. My safety was at risk as well as the person behind me. I have an appointment with the service department at the dealership to address it. This car has been in for service 5 times in the 18 months I have leased it. I have complained to the dealer multiple times, and they have basically ignored me.

Direct cause - Unknown. What I do know however was that the automatic emergency break system on my vehicle was activated, causing the vehicle to stop in the middle of driving. This resulted in the vehicle behind me hitting my car. Prior to the incident occurring, no warning indicators (lamps, messages, etc.) came from the dashboard. The vehicle just stopped. Immediately after this accident occurred. I turned off the forward collision safety feature, as I was scared of the issue (vehicle stopping) repeating itself. To date, my vehicle has not been repaired or my insurance agency contacted, as I do not believe I should be held responsible for the cost of this repair.

While driving the car this evening, following a day of driving, the info tainment and dashboard screens went blank while on the highway. Pulled off at the first exit (30 miles down the road or so). Tried: - turning car off and on - turning off, opening drivers door for one minute, closing and restarting - the same, but waiting 5 min after opening and closing door - the same, but the using the remote lock to lock the car after closing the drivers door - holding down the radio power button for up to 2 min Drive finished by foijf slowly on local roads. No speed information. No warnings systems available.

The system does not reliably "see" pedestrians or cross traffic or often times will phantom brake when there are no obstacles viewable. I believe this is a substantial safety issue because the car will abruptly stop without warning and engage a parking brake, creating a delay before being able to vacate traffic. This has happened going forward, but more frequently in reverse. This appears to happen more during inclement weather or in the dark.

1. Parking sensors will go off at the most random times. The most common is when I’m at a standstill at a traffic light and the front parking sensors will start beeping as if I am as close as possible or about to hit an o next in front of me. 2. Rear parking sensors consistently alert and beep when there is nothing behind me. For instance I was backing out of a parking spot with no cross traffic or anything behind me. As I was trying to back out it slammed the breaks and came to a sudden stop. It did this again until I pulled the car back into the parking spot and backed out again. This will also happen when I am backing the car into and out of my garage. I don’t have anything beside me or within the guide lines but it will out of nowhere come to a sudden stop and not let me back up anymore. 3. I had one instance of emergency breaking. We were coming to a stop when out of nowhere the emergency breaking stopped the vehicle. We were at a slow rate of speed at this time. Maybe 10mph when it slammed the breaks on to come to a complete stop about 10 yards behind the vehicle in front of me. It did this twice within a few second period causing a motorist behind me to almost hit me.

Automatic Emergency Braking often triggers for no reason when backing up this vehicle. This is a safety issue 1) Random stops in a parking lot are disorienting to both the driver of the car and the drivers around them 2) The AEB system creates a very hard stop. During the last incident I was with my father who had recently had neck surgery and had additional pain for about 2 days after the false AEB trigger. Thankfully, it did not trigger any long term complications.

The issues I am experiencing for approximately the past five to six months include:- Forward Collision System showing the message “Forward Collision System Unavailable.” Adaptive Cruise Control displaying “Adaptive Cruise Temporarily Unavailable.” Rear parking safety system applying sudden braking even when there is no pedestrian, vehicle, or object nearby. Even when the system is set to “Alert Only,” the vehicle still applies the brake unexpectedly.

Every day when backing out of the driveway the car activates the rear emergency breaks as it “sees” my neighbors parked truck across the seat. At no point is my car anywhere near th parked truck. Also, the emergency brake activates multiple times.

I got several false positives from the radar or perhaps optical system that caused the vehicle to spontaneously and suddenly brake at freeway speeds. I believe it was the optical system that was at fault due to the shifting lines on the freeway but I can't be sure. I got the radio update service bulletin work completed by the dealership and it seems to have abated. However, any 2024 prologue that has not received the update is subject to the same error. From what I understand, Honda has stopped performing the service bulletin at this time due to update failures that have "bricked" the car's software.

Forward collision warning system activated Automatic Emergency Braking system and brought car to an immediate stop. This has happened multiple times for no reason. Sometimes it will activate on a street with no other vehicles, today it almost got me rear-ended in traffic.

Frequently engages erroneously due to heavy rain or pavement markings. Last week when it was raining heavily, AEB engaged at least 10 times while I tried to back out of my garage (there was nothing/nobody in my driveway). And this past Friday it engaged 3 times on different colorings for patched pavement cracks in a parking lot while backing out of a parking spot.

Crawling in traffic at low speed 5-10 miles per hour when the auto emergency brake initiated a complete hard stop for no reason. I was not in danger of hitting the car in front of me. Car braked so hard that I thought I had hit something.

Driving very slowly with plenty of distance from me and the car in front of me, car's auto emergency braked HARD. Thought this was a one off but this happened it my other Prologue this week (we own 2) so I decided to report. Scary event that makes you think you hit something and could potentially cause whiplash

Adaptive Cruise Control works when you set the preferred speed but won't slow down when a vehicle is in front. Tried changing gap adjustments but still not slowing down when there's a vehicle in front. It was completely working while I was driving it in the morning then in the afternoon I almost hit the vehicle in front of me due to my vehicle not slowing down.

What component or system failed or malfunctioned, and is it available for inspection upon request? The emergency break system abruptly activates. It has happened on reverse and going forward. One of the times it happened while on reverse it was raining so I thought that was the issue but it has happened on other occasions too. While going forward it happens when I am in fact getting close to a car however there is no risk of a crash and the system over reacts. Instead of allowing me to break on my own smoothly it goes to a complete stop unexpectedly. How was your safety or the safety of others put at risk? The sudden breaking hurts my neck and back, and that of my passengers. It also puts my car at risk of getting rearended by the car behind me due to the sudden and complete stop. Ignoring the crying children that get scared by the sudden stop and think there has been an accident. Has the problem been reproduced or confirmed by a dealer or independent service center? No. I emailed the sales rep this morning to complain but no response yet. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No.

Very frequent and sudden breaking when no objects or any moving vehicles in the line of sight. This keeps happening and I am not able to use the safe system as is without turning it off

The vehicle's backup sensors exhibit excessive sensitivity when reversing from a garage or parking space. My vehicle engaged the emergency brakes automatically despite the absence of nearby cars or pedestrian obstacles.

While approaching a red light on a busy road the forward alert triggered and auto breaking was engaged with no vehicle in front. Almost resulted in an accident. Had the light not been red other cars near me may not have been breaking.

On multiple occasions the alert for either the forward or rear collision warning system will sound with nothing either in front of or behind the vehicle. In these cases, the car automatically braked and brought the car to a stop in the middle of my driving. The component is not available for inspection. This puts myself and others at risk by completely overriding my ability to control the vehicle until I am able to put the car back in gear and begin moving again. It completely immobilizes the car for several seconds. It is also a safety hazard because I have been forced to turn off the automatic braking for both the front and rear collision warning systems. This problem has not been confirmed by the dealer, nor have any of the parts been inspected by those listed above. There were no warnings or messages before the problem began.

While backing up car will stop abruptly for no apparent reason. This has occurred several time and each time it occurs I think I hit something. It it very annoying and possibly dangerous if car abruptly stops while backing up.