2024 HONDA PROLOGUE Forward Collision Avoidance Automatic Emergency Braking Problems

On 2/19/2026 I was taking an freeway exit ramp from I 15 south to Carrol Carrol canyon and I stepped on the brake but the car did not slow (my perception was it was speeding up), the vehicle collision warning did not sound and the vehicle did not emergency brake, therefore I hit a stopped vehicle at a stoplight. The air bags did not deploy. Attached pictures: Left side is the vehicle was rear ended. Right side is the Honda Prologue

Clicking noises when turning. Dealership no longer fixing (fixed passenger side, driver side still unrepaired). Front end collision breaking happening at random, causing unsafe breaking in the middle of the road. Also frequently happening when releasing break at stop light, narrowly avoiding multiple rear end collisions due to breaks being slammed on by vehicle collision system. Now with high voltage battery failure message, blowing cold air out of hvac system and performing at reduced acceleration.

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.

CV joints left and right make very loud clicking noise, the service department at the dealer ordered the parts in December of 2025, i have been at the dealer twice and today February 6, they told me that the parts are not expected until the end of March, I do not feel safe driving the car. Also the auto emergency brake does not work properly when backing up, false positive hard brakes happen all the time.

Backup Camera Failure (Occurred at approx. 1,000 miles) Part was on backorder, the rearview camera remained inoperative for approximately 99 days (February 22 through May 31, 2025). This rendered the vehicle non-compliant with federal rearview camera safety requirements. Emergency Braking System Issues (Ongoing) Compounding this, the vehicle’s emergency braking system would activate erratically and without cause, including: •When entering or exiting my driveway •During normal lane changes •When driving near trucks or concrete barriers Because these events occurred repeatedly and unexpectedly, I was forced to disable this safety system to avoid sudden braking events, further compromising vehicle safety. Broken CV Axles (Officially diagnosed at approx. 6,000-7,000 miles) •On May 31, 2025, the vehicle was returned to the dealership for backup camera installation and to revisit the knocking noise, this time properly documented. •That same day, both the left and right CV axles were diagnosed as broken, and I was told...

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.

Three major problems stand out: faulty CV joints/axles that produce loud clicking or knocking noises when turning, false activations of the automatic emergency braking (AEB) system, which I had to turn off, and high-voltage system failures that can disable charging or limit performance. Other concerning issues include steering malfunctions, infotainment system blackouts, USB-C not connecting, battery not charging to 300mi range, forward collision sensor false activation, and braking anomalies.

The automatic emergency barking system suddenly applies even when there are no obstructions. Happens regularly. I was almost rear-ended at a stop light by another vehicle because of the sudden application of the emergency braking system, even though there was nothing in front of me. Axel makes a loud cranking sound when making a right or let turn. Battery 'Service vehicle now' warning consistently comes on with warning to reduce acceleration even when the vehicle is not in motion.

CV joints clicking when turning Service eCall keeps coming on Warning light on next to battery range with an exclamation point over the car. The manual indicates its a system malfunction that can be related to vehicle stability assist (VSA) electric power steering (EPS). My safety has not been put at risk. I am scheduled to have the car inspected and repaired on 1/19/26.

Cv joints since 800 miles had new one put in at 9089 miles. Clicking starting happening again about 1,000 miles after repair was done. My car is currently at 12,000 miles and its worse than its ever been. I called the dealer and waiting for a call back. The next is AEB system. My car will suddenly go through all the motions of emergency braking at a stand still. I also get the beeping on the highway and there is nothing in front of me or around me

On at least 3 occasions my car has braked automatically for no reason. Nobody was in front of me or behind me.

CV joint clicking when turning about 1 month after purchasing the vehicle last year (vehicle purchased 1/4/25). Dealer is aware but said that there is no fix. Still clicking turning both left and right. False emergency breaking system--alerts when there is nothing in front of the car. Has suddenly stopped while driving twice, which is dangerous.

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 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.

This vehicle has automatic emergency brakes repeatedly for no reason on empty roads with nothing around the car. It emergency breaks going forward on the highway. It emergency breaks going backwards out of my driveway. It emergency breaks pulling out of drive thrus. I have nearly been hit multiple times because of this. I have been covered in scalding hot coffee because of this as the car violently brakes suddenly and for no apparent reason.This has been reported, reproduced, and confirmed by the dealer. Then they just shrugged and said Honda has not issued a fix for the issue. This is a safety issue because it has nearly caused multiple collisions on the highway and on city streets.

I have had multiple issues with this vehicle and it has been in the shop more than 80 days between April and Oct 2025. First, the entire battery system went out in the all electric vehicle. Honda said that since it was a collaboration car with GM, that it would take a long time to fix because their technicians weren’t very familiar. It took almost 8 weeks in the shop before we got it back. Not long after, the entire dash (electronics) went out and the shop had it again for over a week. they never found or could replicate the issue. The vehicle went back in after having multiple incidents of emergency braking when there was no emergency, or even vehicles in my vicinity. The final time this happened, I was traveling nearly 25 miles per hour and the car decided to slam on the brakes, making me feel...

Car shows a turtle image on dash and will not go faster than 30mph nor will it fully charge without dealer intervention. This happens when it's cold. There's also a clicking sound when turning as well that's a whole other issue.

Several issues!! When I turn I hear clicking noises. Last night The "Service High Voltage System" warning lights came on. The Interior pieces are falling off my door and the vent on driver side dash. The automatic emergency break is very strong and jerks very heavily when back up. It’s not turned off!

the automatic emergency braking system in both forward and reverse is to sensitive and violently slams the brakes when there is no risk of a collision. the most recent incident involved making a left hand turn where there was a little overpass wall on the passenger side of the street i was turning onto. with cars behind me the vehicle slammed the brakes as i was going approx 10-15MPH , startling myself and all 3 passengers and almost causing me to be rear ended. the vehicle also slams the brakes in reverse when there are no objects in the way predominately if it is raining out. it's a harsh violent stop and can cause an accident or injury. due to this incident the vehicle is back at the dealership for a total of 3 appointments and 32 days in repair for this issue and they still have not remedied the...

My 2024 Honda Prologue has numerous issues. First, the CV joints are making the clattering noises when turning right from a stop. Started at almost 8000 miles, more faintly, but now very noticeable. I noticed the left has now started making the same noises as well at 9000 miles on the odometer. Soon after purchase, the automatic braking/collision avoidance slammed on my brakes HARD while driving at highway speeds. Nothing was present in front of me, early morning and no cars around or I probably would have been rear ended for sure. I disabled the auto braking but the “BRAKE” alert comes on almost daily, with nothing there. Backing up did the same so I disabled it as well. Lastly, every time I use my turn signal to turn right and I bring the wheel back to center, it cancels out as it should but it then turns the left...

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...

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.

I cannot reverse with my car slamming on the brakes and it thinks I'm going to hit something when no one is behind

At almost 20,000 miles my car shut itself off while I was still driving. I was slowing down to a stop but my car was not functioning properly, could not turn my car off, put in park or turn of parking break. I had to sit in the middle of the street for at least a minute until I was able to shut off my car and restart it again. I drove straight to the Honda dealership. Waiting on diagnostic results. Also, I have always had a problem reversing out of a parking space when it rains. The emergency sensor reads an object behind me and automatically breaks even though I am the only car in the parking lot. It takes me minutes to back out enough to turn my car.

Well i bought this Brand New car from HONDA PLANET in NJ UNION 2024 August have been have this issues with axles making clicking noises also when Stopping Suddenly in Reverse this is not normal have been taken to the dealership since i bought this car and its getting crazy for me for my comfort because i bought this car for my comfort use not to be feeling uncomfortable and not safe driving this car

While driving my 2024 Honda Prologue, the automatic emergency braking system (part of Honda's Collision Mitigation Braking System) has activated unexpectedly and forcefully multiple times — with no obstacle or vehicle ahead. The most serious incident occurred on 6/28/2024, while traveling at approximately 70 mph. The vehicle suddenly slammed on the brakes without warning or any visible threat in the road. We did not crash, but the vehicle behind us narrowly avoided rear-ending us. This also happens about 50% of the time we reverse the vehicle. Given the potential severity of this defect — especially involving passenger injuries and potential crashes — I am deeply concerned. Many other Honda owners have reported similar phantom braking behavior across multiple models, and I believe this defect needs to be investigated urgently by NHTSA. Honda has not issued a recall or provided public guidance on how to disable or address the system, leaving...

While driving my 2024 Honda Prologue, the automatic emergency braking system (part of Honda's Collision Mitigation Braking System) has activated unexpectedly and forcefully multiple times — with no obstacle or vehicle ahead. The most serious incident occurred on [insert date], while traveling at approximately [insert speed] mph. The vehicle suddenly slammed on the brakes without warning or any visible threat in the road. The sudden stop caused whiplash injuries to my wife and two children, who were passengers in the vehicle. We did not crash, but the vehicle behind us narrowly avoided rear-ending us. I have attempted to get the vehicle serviced, but the nearest dealership told me there is a wait time of over a month, so no diagnostic has yet been performed. Given the potential severity of this defect — especially involving passenger injuries and potential crashes — I am deeply concerned. Many other Honda owners have reported...

When backing up randomly puts emergency brake on. In return you get whiplash. The car will then not move forward or back have to shut it off. It takes about 3 times for it to work again. The wipes with rain sensing on come on when hardly any rain but pouring and never turn on. The ev does not hold a charge for highway. Trip was 154 I had 280 on charge dies at 145.

Driving in the express lanes south of Atlanta in the rain, the vehicle's Automatic Emergency Braking system activated for no reason. There were no other vehicles around, and we were on a straightaway. It was such an abrupt deceleration that if another vehicle had been tailgating me, they probably would have run into me.

When I put the car in reverse the automatic emergency braking system engages multiple times. Though there are on abstracts on the path. I have to constantly keep pressing the parking brake multiple times in order to get out of my driveway in the morning and afternoon. This is a constant occurrence weather there it is raining or not raining.

When I was taking my Prologue in reverse and will slam on the brakes even when there is nothing behind me. It happens frequently nothing behind me. As others have reported here and elsewhere online, my Prologue emergency braking/collision detection system repeatedly activates when there is no danger of a collision. Backing out of my driveway I can expect that 40% of the time the car will slam on the brakes for no reason and apply the parking brake, which I then have to disengage manually to continue backing out.

During a storm when backing up out of parking spot the prologue did an emergency breaking procedure , engaging the parking break. (There was no one behind me or anything in the way) and left me stuck in the middle of the street until I could figure out what happened. I had to manually release the parking brake and as I did that, I then almost ran into someone that was trying to go around me while I was a full stop. Since this happened randomly, I was not fully sure what was going on . This creates a huge safety hazard when there is no reason for it. There are many reports of this in forums that say just turn it to warning only mode, which then removes a safety feature that 1, was paid for and 2 could actually prevent a accident

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

Automatic braking is very sensitive, especially in the rain, and even more so when backing up in the rain. The unexpected braking happened to me at a rotary for no apparent reason, and numerous times in reverse. Service Vehicle Soon Light/(Propulsion System Failure) came on randomly at around 4000 miles. Within a day or so it turned off. Nothing with the car seemed to be effected. Then around 4500 symbol turned on again and has been on for a day or so. No notable issues.

Around 500 miles into my lease the CV Balljoint is making a creaking noise. Now the noise extends to both front cv joints and the clicking or knocking sound is all the time, every turn now. Spoke to dealer and they said this is a known issue and they are working on it but nothing so far. In addition, the emergency braking system is too sensitive. On a small bump the car emergency braking kicked in and slammed on the brakes for no apparent reason. This happened over 14 times in the first 3 months. Eventually, I had to turn off my collision braking. Several times I thought the car tires exploded. Dangerous as I do not have control of brakes, steering, etc... everytime this happens.

I was driving through a parking lot when I received the following warning messages “Brake System Failure,” “Service Stabilitrac,” “auto hold unavailable,” “ Brake assist failure. Press hard to brake. Speed limited.” I then tried to pull over in the parking lot and vehicle was extremely difficult to stop. I had to use both legs on the brake. While sitting waiting on a tow truck, I received another warning message that stated “Service High Voltage System.”

Tried charging my car and says high voltage service , then service vehicle soon light als the tire monitoring system is not working and reverse autobreak is too sensitive

Where to begin? not even 2 weeks after having this vehicle it nearly caused a major accident and gave me whiplash & neck problems (have doctors documentation as proof) when the automatic breaking system hard breaked my vehicle twice in the same trip (20 minutes from work to home) with the second time resulting in my car skidding quite a few feet on a highway in the middle of rush hour traffic (want to note the distance in front of the car was quite significant both times) also both CV joint axles need replacing on top of rear passenger door is not the right size & often pops open. Honda dealership has my vehicle for 31 days back in December January stating parts for door would be in within the month and the cv axle would be beginning of march. here it is March 26th and I've heard nothing from...

The battery failed at 2k miles and needed to be replaced. Both axles need to be replaced due to failed CV joint. There is clicking with turns. When backing up, emergency braking engages and leads us to stop in the middle of busy roads. This is a safety issue.

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...

On 2/16/2025, I was slowly (maybe 5mph or slower) backing out of an Electric vehicle charging stall. Rain was falling lightly. The AEB system activated more than five times in a span of 60 seconds. The vehicle thought there was an obstruction in my path, even though there was no vehicle behind me or in front of me. There was a vehicle that was parked in the other stall charging.

All ADAS systems have to be turned off. Even if switched to alert only the vehicle will randomly break very hard while driving. Also will randomly not allow you to back out of your garage. Or when raining will not allow you back up.

Braking for no reason slam on the breaks so hard we all got so scare. Also the rear brakes engaging with no obstacles on the way.it felts like I hit something. took to the the dealer of purchase and very much make me field like I was insane. and what the technician did was turning off the automatic breaking system. that was the solution. now at when I turn right of left it makes a ticking noise on the suspension. started at 4k miles. plus a win noise is so heavy that I need to the radio volume. I got this car because of the automatic breaking technology offer, but I can't utilize it do to the failure of the system.

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

Car braked extremely hard causing whiplash twice even though there was ample room. This has happened multiple times. Reported that it is normal by dealership

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.

The car makes a clicking noise when I make sharp turns, most co.monly to the left. It is brand new with only 2320 miles on it. The noise started within the last few weeks. The rear breaking system locked up the brakes and turns the emergency break on, when backing up, even if nothing is behind me. Once it was rain drops dripping off of the rear window. Another time, nothing was there. I had to assume that it picked up a shadow in the driveway.

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.