2024 HONDA PROLOGUE Service Brakes Problems

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

At approximately 6,000 miles the vehicle started making clicking noises when making a left turn, which then progressed to clicking when making left and right handed turns. I took the vehicle to the dealership and they stated it is a manufacturer defect and there is no recall at this time. When backing the vehicle up it slams the brakes on when there is no reason for it to. The vehicle has also slammed the brakes on when driving down the road and there has been no obstructions or obstacles.

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 issue

Multiple warnings: AWD temporarily unavailable, service stabilitrak, reduced acceleration drive with care. Not braking completely when speeding

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 drivers at risk.

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 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 drivers at risk.

I got in my car and received the following error messages immediately upon turning on the car: - Brake System Failure 43 MPH Max Speed - Brake Assist Failure. Press hard to brake. Speed limited. - Service Stabilitrak - Auto Hold Unavailable Driving the car was very unsafe as the brakes were extremely difficult to engage, taking my full body force to fully depress the pedal and have the brakes slowly engage. I have taken the car to my Honda Dealership, which (at this time) has been unable to replicate the issue or find a problem. This is a safety issue to have unresolved, as the brakes suddenly becoming extremely difficult to work makes the car unsafe to drive.

When I, Turn, The Wells Makes, a loud noise the other day appear in the dash brake pedal unavailable and also the air conditioning turns on and off by self

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

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.”

When I turn left or right from a complete stop it makes a clicking noise. I believe it is the CV joints. When backing the car randomly puts on the break with nothing around the rear of the vehicle.

Break failure on highway causing MVA- multiple attempts were made to slow down and break vehicle to no response what so ever. Pressed breaks all the way down, nothing, no air, no resistance, no sounds, vehicle kept on going. In an attempt to save myself from an accident that could have been much worse, I jumped out of the moving vehicle, landing the back of my head on the cement highway floor toward left end of bumper. This vehicle is not safe and should be taken off the roads. I have 2 toddlers and am traumatized. The vehicle stopped after some impact in the middle of the highway. From the moment of receiving this car there has been some sort of issue with it's breaks. Initially short stopping on it's own when gas peddle not pressed- had the setting fixed for that to then experience multiple whiplashes for no reason while driving. Attempted to connect the starlink on multiple occasions as well to no success and just a bunch of wasted time trying. In addition to all the alarming safety concerns, this car would not heat up well- 40 minutes into my ride I'd start to feel some warmth. I would love to have this case investigated further and sue honda for allowing such a dangerous vehicle on the roads. My accident was bad but the honest truth is that it could have been worse and no one should have be subject to this danger.

Every time this car comes to a stop, it rocks back and forth significantly on its suspension. Even at low speeds, it is noticeable when breaking, with about a second and a half of five to six rebounds back and forth. It is highly prominent with stronger braking or stop-and-go traffic, resulting in about two seconds of hard rocking back and forth. This problem happens more when the car is being driven in normal mode, meaning using both the acceleration and brake pedals; it’s less pronounced when driving in “one-pedal” mode. I took the car to the dealer service department, and they tested my car and other Prologues. The service department manager said this seems to be a problem in all the Prologues, even a 2025 model they tested. This problem is causing motion sickness for me and my wife, which can lead to distractions and potentially unsafe behaviors as explained below: * Distraction: Passengers experiencing motion sickness may be too focused on their discomfort to pay attention to the road or the driver, which can be dangerous. * Nausea and Vomiting: Nausea and vomiting can cause a passenger to become ill, which can be a distraction and potentially lead to unsafe behaviors like reaching for a trash bag or losing control of their body. * Safety of the Driver: If a passenger struggles with motion sickness, the driver may be distracted by the passenger's discomfort, which can lead to unsafe driving behaviors. * Increased Risk of Accidents:If a passenger becomes ill and the driver is distracted, the risk of accidents increases. Even though the dealership acknowledged that this seems to be a widespread problem based on the tests that their service department did, they are unwilling to take action until an official recall is in place. Please help.

Brake system failure message and car was exremely hard to stop. I had to stand on the brake pedal to get the car to stop

All lights related to brakes lighted up on a dashboard ( and message to take it to Dealer). Took it to Dealer. Car is in the shop for over 5 weeks and they can't figure it out what's wrong. They've replaced brake booster (twice!!!!!) and that didn't fix it... Now replacing front calipers. On top of that cv axle is clicking terrible and they can't replace it because it's on long Backorder ( I'm waiting over 2 months for it already.

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.

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.

On [XXX], I leased a Honda Prologue from Honda Carland in Roswell, GA. Within a week, the vehicle displayed multiple braking system failure warnings, including “Braking system failure,” “Service Stabilitrak,” and “Brake assist failure.” One-pedal driving also became unavailable. Upon attempting to drive, the brakes were completely unresponsive, causing the car to roll down a ramp uncontrollably before eventually stopping. Despite multiple attempts, the brakes failed entirely, making the vehicle out of my control. I immediately called Honda’s OnSite service, and the car was towed back to the dealership. The dealership initially diagnosed the issue as a loose connector that was allegedly not properly attached during assembly. They assured me the vehicle was now functioning as designed. However, about a week later, the same critical brake failure occurred again. The car would not brake, forcing me to request another tow back to Honda Carland. This time, the dealership claimed the issue was due to a faulty brake master unit, which they replaced—a far more serious defect than initially diagnosed. Given the life-threatening nature of repeated total brake failure, I refused to drive the vehicle and attempted to return it. In researching this issue, I have found similar complaints in online searches, including the NHTSA database, suggesting that this may be a much broader issue affecting Honda Prologue vehicles manufactured in 2024. This is not a minor issue—it is a safety hazard that puts my life and the lives of others at risk. I am not willing to drive this defective vehicle, and I urge the NHTSA to investigate this matter immediately to ensure that no other driver is put in danger due to brake system defects in the Honda Prologue. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Pulled out of our driveway and received a message that "AWD Temporarily Unavailable". This message did not indicate that this fault disables one-pedal driving. Upon reaching the end of my street at the stop sign, I gently let my foot off the accelerator expecting the car to slow down as it should when using one-pedal driving. Instead the car continued to move forward and I almost went through a stop sign into a busy road where I would have for sure gotten into a bad accident. Not informing the driver that this fault also disables one-pedal driving is extremely hazardous.

I have encountered recurring problems with the vehicle's automatic braking system, as well as issues with the Honda Prologue app, both of which I believe compromise the vehicle's safety and performance.
The vehicle's automatic braking system appears to be malfunctioning, as it has activated unexpectedly on multiple occasions, leading to near-miss accidents. At least three occasions, the vehicle’s brakes have engaged without cause, even in situations where there is no obstruction or “phantom” vehicle detected. This automatic braking has not only been inappropriate but also posed a significant safety risk to both myself and other road users. Additionally, the reverse braking system exhibits similar issues, activating without cause. Despite the alerts being on and the brakes not being engaged, the system’s warning signals still activate, leading to further confusion and potential danger. I have consulted with both the dealership and the Honda Prologue forum, and it has been confirmed that this is an ongoing issue. The dealership has indicated that they have no immediate workaround or solution. The only remedy has been to disable these safety features entirely, which negates the very purpose of having them. 
The Honda Prologue app, which is intended to provide critical vehicle information and allow remote monitoring and control, is also malfunctioning. I have been in communication with Honda for over two months regarding these issues, but unfortunately, no viable solution has been provided. The app is essential for monitoring vehicle functions such as theft prevention, charging status, and temperature control, all of which are key safety and convenience features. In particular, I am concerned about my ability to monitor the vehicle’s charging especially given the increasing number of incidents involving electric vehicles catching fire during or after charging. Proper monitoring of charging status is crucial to avoid potential overcharging and battery degradation.

Unknown braking while no objects in front or behind the car. Warns lane departure too late after you crossed halfway through the lane.

On several occasions while in reverse the car braked hard and violently for no reason. This caused a sudden jolt to me and the passengers endangering our safety. Also, this condition can cause an accident if I’m trying to back up to avoid a collision and the emergency braking system does not allow me to do such. The vehicle has not been inspected by anyone else and no warning lamps messages or other symptoms of the problem appeared prior to the incidents. This condition first occurred with about 300 miles on the vehicle.

When the vehicle is in reverse, the safety feature that is supposed to prevent you from hitting something mistakenly goes off when there is nothing there. It seizes the car and immediately causes the brakes to go off. The car will feel like it got in a crash. There is no way to un-release it and there is no way to change the settings to prevent it. It is a great safety feature that could really protect me from getting into a crash. But instead at least once or twice a week it simply prevents me from backing out of my driveway in the morning to go to work. Delaying me by 1-2 minutes every day. Very annoying.

Suspension Related Issue: CV Axel Joints causing clicking, which is the most common issue among users of this car. Apparently the Driveshaft needs to get replaced as well. I got the right side done as the car was pulling to the right before the replacement, but the other part is on back order with no ETA. Been driving this way since October 2024. So I will believe for now that it's safe to drive the car as per dealer's recommendation to do so. Braking: The One Pedal feature turns off at random when starting the Car. Almost got into an accident not knowing it was off. Dealer cannot replicate the issue, but it happens to me randomly. It's to the point I have to check that first before operating the vehicle. Could be the memory of the vehicle not retaining the settings. Blind Spot Warning: The sound notification has recently turned off and is no longer working. Needs to be inspected by Dealer. Off-topic: Some Dealers only have 1 certified technician to work on the car. You're at the mercy of their availability when something needs to get fixed.

Car will randomly stop while in reverse. This would happen even without obstructions or other vehicles in view. This happens at least every few days. I made sure to keep the camera free from debris and dry. The parking break will also enable as soon as it brakes.

Whenever it gets cold, the car will being to experience brake systems failure, it was suddenly only go 62MPH. On this particular occasion, the car died in the middle of the street, thus blocking the street and causing a police response. Contacted Honda Support and they advised it would be up to 2 hours to get it towed out of there. Police called their own tow truck, the tow trucks had issues with it not going into Transport Mode and stuck parking break. It was brought to the dealer for repair. I believe the car is not safe because there has been several failures of this nature during the cold and other general system failures that appear to be computer related. More than likely police information item is on file.

On a cold day the vehicle's baking system failed. It was would not move more than 62MPH and would not function. When dealer was contacted no assistance was given until Honda Corporation got involved. The problem cleared up on its own and I was advised that it should be fine at this point.

The car had an error with a front safety camera, the car stopped in the middle of an intersection and I had to coast into the nearest parking lot. The error cleared it self but Honda was of no help. The dealers do not know how to fix the cars.

When I was backing out of a parking spot the rear collision detection went off without any obstructions behind me. Although I was safe this could of caused bigger issues.

My brakes were mushy when braking. Warning notices on the dash for servicing brakes and other related brake systems came up. At one point I couldn't come to a full stop. Issue first noticed 9/26/24. Dropped the car off at the dealer 10/8/24 and it sat for four months waiting the brake master cylinder. Picked up on 1/9/25. So far the brakes are working fine. I am now noticing a clicking sound coming from the front end when steering.

Took delivery of vehicle 11/19/24. Had the vehicle 10 days. Let another vehicle out of the driveway & upon pulling back in got "brake system failure" alert and the car would not stop rolling not matter how hard I hit the brake. I had to push the brake button. The "one pedal driving unavailable" alert also came on. Towed to dealership same day(11/29/24). They tell me it's a software update, but their system won't connect to the car because they need a software update. Finally get the vehicle back on 12/11/24. FOUR DAYS LATER & the same problem again. Brake system failure, one pedal driving & service stabilitrak alerts come on while going to leave my house. Towed again the next morning(12/16/24). Brake booster ordered 12/17 with no ETA. 2 days go by with no communication from them. I ask what's up. Still no ETA. I mention lawyer on Monday the 22nd & wow my part is there on Tuesday! Tells me car will be fixed by 12/27. That day comes only for them to tell me their system isn't working again to program the car. I file a case with Honda. I hear nothing from the dealership again until 1/8/25. I filed lemon law on 1/7. I hear nothing from service again until 1/13 just more excuses & about engineers coming to look at the car and ordering a new module. Get another message from them today that the car can be picked up(1/17/25). I cannot wait to get rid of this vehicle. I do not feel safe driving it anymore especially with 2 children. Luckily I was not on a highway or far from home when these brake failures occurred.

While backing up the car will slam on the brakes for no reason. It has done this twice with nothing behind me. Scary when you think you have got something.

When turning the vehicle on, it sometimes displays an error in the instrument panel of the”Brake system failure 43 MPH Top Speed” When this error is present, the vehicle has almost no braking capability. One pedal braking is also disabled when this happens. So the only way to stop the car is to mash the brake pedal to the floor like your life depends on it. Turning the vehicle off for 5 minutes and turning it back on seems to clear the issue.

Brake system failure happened the day after I bought the vehicle and the dealer found no issues or errors than another brake failure occurred in one week. This could have caused a major accident to a point where my safety is in fear

Brakes activated in an unwarranted situation. Suddenly stopping in the middle of traffic.

The collision system is too sensitive. Regularly when I’m backing into a parking spot the car will slam on the breaks even though there aren’t any objects in the way. This will also happen on occasion while driving forward normally potentially causing someone behind me to rear end the car

Sensors cause unnecessary braking when going in reverse. Happen in rainy conditions.

The contact owned a 2024 Honda Prologue. The contact stated that while driving at an undisclosed speed, the steering wheel seized. In addition, the brake pedal was depressed, however, the vehicle failed to stop as intended. The vehicle speed increased independently. As a result, the vehicle crashed into another vehicle. The fire department and the police arrived on the scene. A police report was filed. There were no injuries reported at the scene of the crash, however, the driver of the other vehicle was later treated for unknown injuries. The vehicle was towed to a local tow yard. The contact stated that both vehicles were condemned totaled lost. The manufacturer was made aware of the failure and a case was filed. The failure mileage was 1,000. The VIN was unavailable.

Mileage: 1,000

The contact owned a 2024 Honda Prologue. The contact stated that while stopped at an intersection and attempting to make a right turn, the steering wheel was frozen and the vehicle began to independently accelerate at an unknown speed. The contact stated that he was depressing the brake pedal but the vehicle was not stopping. The contact stated that he crashed into a vehicle in front of his vehicle on the other vehicle's passenger side front door. The air bag deployed. The contact stated he was not aware of any warning lights. The contact stated that the police and emergency service vehicles arrived. The contact was not injured and did not receive any medical attention. The police filed an incident report. The vehicle was towed from the scene to an impound lot and later was declared a total loss by the contact's insurance provider. The manufacturer was informed of the failure. The failure mileage was approximately 2,000.

Mileage: 2,000

After driving this new car for about 18 miles and stopping for an errand, upon restarting an error message posted “brake system failure” do not drive faster than 43 mph and use the brake pedal to stop. Upon driving the brake pedal went nearly to the floor and had to be pumped to gain brake cylinder pressure sufficient to slow the car using extreme pedal pressure. After shutting off the vehicle, the braking system work normally upon restart. When delivered to the dealership the issue reoccurred. The Prologue has been at the dealership for repair for four days but cause and effect yet to be determined.