2024 Honda Prologue Brakes Problems

Please see details of NHTSA Campaign #25V433000. This is a known issue associated with a platform technology shared by GM and Honda. I purchased the vehicle as CPO on 31 July and almost immediately the parking brake warning light and the 'Service Transmission Now, Unable to Shift Soon' error code appeared on the dash. I returned the car to the dealer on 1 Aug for repairs and was told this is a 'known issue' with Honda Prologues, but there is no recall in effect for Honda. How is this possible? I am concerned with the degree of risk I could have potentially encountered due to a sudden brake failure or being stranded.

NHTSA ID

11754986

Incident

Jul 31, 2026

While driving my 2024 Honda Prologue Elite at anywhere from 10-30 MPH, the One-Pedal Driving system suddenly and without warning faults out and disabled mid-drive. The regenerative braking abruptly cut out, causing a sudden loss of expected deceleration, creating a 'lurch forward' feeling. A dashboard warning light illuminated instructing me to press the brake pedal immediately. This has happened multiple times, causing a severe safety hazard during normal traffic conditions. The vehicle shares an identical GM Ultium electronic brake modulator architecture with other previously recalled vehicles. The car is unsafe and should be considered for recall repairs. I have read that this is happening to others and Honda really needs to address this issue.

NHTSA ID

11744946

Incident

Jun 8, 2026

Description of Safety Defect: The Automatic Emergency Braking (AEB) / Forward Collision Avoidance system is severely malfunctioning. On multiple occasions, the vehicle has experienced "phantom braking"—abruptly slamming on the brakes for no reason whatsoever. There were no obstacles, pedestrians, or vehicles ahead to trigger the system. This malfunction is happening at high speeds on major highways. Safety Risk and Impact: This issue represents an immediate and terrifying safety hazard. Unexpectedly slowing to a sudden stop at highway speeds completely compromises vehicle control and leaves me at an extreme risk of being rear-ended by high-speed traffic. It is a severe danger to myself, my passengers, and every other driver on the road. While the vehicle is currently subject to a manufacturer recall regarding the backup camera and other software updates, this specific, dangerous braking behavior makes the vehicle incredibly unsafe to operate. I request that the NHTSA review this issue immediately to determine if a broader safety investigation or expanded recall is required for the 2024 Honda Prologue.

NHTSA ID

11742950

Incident

Jun 9, 2026

Shortly after purchase, I observed damaged/torn underhood insulation and reported the condition to the selling dealership, with concern that the vehicle should be inspected for related issues. Prior to a crash incident, I experienced concerns involving braking-related behavior and advanced driver assistance features, including lane assist and object/collision warning functions. During the crash, while reacting to a roadway hazard, the vehicle swerved and struck a pole, and I did not experience warning or intervention from driver assistance features as expected. Following the incident, a diagnostic pre-scan identified multiple faults involving brake control, radar sensors, image processing, and communication systems. Since the incident, similar concerns have continued, including recurring braking/driver assistance concerns, and the issues remain unresolved. I am submitting this complaint due to concern that braking and advanced driver assistance systems may not have functioned as intended and may present an ongoing safety risk.

NHTSA ID

11734343

Incident

Jun 3, 2025

There is a clicking sound coming from what I’m told is the cv joint/axel. It is a loud and more noticeably louder and especially troubling when reversing. Purchased this vehicle less than 3months ago with only 12,000 miles on it.

NHTSA ID

11730716

Incident

Mar 11, 2026

High voltage system error has flagged and been fixed multiple times starting in early January of 2026. Car randomly warns and breaks in the middle of the road because it sensed something that wasn’t there. Luckily no wrecks have occurred. Both CV joints have a loud clicking noise that the Honda dealerships knows about but has no fix for. I currently have an appointment for the dealership to look at my brake and high voltage system again.

NHTSA ID

11728535

Incident

Jan 7, 2026

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

NHTSA ID

11719726

Incident

Feb 19, 2026

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

NHTSA ID

11709932

Incident

Jan 7, 2026

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.

NHTSA ID

11703316

Incident

May 15, 2025

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

NHTSA ID

11702718

Incident

Nov 26, 2025

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

NHTSA ID

11676421

Incident

Jun 29, 2025

See attached document for complaint.

NHTSA ID

11671888

Incident

Jun 20, 2025

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.

NHTSA ID

11670342

Incident

Jun 28, 2025

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.

NHTSA ID

11669492

Incident

Jun 24, 2025

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.

NHTSA ID

11669381

Incident

Jun 22, 2025

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

NHTSA ID

11667125

Incident

Jun 11, 2025

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.

NHTSA ID

11664793

Incident

May 25, 2025

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.

NHTSA ID

11663390

Incident

May 27, 2025

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.

NHTSA ID

11663326

Incident

May 28, 2025

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

NHTSA ID

11662979

Incident

May 23, 2025

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.”

NHTSA ID

11655530

Incident

Apr 13, 2025

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.

NHTSA ID

11652448

Incident

Apr 2, 2025

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.

NHTSA ID

11650591

Incident

Feb 20, 2025

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.

NHTSA ID

11650051

Incident

Mar 1, 2025

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

NHTSA ID

11647310

Incident

Mar 10, 2025