2024 Honda Prologue

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.

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.

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.