2024 Honda Prologue Fuel System Problems

Mileage when the problem started

Owner reports

Selected complaints filed with NHTSA by 2024 Honda Prologue owners, lightly cleaned up (personal details are redacted by NHTSA).

I was driving a 2024 Honda Prologue Elite and was coming to an ordinary stop at a safe distance behind another car at a red light. With my foot continuously and firmly pressed on the brake pedal, a brake alert/warning appeared on the dashboard screen accompanied by beeping, and the emergency brakes automatically engaged, stopping the car abruptly. Then, almost immediately, the vehicle suddenly lurched forward without warning, striking the vehicle ahead of me. I kept my foot firmly on the brake as the warning, beeping, and auto-brake activated again, and the vehicle lurched forward a second time, again striking the vehicle in front of me. This sequence repeated a third time with the same warning/beeping/braking and lurching pattern, causing a third forward impact. …

The contact owns a 2024 Honda Prologue. The contact stated that while attempting to start the vehicle, the vehicle briefly failed to start as expected, but internal electronics showed signs of power. After which, the message "Battery Low" and "Service High Voltage System" were displayed, even though the battery indicator showed that the battery was charged to 90%. The vehicle returned to normal functionality, but the failure became a regular occurrence. The Hybrid Battery warning light was illuminated. The vehicle was towed to the dealer, who informed the contact that the vehicle was functioning as intended during the time it was in the service center for diagnosis, and no faults were found. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 10,900.

Within two weeks of purchase from dealer, the car began having warning lights "service high voltage system","acceleration reduced", "service vehicle soon". Additionally this electric car would not allow me to charge the battery once these warning lights were displayed. Car has been towed to dealer for repair. Several attempts have been made to get update on repair time and my inquiries have not been responded to. I'm now stuck paying for a car that is less than two weeks old with less than 1,000 miles on it. All I have been told is that a call was made to the OEM based on the error codes that were read by the dealers system on intake. They aren't telling me anything in terms of what the issue is, what the OEM fix is or a time of repair. …

Yesterday 11/30/25 we were going on the freeway about 60 mph, when suddenly I got the warning that my battery and acceleration were impacted due to a battery issue. States to service battery soon. It stayed that way as we were headed to have some blood work. That warning continued until the evening when it disappeared so thought it was a glitch. I still setup an appointment to have it checked at the dealership on Thursday 12/4/25 at 8:15am. On 12/1/25 at around 7:35am I was about to break at a light when I feel this jolt from my car and the same warning lights stayed on. I was really concerned so when I got off and went to work I immediately called the service department to move my appointment up to Tuesday 12/2/25 at 7am first thing. I dropped off the car at night for them to work on it. This seemed to impact also the Heater as it was cold air coming from my vents. …

My vehicle constantly receives an error message while driving stating, "SERVICE HIGH VOLTAGE SYSTEM" and "REDUCED ACCELERATION DRIVE WITH CARE." Error symbols appear on the dashboard that show an orange turtle, a red battery with a big exclamation point through it and and a red car outline with a big exclamation point going through the middle of it. When this happens, the vehicle acceleration is significantly reduced and the regenerative braking or "one-pedal" feature automatically becomes disabled. If you're relying on that system to brake, it will not do so when you need it to and you have to manually press the brake to slow and stop the vehicle. This error clears after a few days of driving but never fails to return. …

On April 19, 2025, the "Engine/Battery Fault" warning light illuminated on my vehicle. At the time, the car had only 1,398 miles on the odometer and had been purchased just one month prior. Shortly after the warning appeared, I received a diagnostic report from OnStar indicating fault code U362A. The vehicle exhibited significantly reduced acceleration and limited charging capability. Concerned about the issue, I brought the car to the dealership where I purchased it for inspection and service. The dealership performed a reset of the main computer system, which cleared the warning light. However, I remain concerned about the reliability of the vehicle. If this issue were to occur again-especially while driving in a remote area-I could be left stranded without the ability to drive or charge the car. …

High voltage warning light, service vehicle soon light, reduced speed limit, would not charge past 25%, forward looking camera issues warning light would show up randomly Called the local Honda dealer(01/26/26), talked with service manager, He told me to bring the vehicle in immediately. The Honda dealer refused to fix it under warranty since it was in an accident.(Right fender and driver door needed repaired.) The dealer wanted $300 dollars to perform a diagnostic test on vehicle. Dealer found that the HVAC system had failed which also includes the 12 volt charging system to also fail. Dealer wanted an additional $800 for further diagnostic testing. Informed me that the full warranty was void do to it being in a previous accident and I will be responsible for all repairs for this vehicle. Contacted Honda headquarters and filed a complaint thru them. …

I purchased a Honda Prologue from my local dealer with just 8 miles on it. At 97 miles, multiple warning lights appeared, including "Service High Voltage System" and "Service Vehicle Soon." Additionally, the vehicle would not allow me to charge the battery once these warnings were displayed and acceleration was reduced. I took it to the dealer, where they diagnosed an overcharged AC system causing battery cooling issues. They removed 1.270 kg from the system, cleared the codes, and tested to ensure proper levels before returning the vehicle to me. After driving for another week, the same warning lights reappeared, and now, with only 360 miles on it, the vehicle is back at the dealer for further diagnosis for the same warning lights. It does not appear an overcharged AC system was the cause. For a brand-new car with less than 500 miles, this is completely unacceptable from Honda.

Broken/Clicking CV joints. This could lead to all loss of power transfer to the wheels, causing a sudden and unexpected stop to the vehicle while driving. Honda is aware of this defect, but has no permanent fix. This is confirmed by multiple Honda Service Centers. High Voltage Warning. Loss of heat, car will not charge, car shuts down/becomes undrivable, or enters "limp mode." This is an extreme safety issue. The car loses the ability to properly cool the main battery. This could result in thermal runaway (a rapid, uncontrollable, and self-sustaining increase in battery cell temperature), resulting in a fire that is difficult to extinguish, burns extremely hot, may reignite hours or days after the initial incident, and/or result in explosion. This is confirmed by multiple Honda Dealerships. The warning has occurred multiple times, even after multiple repair attempts.

I leased this vehicle approximately three weeks ago, yesterday as I was adjusting the dashboard lighting, the service high voltage battery warning came on. Now the vehicle wont take a charge, the vehicle has changed the charge setting to 40%, and I cannot increase it. I 've reserved an appointment for 4/11/2025 for the vehicle to be serviced, and was told that I wont be given a loaner vehicle. This entire scenario is very inconvenient to say the least. This my first Honda and probably my last. I feel that my safety is at risk in this case, as I cant drive it now, since I cant recharge the battery, so the vehicle is totally unreliable at this time. There were no warning signs of this issue, and I'm grateful that the vehicle didnt die in the middle of rush hour traffic, or leave me stranded somewhere.

Fuel System complaints in other Prologue years