Service high voltage error keeps coming on. Have had it serviced by the dealer multiple times. Seems to be a common error with all Honda prologues but Honda has yet to address the problem.

- Washington, DC, USA

Knocking sound in the front when turning Honda states normal axel problem. For Fuel/battery. Been in a back and forth with Honda service/Honda motors because I-??m getting less then advertised on my range performance. Example I drove a 60 mile drive and car drained 109z that-??s 49 miles unaccounted for. I am now being told by Honda Motors mediation that the battery loses 30/40 percent efficiency in cold weather. That-??s horrible. It-??s not advertised and it-??s unacceptable. It-??s unsafe that customers can-??t depend on the vehicle when an emergency happens.

- Nutley , NJ, USA

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.

- Peabody, MA, USA

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. While the problem has not resurfaced since the reset, I am worried it may return unexpectedly, affecting my confidence in taking the vehicle on longer trips.

- Queens Village, NY, USA

Vehicle with purchase on April 15, 2025 pre own with only 5800 miles. Drove the car for less than 2 weeks on April 28,2025 a vehicle warning pop-up -?? high voltage service error-?? I took it back to Honda dealership. A code U3620 came up. The code indicated a high voltage battery replacement needed. Currently ETA for the parts is not available.

- Euless, TX, USA

three codes telling me there is a issue - reduce acceleration drive with care - service vehicle soon - service high voltage system

- Little Falls, NY, USA

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.

- Upper Marlboro, MD, USA

I was driving and a warning popped up on my dashboard screen telling me that the "high voltage electrical system needed to be serviced" and another one followed that said "acceleration reduced drive with caution." At the same time my heat stopped working and only cold air would blow from the vents (it was a cold day so I did not test to see if the A/C was also broken). I discovered a day or so later, when I went to charge my car (it is an EV) that it would not allow me to charge above 26% capacity.

- Mattapan, MA, USA

Car was charging on a typical 48A J1722 home charger. Car stopped charging early and displayed "Service High Voltage System" and "Reduced Acceleration. Drive with Care" Scanner shows codes P1E00 and U362C

- Menomonie, WI, USA

2024 Honda Prologue has been having service high voltage system, reduced acceleration, no heat or AC in while in the rain and with toddlers in the car. Car has had this issue twice before and just got the car back from the service on April 2, Had issue in December, Feb 2025 for 11 days. The vehicle was just returned 3 days ago for the same issue. Service keeps stating they don't know what the problem and vehicle is needs to be towed due to inability to charge or drive on Major roadway due to limited speed.

- Putnam Valley, NY, USA

We received a High Voltage System warning, making the vehicle undrivable. Honda states it is an AC check valve issue. The vehicle only has 477 miles on it.

- Beaverton, OR, USA

After updating my Prologue and driving it for a few miles, I'm now seeing a message that says: "Service High Voltage System / Service vehicle soon." The car will not accept a charge at all and the heat/defroster will not work. It will only blow cold air (which may just be outside air circulating meaning full hvac isn-??t working).

- New Hope, PA, USA

High voltage system errors. Won-??t charge. Car is 2 weeks old!

- Lynbrook, NY, USA

When starting vehicle, lights for Propulsion Power is Limited lights and service vehicle soon lights came on. I tried to shift into reverse, but got a warning message that the conditions for shifting error, I also could not shift to drive. I only have had the car for 2 weeks. I called the honda warranty, they arranged to have it towed to dealership. 2 different service people tried troubleshooting the problem on site with no success. It was towed and dropped off after hours at a Honda service center. The tech called the next day stating that the problem could not be recreated and all diagnostic tests came out good. Waiting and wondering when this car is going to leave me stranded again.

- Vienna, VA, USA

Service High Voltage System warning. Have had this come up on my car and I have seen that this is a design issue with the battery cooling system. I am glad that the car did not just shut off while I was driving. Honda/GM need to make this car right. And this issue is happening to everyone. Please help us.

- Charlotte, NC, USA

When accelerating into a turn from a complete stop, left turn or right turn, there is a knocking sound coming from the cv joint. Vehicle made this sound when driving off the lot brand new. Vehicle also experienced a battery fault error/reduced propulsion warning at 700 miles and is currently at the dealer to investigate. The error alternates with the battery fault light indicating a fault with the high voltage battery and the propulsion power is limited light. This error occurred after preconditioning at 30% battery charge in 32 degree weather. The vehicle warmed up the interior but displayed the message as soon as I put the car into reverse gear. Both of these issues are safety issues in potential loss of steering and loss of propulsion power on the road.

- Hackettstown, NJ, USA

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.

- Darien, CT, USA

Twice, a "service high voltage" error light has come on and it has said it impacts the ADAS and safety systems and the acceleration of the vehicle. The light disappeared after a short drive, but the heating system stopped working. The first time, we took it to the dealership and they reset the system and the heat came back a little, but seems to struggle under 32 degrees, and especially sub 15/20 degrees. The second time was this morning - the heat is barely working at all. Very frustrating for a vehicle under 2000 miles.

- Trumansburg, NY, USA

Propulsion System Failure light came on and vehicle lost all cabin heat. This occurred in winter (January) and since there is no heat all vehicle windows fog over, obscuring the view of the road and other drivers. All vehicle occupants are also at risk of exposure due to complete lack of heating in sub-freezing January temperatures.

- Erie, PA, USA

I was driving in the highway, at ~70mph with cruise control on when the error popped up. The temp was been 47-52?F. I got a message saying Service High Voltage System. I thought nothing of it and proceeded with rest of my trip. I went to even colder conditions and got down to 28?F at one point. I noticed that in the car, the AC was not working, it was only blowing cold air from outside. Eventually went to charge and and the car refused. I was 70 miles from home but was able to get a tow.

- Long Beach, CA, USA