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

Simply put the charging system will not stop at preset percentage and will charge to 100 percent most of the time. I would say it fails to stop and continues to 100 percent about 70 percent to the time. From what I understand charging to 100% on a daily basis can damage the battery and potentially cause a safety issue under certain circumstances, such as storage and temperature. I now have to sit in the vehicle or set a timer to check the vehicle to make sure that it stops at the designated charge limit. I have taken it in for service at Jack of diamonds Honda in Tyler, Texas, but they were unable to find or fix the situation.

- Palestine, TX, 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

Both of my infotainment screens went off completely while driving and this is very frustrating and unsafe I can-??t see my speedometer or navigation or anything else and this puts my safety in danger urgent urgent please investigate this matter asap Thanks

- Silver Spring , MD, USA

I was driving on the interstate and the infotainment and drivers dashboard display cut off. I attempted to turn the car off and back on and nothing happened.

- Acworth, GA, USA

Service High Voltage System warning.

- West Jordan, UT, USA

Start vehicle and warning lights flash. "service high voltage system" Drove to service center. Heat did not work on the cold morning. Defrost would not work. Service center informed me the main 440 volt battery needs replacing. wait times, one to two months for new battery.

- Sequim, WA, 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

Charging Port. car will not charge no more under 6000 miles under 10 months of ownership. I have a 3 year at least. I haven't even had it a year yet. No vehicle now waiting to hear back from Honda. They gave me a loner the dealership. Did I think this is an unsafe feature of this vehicle? And I think I should receive. A new vehicle. This vehicle needs a recall, so no one gets hurt. Or stranded on the side of the road. Because the car won't charge no more. Please help me with this matter sincerely. [XXX] of Portland Maine. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Portland, ME, 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." My Prologue only has 1,096 miles on it.

- Boston, MA, USA

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

- Lynbrook, NY, USA

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.

- Englewood, NJ, USA

I have had this car since December 7th and I leased it brand new. It has been in service multiple times for multiple issues. Only one of the issues has been fixed while the rest they have not been able to diagnose. The cv axles have an issue and when I took the car back to Honda they said corporate Honda has not come out with a solution yet but the car is safe to drive"?" The car makes a noise anytime I do a right turn and it has progressively gotten worse.

- Newport News , VA, 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

I-??ve had a couple of issues with this vehicle along with others I know with the same car. 1. When charging it has said a couple of times -??not sending power-?? when public charger seems to be in good condition & there being funds on the card. 2. When closing the panoramic sunroof right when it-??s about to close it opens back up. It takes me multiple tries pressing and holding down the button to get it to close. 3. Both screen displays have gone completely black out of nowhere and will not turn back on until a couple of hours later. 4. Sometimes in perfect Sunny condition with nothing blocking the windshield the Forward collision Safety feature will appear on the dashboard saying -??forward collision system unavailable.-?? 5. The battery seems to not last long and even going at speed limit or slower the battery will still drain fast.

- Manasquan , NJ, USA

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

- Brookfield, CT, USA

Component/System Failure: The high-voltage battery system in my 2024 Honda Prologue failed. According to the Honda service center, the battery needs to be replaced. The vehicle is currently at the dealership, not ETA when the part will arrive or when will I get my car back. Safety Risks: The failure prevented the vehicle from charging, which could have left me stranded. Additionally, the system displayed multiple warnings, and since this is an EV, a malfunctioning high-voltage battery poses a potential fire or electrical hazard. The car was not drivable due to the severity of the issue. Problem Confirmation: The issue has been confirmed by the Honda dealership, which diagnosed the high-voltage battery as the cause of failure. They recommended a full battery replacement. Inspection by Others: The vehicle has only been inspected by Honda service technicians at my local dealership. It has not been reviewed by the manufacturer directly, law enforcement, or an insurance representative. Warnings and Symptoms: The failure first occurred two days ago when I attempted to charge the vehicle at home, but it would not charge. Multiple warning messages appeared on the dashboard, including: "Service High Voltage System" "Service Engine Soon" A red car icon with an exclamation mark I attempted multiple times to charge, but the vehicle continued displaying the same warnings. The next day, I brought it to the Honda dealership, where they confirmed the high-voltage battery issue.

- Yucca Valley, CA, USA

Service High Voltage System warning. Have had this come up on my car and I have seen that this issue has happened to many Prologue owners. The issue is 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 right.

- Oyster Bay, NY, USA

On February 25, 2025 my car decided to throw the code that said service high voltage system. I was on my way to drive my son to school. I have been driving for about two minutes and then the code showed up I called my dealership at 10 AM that morning and told them what was going on. They told me to come down there and they will take a look at the car. I bought this car on February 14, 2025. It has 370 miles on it at the time when I got to the dealership the first person turned me back and said that they couldn-??t do anything because on the way to the dealership, the code went away. I left the dealership went to charge my car. It charged for 3% at the public charger and then it shut off. I went back to the dealership and this time they kept my car because the code was on when I arrived and the other guy apparently made a mistake and sent me home when he wasn-??t supposed to. I got a loaner. I finally got my car back on March 8, 2025. I drove it a little bit yesterday and then I drove it a little bit more today which is march 9, 2025 my day was winding down so I figured I would go to target and get what I needed and charge my car while I was there. I went to the public charger. The car charge for about three or 4% and then it shut off I got the alert on my phone so now I must go back to the dealership when they open because today is Sunday and take my car back there. The code is now back on the car. apparently, while at the dealership, they couldn-??t see anything while they had the car the code wasn-??t showing up and then the dealership said that they had the Honda engineers look at the car and talk to him about it, and they couldn-??t find anything wrong and they told me to bring it back in if it happens so I guess that-??s what I-??ll do currently the car has about 430 miles on it. I got it back and it had 390 something miles on it.

- Roseville, Mn, MN, USA

Mild weather, 48 degrees. driving home at night. Lights on dash start to go off: "Service vehicle soon" "Reduced Acceleration Drive with Care" "Service High voltage" "Unable to charge" Heat stopped working and vehicle unable to charge. Brought into service the morning after and waiting for service department to get in touch.

- Ramsey, NJ, USA