All of sudden these 3 errors started showing on the car dashboard: 1. Service High Voltage System 2. Reduced Acceleration Drive with Care 3. Service Vehicle Soon When try to charge the vehicle, car was unable to charge with this error on the dashboard "Unable to Charge, Service charging station". Currently car is in Honda Service station since Jan 13th 2025. I received an update from the service coordinator that car is having an issue with the AC system and Honda is aware of this issue but there is no ETA on/or how to fix it.

- Cupertino, CA, USA

My sunroof has a constant issue when i fully open it and then try to close it. When I tried to close it the sunroof does close, but it immediately opens back up by itself. It takes me 5 to 10 tries to try to close it back up once it closes and you open it back up it does it again and it reopens by itself.

- Chicago , IL, USA

For the second time in 7 months since I-??ve owned the car, I need to get it serviced for an error on the panel names -??System Voltage Error-??. As a result, the car can-??t be charged (EV), the heating doesn-??t work in the middle of winter, and acceleration is reduced.

- Middle Village, NY, USA

The EV battery would not charge. There were 2 messages, but nothing to indicate the issue, except that it was unable to charge. Took it into a dealer for service who stated that the freon was low. Without freon, the battery won't charge due to possible overheating. This was a brand new car - owned 2 days. They refilled the freon and charged the car. They could not find any leaks.

- Hampton, VA, USA

1. Service high voltage Battery warning. HVAC system stopped working and vehicle is in limp mode. 2. Vehicle clicks and clunks in the front end noise coming from the CV joints on both side. Dealership says that it is "ok to drive" parts are on back order with no ETA.

- Waterville, OH, USA

When pulling out of the driveway or parking spot and turning sharply to the left or right a clicking sound presumably from the CV joint can be heard. It has not been confirmed by the dealer, the vehicle is in the service department at leadcar honda due to -??service high voltage system-?? and -??unable to charge-?? messages. This message puts the vehicle in limp mode causing an unsafe situation and inability to charge had the potential to leave me stranded in frigid winter temperatures. The vehicle has not been inspected be the dealer because they only have one person certified to work on Prologue. The warning messages popped up on the screen and the warning lamps lit up on the dashboard

- Rome, NY, USA

Service High Voltage Error came on and no heat was emitting from the HVAC. This is a valve malfunction that cannot be replaced in any timely manner and renders the car undriveable.

- Valparaiso, IN, USA

The dash and infotainment shut down and went completely blank screen while driving. No speedometer. No information on how fast I was going.

- Oceanside, CA, USA

I turned on the car and backed out of my driveway and my infotainment and gauge cluster screens both went black. I pulled over to the side of the road because I could not see what my speed was and I couldn-??t see what gear I was in. I restarted the car multiple times and it finally turned back on. I also realized later that I wouldn-??t be able to turn on my headlights if it was dark outside. This is very unsafe and should be fixed. I do not believe I am the only one with this issue as I have seen many many others.

- Idaho Falls , ID, USA

when you setup your EV to charge over night to 80 percent or what ever percentage it will charge more then what you programmed it to do....it will be more. Which can be very dangerous. It continues to do this since day one.

- Redmond, WA, USA

My 2024 Honda Prologue had less than 900 miles on it when "High Voltage Warning" appeared on my dash, and warned me to take the vehicle to a service center immediately - I did, and now my Prologue has been in service for 20 days straight. (As of 1-17-25)

- Gaithersburg, MD, USA

Anytime the headlights are turned on, the center console Infotainment system starts scrolling through random menus and initiating button presses on any option available in the menu it is on. It also becomes completely unresponsive to human button presses while this happens. This becomes a huge safety issue as any vehicle system that is available from a button press can be turned on or off randomly. This problem is repeatable and happens every time the headlights are on.

- East Northport, NY, USA

We had our Honda Prologue just a couple weeks and decided to drive to the mountains. On the way up, we got several error messages: "Service High Voltage System", "Service Vehicle Soon" and "Reduced Acceleration, Drive with Care". The car was still driveable, but we could not charge it at were stuck in the mountains. We had to get towed back to the dealer. It was in for a couple days before being returned. They said they had: 1) "Done a hard battery reset"; and 2) serviced the A/C system". The car seems to be working OK but we are wary of taking it on longer drives. This seems to be a common issue on Hondaprologue forums.

- Davis, CA, USA

Unknown other than noise and knocking

- Commerce, TX, USA

On 13 August 2024 I was driving my 2024 Honda Prologue when the DIC and infotainment screens went blank. At this time with no information displayed on any screen, the car was unsafe to operate. I drove the car straight to the local dealer, Tony Honda. The dealer was unable to diagnose the problem. After contacting Honda Tech support, they decided the audio control unit was defective. After 65 days the dealer was able to replace the unit and it seems to work properly. Honda informed the dealer the car was safe to operate without any display screens or information. Actually the car was unsafe to drive with no speedometer indication or any other control functioning.

- Kailua-Kona, HI, USA

After charging my car from ~20% to 80% over the course of ~8 hours, I powered on the car, reversed out of my parking space, and began driving. Shortly after (<1 min), I noticed that both my Instrument Panel screen and my Infotainment screen had shut off and were black. I continued driving for another 2-3 minutes before pulling into a parking lot. In the lot I powered the car on and off many times, and also powered the car on in Service Mode. During each of these power cycles both screens remained black. About an hour later I returned to the car and again the screens did not turn on. I drove the car about half a mile, stopped and turned it off again for around 30 minutes. After coming back to the car this time, the screens worked as normal. My safety was put at risk because without my instrument panel, I lose almost all feedback and situational awareness of the state of the car. Also, while backing out of a parking space while the screens were not working, I did not have access to my back-up camera. I have not yet taken the car to a dealer or mechanic. I am writing this report directly after the screens resumed operating. I did not see any warning lamps or messages prior to the failure. But when I entered the car initially, I did notice that the infotainment screen was turned on and at a screen that otherwise is not seen until I turn on the car.

- San Diego, CA, USA

Both screens suddenly turned black while I was driving. I had no way to restart the screen, even after shutting off the car and turning back off. The two black screen remain on, but no way to see charging status, speed, control lights, etc.

- New York, NY, USA

I turned my car on and the screens were on, I put it in drive and both screens went black, I pulled over and I restarted the car multiple times, nothing would come on. I had to drive one hour to work without being able to see how fast I was going, or how many miles. It was completely dark and this is a serious safety issue.

- Tampa, FL, USA

About 30 miles after starting a 1,500-mile road trip, the infotainment screen and driver instrument panel both went completely blank. After about 60 seconds, the system apparently rebooted, restoring both screens to normal operation. However, during that minute I was driving at approximately 75 mph on Interstate 90, and I had no access to certain vehicle controls and no way to verify my speed or see messages about cruise control. The error generated no warning lights or error codes, so I have not reported the issue to the manufacturer or dealership. The issue occurred with the odometer at about 180 miles. The odometer is now at about 1650 miles. I have not experienced the issue again.

- Rapid City, SD, USA

On Dec. 19 the infotainment system and the instrument panels both went blank. I was driving away from my home. I touched a button on the steering wheel that controls the content of the screen that is the main instrument panel. The heads up display failed as well. The car kept running, but I could see any information such as my speed, my battery level or any of the other usual information. I could not reboot the system by myself when I called the dealership, but they said that after I handed it over to them, that it was rebooting. I took it back home and it seems to be working normally, but nothing Planet Honda did will guarantee that this will not reoccur. Planet Honda said they have heard of this happening to others, but that it's rare. If you google this problem, you can see other Prologue owners have had this happen.. This is very upsetting and potentially dangerous to not know your speed or to be able to control the lights of the car and other items. \

- Evergreen, CO, USA