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).
2024 Honda Prologue electrical complaints
Page 5 of 7: complaints 101 to 130 of 171, newest first, as owners wrote them.
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)
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.
High voltage system errors. Won’t charge. Car is 2 weeks old!
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.
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.
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.
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.
High voltage system errors. Won’t charge. Car is 2 weeks old!
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.
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.
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.
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.
Rear back up camera
“Charge Door Open” warning appears on dashboard when the charge door is completely closed. This warning appears incessantly while driving. Additionally, “Service High Voltage Charging System” appears along with the “Charge Door Open” warning. The problem is documented on video at 780 miles on the odometer. These warnings occurred at low speed driving between 30 and 35 mph.
The battery failed at 2k miles and needed to be replaced. Both axles need to be replaced due to failed CV joint. There is clicking with turns. When backing up, emergency braking engages and leads us to stop in the middle of busy roads. This is a safety issue.
The buttons for changing songs have not worked at random times after turning on the vehicle. Also the car has had some problems when it comes to detecting a vehicle in front causing the car to slow down when in adaptive cruise control
Leased the 2024 Honda Prologue EX AWD on [XXX] and attempted to get the HondaLink app setup so I could see the charge level and other vehicle features. Also wanted to select my charging option and access EVGO credits. Received the text link but would not activate. I waited a week before stopping by the dealership to see if it would correct itself. Contact Honda Support and they resent the text link and told me it would take up to 24 hours to activate. I waited 48 hours and called Honda support, I proceeded to tell them that in addition to the app not working the integrated Google Maps was not functioning as it indicated the car was in Mexico, when in fact I was in Virginia. The Honda support person elevated my case to 2nd tier support and they indicated it would be 24 to 48 hours before I would get a response. I talked to tier 2 support person the next day and after some basic troubleshooting they transferred me to OnStar support as none of the OnStar buttons functioned either. After troubleshooting with OnStar they told me that 5he telematics module was probably bad and that I needed to take it to dealership, so 11 days and less 400 miles later I took my vehicle to the dealership. That was late on [XXX]. The dealership contacted me on the following Monday to tell me they need the car a little longer so their technician that was most familiar with the Prologue could look at it on Tuesday. The dealership called me back on Tuesday and said the telematics module needed to be replaced, but it was on a nationwide backorder until the middle or end of March. They did tell me the vehicle was drivable, but my concern is that without OnStar if I was in an accident and incapacitated it wouldn’t be able to contact emergency services. I did receive an update that the part is now expected to arrive April 6th, so my vehicle sits at the dealership still and I have now made 3 payments on it even though I have only driven it for 11 days. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
While driving on the gateway both my screens shut off. The one on my driver dash that displays my speed etc. my telematics screen also shut off. Stayed off while driving for about 5min then suddenly reset.
While driving in traffic, the car unexpectedly applied the brakes and displayed a 'Service High Voltage System' warning on the dashboard. Shortly after, another message appeared: 'Service Vehicle Soon,' followed by 'Reduced Acceleration - Drive with Care.' The car isn't charging and lacks the speed needed to drive on the highway.
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.
High Voltage system error 2 days after it was determined that it was fixed at the dealership.
Vehicle restarted while on the freeway. My Child was in the car and was extremely frightened.
High Voltage error in car and unable to charge at 3100 miles. Now without a car and dealership/Honda will not give courtesy car. The front suspension makes clicking noise in cold weather when turning.
I have had my prologue for about two months now and have noticed that I receive a warning about reduced acceleration "randomly." I say “randomly” because I’ve observed that it appears during two specific situations. I get that warning whenever I’m low (less than 20%), so this is not random as it seems consistent. The other time this occurs is when I am driving or just starting my car (the battery percentage doesn’t matter, as it happens when it’s between 30% and 80%. Also, it happens when the temperature is below and above freezing). However, the latter situation occurs randomly and seems to happen more frequently while driving, though it also occurs when I am just starting the car. On top of that, the Forward Collision Warning system is extremely sensitive and has caused the car to brake hard unnecessarily on me with and without Adaptive Cruise Control enabled. Sometimes it even warns me of something that isn't even there.
Multiple warnings came on dash -Service vehicle soon -Service high voltage -Reduce acceleration with care -Car with exclamation, batteries with exclamation, sing battery and a turtle. -Car unable to charge On-Demand Diagnostic information from on star. The Hybrid/Electric vehicle powertrain controller requested malfunction indicator lamp illumination, please refer to codes from VICM The Lithium-Ion battery is not performing as expected. An issue has been detected in the battery conditioning system which provides heating and cooling for the battery pack on your electric vehicle to ensure efficient operating conditions.
I bought my car in mid-December and twice in the space of driving it less than 300 miles I got warning lights regarding a "high voltage" problem and to go to the dealer immediately. I did both times. The first time they said it was due to the robot installing some valves backward and also the refrigerant was low. They put me back on the road and it happened again after a few short drives. My car has been in the shop ever since. It is now Feb. 10. They now say that there is a badly designed hose that leaks refrigerant, and they are waiting for it to be redesigned and sent out and it is on national backorder. They estimate it should become available by end of February. I want this complaint logged into the system in case it happens again and because I am sure many people have this problem, having read all the complaints on the Honda Prologue forum online.
Complete Electric Failure multiple times now. Been in the shop multiple times.
Twice the prologue warnings have come on that state “service high voltage system" and "reduced acceleration. There is no AC/HEAT in the vehicle under 35 degrees. Under 6000 miles
I was driving on the freeway when a few error lights came on—the Reduced Acceleration, Propulsion System Icon, and a turtle icon on the dashboard and I had to floor the accelerator pedal to maintain my speed. I then pulled over, and the vehicle wouldn’t shift into drive or reverse. It gave an error message saying “conditions not meet.” Eventually, the car started working again. This is an ongoing issue with the car and Honda doesn’t want to do a buyback, this car is a lemon. I keep taking it to the dealer and all they do is clear the codes and state they can’t “duplicate” any of my concerns.
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