What 137 owners told NHTSA about the 2025 Honda Prologue EV

On June 11, 2026, my 2025 Honda Prologue displayed a High Voltage System Alert immediately after I attempted to charge the vehicle. The vehicle would not accept a charge and became inoperable. I brought it to the dealership the same day, and the vehicle has remained there since. The dealership first replaced the charging port, but the vehicle still would not charge. On June 24, 2026, the dealership informed me that the transmission lines from the charging port to the battery needed to be replaced. Since that date, I have not received any updates, repair timeline, or confirmation that the issue is being addressed. The vehicle is currently unusable and cannot be charged. The high‑voltage alert indicates a potential electrical system failure involving the charging system and high‑voltage components, which may pose a safety risk. The defect has left the vehicle inoperable for over a month with no resolution.

NHTSA ODI 11750362

Drop off a few days after receiving vehicle. Picked up and dropped back off the same day due to issue repeating it self after being told there was no issue. Parts were supposedly replace on one of the occasions. No real time spent on the vehicle according to invoices. 8/28/25 -9/4/25 9/4/25 - 9/15/25 9/24/25 - 10/14/25 I have brought the car in for the same problem multiple times without it being rectified. I currently have videos and pictures from when this started to this current time. There are also other customers that have the same complaints that I do. Below is a list of issues that have been going on since first complaint including continued first complaint. I do believe that this is an issue and is a danger due to the reverse camera glitching due to the screen, not being able to get out of the screen, sometimes can not leave a parking space due to the sensor says that there is something in the way where indeed there is nothing. Also can not pull out of drive way during snow due to the car automatically breaking for snow. The collision for the front is always going off when there is no need for it to go off as this can cause someone to unexpectedly stop due to this being something that is supposed to be a warning. If this could happen to the vehicle constantly without a solution then this could be connected to something much more serious. There are other issues that have gone on as well that I have slowly started to notice and pay attention to. I do believe that the amount I am paying for this car it should not have these issues with out explanation. Clearly this is common and on going. One thing can lead to another with these issues. The screen in the middle of the dashboard —- Screen goes black for no known reason Screen flashing Screen is rainbow Touch screen will not work at these times When screen is glitching you can not turn volume down or off, disconnect phone, charging port goes out. Can not back out of parking space due to sensors going off.

NHTSA ODI 11735944

While driving yesterday the service high voltage system light came on again. I have brought my vehicle to Honda 2 other times for the exact same issue. They fix whatever the issue is and the problem happens again. That last time it was about a month after bringing it to them but this time is has been 3 possibly 4 months but I have have the car less than 1 year.

NHTSA ODI 11732303

As I was driving the car this error message came on. The battery was depleting faster than usual. Luckily I was able to get to a Honda dealer asap if not the car would go into “turtle mode” could stall in the middle of traffic. Also probably could not charge the car again due to this issue.

NHTSA ODI 11731980

This issue has occurred twice. The first time was at approximately 3,000 miles, and the second time at around 7,200 miles. On both occasions, the vehicle lost power and displayed a warning message stating “Service High Voltage System” along with a “Reduced Speed” notification. During these events, the estimated driving range dropped significantly, charging was limited to approximately 25%, and acceleration was severely restricted, indicated by a turtle icon on the dashboard. After the first occurrence, the vehicle remained undrivable for approximately three days over Thanksgiving. By the time I was able to bring it to the dealership on the next available business day, the warning light had turned off. I was advised to bring the vehicle in immediately if the issue happened again. The issue did not reoccur for about three months. When it happened again, I was out of town and the estimated range dropped from over 100 miles to around 60 miles. I was able to make it home without requiring a tow and brought the vehicle to the dealership the following day. At check-in, the service advisor observed that the warning lights were still active. However, later that day I was informed that by the time the vehicle was inspected, the warning lights had turned off, and no action could be taken. Based on information found in online owner forums, this appears to be a known issue potentially related to a defective component. It has also been suggested that the issue is more likely to occur in colder conditions. Due to the unpredictability of this failure and the loss of power and range when it occurs, I do not feel confident in the reliability of the vehicle, particularly for longer trips or travel in remote areas.

NHTSA ODI 11730100

Upon start-up the driver display was off, showing no information. Center infotainment display remained on. Attempted infotainment reset by pressing and holding the hang-up call button on the steering wheel, and after approximately 30 seconds the infotainment display turned off, driver display remained off. Shutdown and started car, both screens remained off.

NHTSA ODI 11729743

The camera visibility systems on this vehicle become extremely dark and largely unusable at night. This affects multiple cameras, including the rear backup camera, which is the most problematic. In low-light conditions, the display does not provide a usable image of the area around or behind the vehicle. When reversing at night, the rear camera image becomes so dark that pedestrians, obstacles, or other vehicles behind the car cannot be seen. This creates a significant safety hazard because the driver cannot rely on the camera system to safely maneuver or reverse the vehicle. All rear lights and exterior lighting on the vehicle are functioning properly, which suggests the issue is related to the camera system itself, image processing, or the vehicle’s configuration for low-light conditions rather than a lighting failure. Because the rearview camera system is intended to provide rear visibility and prevent back-over incidents, the system failing to provide a usable image at night defeats its intended safety purpose and creates a risk of a back-over crash or collision. The issue has been persistent since the vehicle was delivered and occurs consistently during nighttime operation and other low-light conditions. The rear visibility system appears unable to perform its intended safety function under normal nighttime driving conditions, raising concerns about whether the system is functioning as required under Federal Motor Vehicle Safety Standard No. 111 (Rear Visibility).

NHTSA ODI 11723518

I have had multiple incidents where I'm driving and the instrument cluster goes black and either takes multiple minutes to come back on or I have to turn the vehicle off and back on to get it to work.

NHTSA ODI 11722430

When reversing in a dark or low light area I can't see behind the vehicle on the backup camera display. It seems like there is no night vision and the reverse lights don't illuminate behind the vehicle enough to see in the display or the rearview mirror. I've almost backed into objects because you cannot see behind the vehcle.

NHTSA ODI 11722433

I have had multiple occurrences where as I'm accelerating into a turn at normal /slow speeds the traction control activates and my vehicle almost comes to a stop almost causing an accident with the vehicles behind me. This was on dry pavement and not heavy acceleration so the traction system should not have activated.

NHTSA ODI 11722435

I have had multiple occurrences where as I'm backing out of my garage or a parking spot, the vehicle stops suddenly and there is nothing behind me.

NHTSA ODI 11722439

Infotainment screens went black as I was shifting from reverse to drive. It took about 15 seconds for the screens to come back.

NHTSA ODI 11722575

Vehicle, in one-pedal-drive, began to enter an intersection from a stop sign into a left turn--mild reasonable torque applied onto a 25mph street. Vehicle entered intersection and began stuttering/slow/shaking until near/complete stop and loss of acceleration in middle of busy intersection. Traction control light illuminated briefly prior to resumption of acceleration. Road conditions were dry, slightly foggy. There was no reason for safety systems/ABS/Traction control etc. to over react. Honda dealership reported no relevant code to explain incident--which indicates vehicle also did not flag it as an aberration. Vehicle had just been at dealership day prior and received software update and reported inspection. Honda dealership will not take further action unless reproducible with error codes to tell them how to address. Specific component, electrical, or software failure reportedly unknown and remains unaddressed by Honda at this time.

NHTSA ODI 11721933

The vehicle has twice displayed a “Service High Voltage System” warning followed by “Reduced Acceleration – Drive With Care.” When this occurs, the vehicle enters a reduced-power (turtle) mode that severely limits acceleration. Cabin heat also stopped working, and the vehicle would not charge beyond approximately 25%, restricting driving range. OnStar diagnostics reported a critical error. The vehicle and diagnostic history are available for inspection upon request. The first incident occurred while driving around town. Although I was close to home, the reduced acceleration created concern because the vehicle could not respond normally to traffic. The second incident was significantly more dangerous and occurred in heavy traffic and on the freeway about 40 miles from home during heavy rain. The limited acceleration made merging and maintaining a safe traffic speed difficult, placing myself and others at risk. I have only been able to get the dealer to take the vehicle in one time, specifically for this issue, and that was because the warning lights were still on at arrival. Staff observed the warnings at check-in, but by the time the vehicle reached the service area, the lights had cleared. The dealer stated they could not perform repairs without active warnings, though stored codes reportedly indicated a low-voltage condition. Additionally, a clicking noise from the wheel area began about 1,500 miles ago and occurs consistently when turning, similar to a CV axle concern. During a separate visit, the dealer put in writing that they could not do anything about the noise and did not diagnose or inspect it, which left me uneasy about potential drivetrain safety. The intermittent high-voltage fault, reduced acceleration, charging limitation, loss of heat, and unresolved drivetrain noise create ongoing safety concerns due to the unpredictable nature of the failures.

NHTSA ODI 11719218

The contact owns a 2025 Honda Prologue. The contact stated that while parked and attempting to charge the vehicle, the vehicle failed to charge. The battery warning light was illuminated, and the message "Service Critical High-Voltage Battery" was displayed with a flashing red battery in the corner. The vehicle was towed to a dealer and was diagnosed with a critical battery failure. The vehicle was not repaired; however, the battery was reset, and the vehicle was drivable. The failure had occurred approximately five times. On another occasion, while driving at an undisclosed speed, an unknown warning light illuminated, and the message "Adaptive Cruise Control Unavailable" was displayed. The vehicle was taken to a dealer, but it was not yet diagnosed. The manufacturer was not notified of the failure. The failure mileage was approximately 8,000.

NHTSA ODI 11717062

Multiple warning lights coming on for no reason Car not charging Dealer ship not able to detect issue

NHTSA ODI 11715324

First of all, my Honda app took me a month to get into and sign in due to app issues which are very annoying and when I drive my car and turn the wheel, it makes axel sounds my screen shut off on me. One time I got a high voltage system warning the battery drains out quick. The door hits the other door every time you open driver side

NHTSA ODI 11712785

Unknown electrical issue in the cold. Saw posts online about people getting "High voltage system" errors and after a few days in the cold it happened to me. Dealership couldn't find the issue and simply cleared the error codes telling me to come back in if it happens again. Huge issue, as it limits the range to protect the system from further issues but doesn't give me enough range to even drive home from work if the errors appears during my commute. Occasionally my front sensors don't work but give no indication of any issues, other times it notifies me that they need cleaned, but not always. Not reliable enough to trust in anything but perfect circumstances. I am also getting the CV joint clicking issue occasionally when turning, unsure if related to cold weather or not but it has only happened in 10-20 degree weather. Sounds very bad when it occurs, not very reassuring when driving a car with less than 6000 miles on it.

NHTSA ODI 11710301

The contact owns a 2025 Honda Prologue. The contact stated that while driving at various speeds, the battery suddenly experienced a loss of power. An unknown message was displayed. The vehicle was taken to a local dealer, where it was diagnosed; however, the cause of the failure was not identified. The vehicle was not repaired. In addition, the contact stated that the failure had progressed over time. The manufacturer was made aware of the failure. The failure mileage was approximately 1,000.

NHTSA ODI 11708855

I received another service high voltage system message literally weeks after I brought my vehicle in and had the issue fixed. I reported this issue last on 11/24/2025 it is now 12/19/2025 and it happened again. The heat in my vehicle seemed to stop working and was blowing cold air. This is just poor design and disgraceful.

NHTSA ODI 11706021

My vehicle recently began displaying the error messages “Service High-Voltage System” and “Reduced Acceleration – Drive With Care.” Since these warnings appeared, my vehicle’s heating system no longer works at all. This defect creates multiple serious safety hazards: 1.No heat in cold weather: Temperatures in my area are currently around 42°F, and the cabin cannot warm up. This creates an unsafe temperature environment for myself and especially for my children while driving. 2.No ability to defrost windows: Without heat, the vehicle cannot defog or defrost the windshield or windows. This severely impacts visibility and creates a dangerous driving condition. 3.Reduced acceleration: The vehicle warns of reduced performance, which may affect my ability to safely merge, change lanes, or respond to traffic conditions. These issues began without warning, and the loss of heating combined with high-voltage system errors makes me concerned about a potential electrical or battery system failure. This is a significant safety concern that needs to be investigated, as the vehicle is not safe to operate in its current state. I request that NHTSA look into this issue, as other owners have reported experiencing this same dangerous combination of high-voltage errors and loss of essential climate-control functions with no resolution from the manufacturer.

NHTSA ODI 11704624

Vehicle makes click-click-click (2-4) on hard over turns with accelerations (e.g. parking lot exit to street) Sounds front right CV/Axle region. Vehicle has intermittent MIL "Service High Voltage Soon" which resolves on subsequent startup, might be linked to scheduled charging within car infotainment.

NHTSA ODI 11703684

Brake by it self on the street multiple times and then when I’m goin reverse it sence sometimes something and does not let me go also the battery does not let me charge more of 20% when the red car on the dash apear and it has a noise when your turning

NHTSA ODI 11703263

My 2025 Honda Prologue Elite is experiencing multiple safety-related issues. The front CV axles make a consistent clicking noise when turning, indicating a possible drivetrain or axle defect. The power tailgate also intermittently and unexpectedly closes on its own while loading or unloading, creating a risk of head injury. In addition, the infotainment screen and digital gauge cluster will randomly shut off while driving—sometimes for up to 30 seconds—leaving me without speed, range, or other essential telemetry while the vehicle is in motion. All of which the dealer will not address or states they can't replicate.

NHTSA ODI 11703055

While driving I received a warning that said “ service high voltage system” that came up on my dashboard. I have had my vehicle just for a couple of months and this is the second issue that I am having with the vehicle since purchasing it. I have taken it back to Honda who is now telling me that they have to do some tests to try and figure out the issue which seems to be a know issue which some forums show that may effect the heating system or cause you to need a complete battery replacement. I have my vehicle in service now waiting to see what the issue is but but for a brand new vehicle there has to be an even bigger problem if the issue is happening not only on my vehicle but on its sister vehicles as well the made by Chevy.

NHTSA ODI 11701154