2025 Honda Prologue

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.

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.

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.

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

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.