2024 Honda Prologue

On April 19, 2025, the "Engine/Battery Fault" warning light illuminated on my vehicle. At the time, the car had only 1,398 miles on the odometer and had been purchased just one month prior. Shortly after the warning appeared, I received a diagnostic report from OnStar indicating fault code U362A. The vehicle exhibited significantly reduced acceleration and limited charging capability. Concerned about the issue, I brought the car to the dealership where I purchased it for inspection and service. The dealership performed a reset of the main computer system, which cleared the warning light. However, I remain concerned about the reliability of the vehicle. If this issue were to occur again—especially while driving in a remote area—I could be left stranded without the ability to drive or charge the car. While the problem has not resurfaced since the reset, I am worried it may return unexpectedly, affecting my confidence in taking the vehicle on longer trips.

I activate the right turn signal then turn right. When the turn is complete and the steering wheel straightens out, the right turn signal is automatically cancelled (as is normal). However, one out of about five times, after the right turn signal is automatically cancelled, the *left* turn signal activates for three blinks, as though it was momentarily pressed. The dealer was able to duplicate the problem, then "test drove another Prologue in stock, duplicated concern on known good Prologue." Then the dealer went on to conclude, "Characteristic of vehicle, no problem found." The service manager and the general manager at the dealer state that this is not a safety issue. I had let the dealer know, and it is in writing on the repair order, that a car coming in the opposite direction to me turned left in front of me thinking I was turning left (because my car's left blinker was on after I had just completed a right hand turn). I braked to avoid hitting this other car. I contacted American Honda and created a case number. A few days later the American Honda agent confirmed exactly what the dealer stated. First, that Honda does not consider this a safety issue and second, that it is characteristic of the vehicle and therefore no problem exists.

While sitting idle at a traffic light, my forward collision notification beeped in spite of my Honda Prologue and the vehicle in front of me being completely still. Otherwise, no movement was taking place in front of my car. I captured this on camera during an incident when this occurred briefly. I would be happy for Honda to inspect this. I haven’t reported this to anyone else at this point. No other warning lights or messages indicated this could be a problem. This failure of my forward collision warning system has occurred about 50 times since purchasing this Prologue in late December of last year (over about 7,500 miles). At times, the beeping won’t stop unless I put the car in park. I learned the locations of the sensors behind the rear-view mirror and on the bumper. I cleaned the outer surfaces off to no effect.

I turned my car on and it made an extremely loud, dangerously loud, loudest noise you have ever heard loud, static noise. I turned it off and waited and turned it back on and same thing. I tried shifting it to drive, and the noise stopped. However, every time I did anything where the vehicle would make a noise, it would make a full-volume static blasting noise instead. It was not safe to drive and I am afraid it has permanently damaged my eardrums. This is a known issue (see links below) and needs to be fixed immediately. [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

12/13/2024 – Vehicle purchased New 01/22/2025 – Heating system began to malfunction. 01/31/2025 – Received dashboard warnings: “High Voltage System,” “Service Vehicle Soon,” and “Reduced Acceleration.” 02/01/2025 – Vehicle towed to the dealership for service. 02/10/2025 – Vehicle returned to us after repairs. 03/06/2025 – Same errors reappeared - “High Voltage System,” We contacted Honda Customer Service and filed a claim (Claim #15405227) 3/6/2025 - Vehicle towed to the dealership for service. 04/04/2025 - Vehicle returned to us. We were assured the issues were fully resolved. We were told a Honda technician had been dispatched to support the repairs and ensure all work was handled thoroughly. 04/09/2025– Same error messages appeared - "High Voltage System" Car towed to dealership again for repair 5/6/2025 - Vehicle is still being repaired

The contact owns a 2024 Honda Prologue. The contact stated that while driving at an undisclosed speed and turning the steering wheel, there was a clicking sound coming from the front end of the vehicle. The sound had become progressively worse. The contact stated that after starting the vehicle, the AC was inoperable, and the contact became aware that the radio remained on for an additional 1-2 minutes after turning off the vehicle. While locking the vehicle, the feature that illuminated on the instrument panel displaying a message that all doors were locked, failed to operate intermittently. The contact stated that while charging the vehicle, the charge exceeded 100 percent charge. The contact stated that the vehicle also experienced several electrical malfunctions intermittently. The vehicle was taken to the dealer who diagnosed the vehicle; however, the contact was unable to recall the results of the diagnostic tests. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 2,000.

Took my vehicle in for its first service. During the multi point inspection I was informed that my right front cv axle was defective and slinging grease everywhere. Covering the front brake caliper, rotor and pad in axel grease. I find it odd that this happened as I just had to have both front cv axels replaced 400 miles ago as the too were defective. This is a known issue with the Prologue and Honda refuses to fix it.

Vehicle with purchase on April 15, 2025 pre own with only 5800 miles. Drove the car for less than 2 weeks on April 28,2025 a vehicle warning pop-up “ high voltage service error” I took it back to Honda dealership. A code U3620 came up. The code indicated a high voltage battery replacement needed. Currently ETA for the parts is not available.