Diagsheet

2024 Honda Prologue · symptom sheet

Hybrid or EV system warning, loss of power

  • 86owner reports
  • 5,800median miles
  • 0involved a crash

Newest report Sep 7, 2026 · checked Oct 2, 2026

326 of the 841 complaints on this car are about the electrical system. 86 of those describe hybrid system.

No recall on this systemas of Oct 2, 2026
No crash reportedin 86 reports

Tick what matches of 86 reports

54
31
48
1
6

Hybrid system on other Prologue years

No other Prologue model year has enough reports of hybrid system for a sheet of its own. See every Prologue year.

What this problem usually is

These reports come from hybrid, plug-in and electric vehicle owners whose car put up a system warning and lost power, sometimes dropping into a reduced-power mode on the road. Others describe a car that won't charge, a high-voltage battery or inverter replacement, or a problem that turned out to be the ordinary 12-volt battery all along.

Read the full explainer · Which cars report it most

What got replaced

Owners who name the part that was replaced mention the charger or port (48 reports), the traction battery (12 reports) and the drive unit (4 reports).

Recalls and investigations

No recall on the electrical system covers the 2024 model year as of Oct 2, 2026.

When it happens

The middle half of failures fell between 1,880 and 10,295 miles, from the 13 reports that gave a mileage.

Complaints by the year NHTSA received them: 2024: 2, 2025: 69, 2026: 152'2469'2515'26

Is this a known problem?

The manufacturer has sent NHTSA 2 service bulletins or notices for the 2024 Honda Prologue that deal with this problem. Newest first.

Federal rules make a manufacturer send NHTSA a copy of any notice about a defect that goes to more than one dealer or owner. Most of these are service bulletins, the repair instructions manufacturers send to dealers. NHTSA generally leaves safety recall bulletins out of this file, and recalls are listed separately.

What owners wrote

“The “check high voltage system” warning came on, we noticed the hearing stopped. This started after 12,000 miles. The dealership said they fixed it and gave it back the warning reappeared a few days later, same events we lost heat and then the warning came back on. We have it back at the dealership they still don’t know what’s wrong.”

Filed Dec 26, 2025 · 12,000 miles

“Service High Voltage System alarm + Service Vehicle Soon alarm warning. This with no heat while driving at 10,836 miles. Took in to dealer for service and reportedly a known problem with the freon system and end cap. My thought is this should be a recall fix by Honda/GM because there are many many complaints of it amongst 2024 Prologue Owners.”

Filed Dec 13, 2025 · 10,836 miles

“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.”

Filed Apr 30, 2025 · 5,800 miles

“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.”

Filed Feb 20, 2025 · 3,100 miles

Should you keep driving it?

This page can't tell you that. 0 of 86 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.

File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.

Guide Hybrid warning on the dash? Hybrid and EV battery complaints explained

Other problems on this car