Service Bulletin - During manufacturing, improperly sized bolts may have been used to install the motor mount on the front electric drive transmission module. Improper bolts may cause damage to the drive unit case resulting in an oil leak.
full bulletin at NHTSA ↗2024 Honda Prologue powertrain problems
moderate 98 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Complaints
98
Recalls
0
Avg fix
$2,500
What stands out
Owners have filed 98 powertrain complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners report loud clicking, grinding, clunking, and ratcheting noises from the front CV axles and joints during low-speed turns, especially in parking lots, U-turns, and sharp turns. The noise is reproducible and occurs at wheel-rotation rates, often worse in cold ambient temperatures. In severe cases, owners describe violent shuddering, lurching, and binding sensations that affect steering control and driver confidence. Symptoms typically emerge between 600–15,000 miles, with many owners noting the problem present from early ownership.
Dealers confirm the issue and diagnose defective CV joints and front half-shaft assemblies. However, replacement parts are frequently backordered, leaving vehicles out of service for weeks or months. Multiple owners report that replacement axles and half shafts fail again shortly after installation, sometimes immediately upon pickup. Honda has acknowledged the problem internally and instructed dealers to stop proactive replacements, telling owners the issue is under investigation and does not pose a safety hazard. Owners dispute this assessment, noting that a failing axle could result in sudden loss of power to the wheels or compromised steering control.
A separate but related issue involves "Service High Voltage System" and "Service Vehicle Soon" warning lights appearing at very low mileage (97–700 miles), accompanied by reduced acceleration, inability to charge, and loss of cabin heat. Owners report Honda technicians cite overcharged AC systems, software updates, and battery cooling defects, but permanent fixes remain unavailable. Some owners describe concern about thermal runaway and fire risk. No diagnostic codes are consistently cited across narratives for the electrical warnings.
Failure modes owners describe
Front CV Axle / CV Joint Clicking and Grinding
Front CV axles and CV joints emit loud clicking, grinding, ratcheting, or popping noises during low-speed turns and acceleration. In severe cases, owners describe violent shuddering, lurching, and binding that affects steering control. Symptoms appear early in vehicle ownership (600–15,000 miles) and are worse in cold ambient temperatures.
When: 600–15,000 miles; most common 7,000–10,000 miles; worse in cold ambient temperatures (below ~32°F)
Symptoms owners cite: Loud clicking noise when turning left or right; Ratcheting or grinding sounds from front axle/CV joint area; Clunking and popping during low-speed turns and acceleration; Violent shuddering, lurching, and binding (severe cases); Noise reproducible on every drive; tied to wheel rotation rate; Noise worse in cold weather; No warning lamps or diagnostic trouble codes present
Repairs/costs cited: Dealers diagnose defective CV joints and replace front half-shaft assemblies; parts frequently backordered for weeks or months. Multiple owners report replacement axles fail again shortly after installation, sometimes immediately. Total of four front half-shaft assemblies replaced in one case with same GM part number. Dealers instructed by Honda to stop proactive replacements pending investigation.
Recalls/TSBs owners mention: Honda acknowledges issue internally; dealers instructed not to replace unless obvious physical damage present. Honda states issue is under investigation and does not pose safety concern. No permanent fix available.
Service High Voltage System Warning with Reduced Acceleration and Charging Issues
Warning lights including 'Service High Voltage System,' 'Service Vehicle Soon,' and related battery/electrical warnings appear at very low mileage (97–700 miles). Accompanied by reduced acceleration, inability to charge the vehicle, and loss of cabin heat. Symptoms may recur after software updates or part removal.
When: 97–700 miles; one case at 1,398 miles; some recurring within weeks after repair
Symptoms owners cite: Service High Voltage System warning light illuminated; Service Vehicle Soon warning light; Reduced acceleration; Unable to charge vehicle battery; Loss of cabin heat / HVAC malfunction; Burning odor when heat turned on (one case); Display inaccuracy regarding power usage (one case)
Codes mentioned: U362A (fault code reported in one narrative)
Repairs/costs cited: Dealers perform software updates, system resets, and part replacements. One case cited overcharged AC system requiring removal of 1.270 kg refrigerant and code clearing. Recommended parts for permanent repair reported on backorder with no ETA. One owner reports warnings recurred after initial reset.
Recalls/TSBs owners mention: Honda technicians cite lack of EV technicians and equipment for software updates. No permanent fix confirmed. Dealers attempt resets and software updates; issue acknowledged as potentially related to battery cooling system defect.
Instrument Panel Electrical Short / Intermittent Dashboard Lighting
Dashboard lights and instrument panel blink intermittently or malfunction. One case diagnosed as electrical short related to radio; others unresolved.
When: Low mileage; one case at ~70 miles
Symptoms owners cite: Instrument panel lights blinking intermittently; Dashboard warning lights malfunction
Repairs/costs cited: One dealer diagnosed electrical short in radio; other cases unrepaired at time of complaint filing.
Rear Park Assist Nuisance Braking
Automatic emergency braking system engages falsely and aggressively when backing up, with no obstacle present. Occurs repeatedly.
When: Under 8,000 miles reported in one case
Symptoms owners cite: Automatic emergency braking engages without object in reverse path; Hard braking occurs with false-positive detection; Occurs repeatedly during backing up
12-Volt Battery Failure and Start Issues
12V battery fails, preventing vehicle start. Occurs in early ownership.
When: Early ownership; one case at ~30 miles (purchased with 8 miles)
Symptoms owners cite: Vehicle unable to start; 12V battery failed
Tire Pressure Monitoring System Malfunction
Tire pressure monitor indicates low pressure and remains unresponsive; inflated tires returned at 32 psi without correction.
When: At service visit around 4,900 miles
Symptoms owners cite: Low tire pressure warning despite proper inflation; TPMS unresponsive to correction
Repairs/costs cited: Dealership returned vehicle without addressing tire pressures or investigating root cause.
Brake Warning Lights with Brake Booster Replacement Attempts
All brake-related warning lights illuminate on dashboard with service message. Vehicle in service over 5 weeks; brake booster replaced twice without resolving warning; front calipers replacement attempted.
When: Unspecified mileage; vehicle in service over 5 weeks as of complaint
Symptoms owners cite: All brake warning lights illuminated; Dashboard service message displayed
Repairs/costs cited: Brake booster replaced twice; front calipers replacement attempted. Root cause unresolved.
Infotainment System Failure with Display Blackout
All screens, including radio and instrument cluster, go dark during highway driving, eliminating access to speed and range information.
When: During highway driving; vehicle had less than 8,000 miles
Symptoms owners cite: All screens and display go black; No access to speed or range readout; Radio goes out
Repairs/costs cited: Dealership performed factory reset to restore functionality.
Interior Component Detachment
Interior component near rearview mirror detaches while vehicle is in motion, creating distraction and safety concern.
When: During ownership; specific mileage not stated
Symptoms owners cite: Interior component detaches while driving; Creates distraction hazard
Door Window Leak
Driver's side door window leaks during rain or car wash, allowing water to drip onto driver's shoulder.
When: From day 1; present at 7,500 miles
Symptoms owners cite: Door window leaks water during rain; Water drips inside cabin onto shoulder; Leak also occurs during car wash
Synthesized from 98 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
When making sharp turns, the vehicle makes a clicking sound. Honda indicates they are currently investing the issue but at this time does not have a solution. This issue has been ongoing since the vehicle was acquired in August 2024. The issue is worse when turning to the left, and during cold weather.
A few months ago there was a grinding and loud knocking noises being generated from passenger side of vehicle. Over the course of a month the noise became louder and louder. The issue was reported to Honda dealer as soon as issue started 10/13/25 however the soonest the Honda dealer could get it in for service was 10/29/25. The dealer notified us that both front axles needed replaced however…
Had powertrain trouble with your 2024 Honda Prologue?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2024 Honda Prologue?
It's a documented issue but not catastrophic. 98 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Based on the 98 complaints filed, powertrain issues most often appear around 5,500 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2024/Honda/Prologue.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.