Service Bulletin - Vehicle-Wide Programming (VWP), also known as SPS3-VWP, is a feature within Techline Connect (TLC) to update all applicable control module software at the same time. When initiated, all applicable updates are done in parallel, instead of the conventional individual control module update. Customers may have complaints or concerns that may get resolved by doing this software update.
full bulletin at NHTSA ↗2024 Honda Prologue electrical problems
moderate 118 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Complaints
118
Recalls
0
Avg fix
$850
2crashes
3injuries
What stands out
Owners have filed 118 electrical 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 electrical 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.
Service Bulletin - Vehicle-Wide Programming (VWP), also known as SPS3-VWP, is a feature within Techline Connect (TLC) to update all applicable control module software at the same time. When initiated, all applicable updates are done in parallel, instead of the conventional individual control module update. Customers may have complaints or concerns that may get resolved by doing this software update.
full bulletin at NHTSA ↗Service Bulletin - An update to A11 Radio Control Module software to address known issues.
full bulletin at NHTSA ↗Service Bulletin - The A11 Radio Control Module requires an update due to various electronic issues.
full bulletin at NHTSA ↗Service Bulletin - A Malfunction Indicator Lamp (MIL) may illuminate, or a “Service High Voltage” message may appear. Additionally, the 12-volt battery may intermittently or persistently discharge due to an internal Battery Energy Control Module (BECM) calibration anomaly causing the setting of specific DTCs related to battery performance and communication.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2024 Prologue has compiled 113 electrical complaints pointing to systemic problems across telematics, battery, charging, and infotainment systems. High-voltage battery warnings appear within days to months, often accompanied by inability to charge and sudden shutdown; dealers confirm assembly defects like swapped sensors and faulty AC valves but can't source replacement parts for weeks or months. Multiple owners report being left at the dealership for 80+ days over six months without resolution. Screens—both instrument cluster and infotainment—go black without warning while driving, removing speed readout and climate controls; one fix required a 65-day radio module replacement. Brake systems fail or engage unexpectedly: one owner jumped from a moving vehicle on the highway with no response to the pedal; others report unwanted braking at low speeds. HondaLink app and OnStar connectivity crash or never activate, locking owners out of critical vehicle data and emergency services. Charging stops mid-cycle or charges past user-set limits despite repeated attempts to control it. Turn signals activate incorrectly after turns; forward collision warnings sound constantly with no vehicle present. Dealerships often cannot reproduce issues or claim they're "characteristics of the vehicle" rather than defects. Warranty support is inconsistent: some repairs are denied despite no owner misuse, and owners continue making lease payments while vehicles sit non-operational for months. Honda's standard response is to wait for parts or software updates with no estimated arrival or loaner vehicle support.
Failure modes owners describe
Telematics Module / HondaLink App Failure
HondaLink app crashes or fails to activate, preventing access to vehicle features, charging controls, and EVGO credits. OnStar buttons malfunction, and GPS/Google Maps shows incorrect location or stops functioning entirely.
When: Within days to weeks of purchase; 113+ complaints; some failures resolved after 11+ days without vehicle use
Symptoms owners cite: HondaLink app won't activate; OnStar buttons non-functional; Google Maps shows wrong location or fails; GPS navigation stops working; Red OnStar indicator light
Repairs/costs cited: Telematics module replacement required; units on nationwide backorder for weeks to months. One owner made payments on leased vehicle for 11 days of actual use while waiting for part replacement.
Recalls/TSBs owners mention: Honda Support provides troubleshooting; escalates to 2nd tier or OnStar support; acknowledges telematics module defect and extends repair timelines. Some cases referred to OnStar for diagnosis.
High-Voltage Battery System Failures
Multiple warning messages appear—'Service High Voltage System,' 'Service Vehicle Soon,' 'Reduced Acceleration'—indicating battery or high-voltage system faults. Vehicles lose charging ability, experience sudden power loss, and require full battery replacement or extended repair.
When: Within days to months of purchase, as early as 79 miles on odometer; recurring issue in some vehicles after repairs; 40+ complaints reference this failure
Symptoms owners cite: Dashboard warnings: 'Service High Voltage System', 'Service Vehicle Soon', 'Reduced Acceleration - Drive With Care'; Vehicle will not charge or charge stops mid-cycle; Sudden shutdown while driving; AC system shuts down; Battery capacity drops unexpectedly (80% to 27%); Unable to shift into drive or reverse
Codes mentioned: P0534 (A/C Charge Low), Hybrid/Electric vehicle powertrain controller malfunction codes
Repairs/costs cited: Service bulletins exist for AC valve replacement (battery cooling system). Technicians report AC pressure valves, A/C refrigerant lines, and battery sensors are swapped or defective at assembly. One owner reported valve/hose design flaw on national backorder; another was told hose is 'badly designed' and being redesigned. Battery replacement requires 3+ weeks lead time. Multiple owners report issue recurs after dealer 'resets' or claims no problem found.
Recalls/TSBs owners mention: Honda acknowledges AC and battery issues as assembly defects; service bulletins issued for valve replacement. Extended repairs (2–8 weeks) due to parts backorders. Some dealerships clear codes without fixing root cause. One owner reports being told 'nothing wrong' after Honda engineers reviewed case.
Charging System Malfunctions
Charging port refuses to accept charge, charge stops prematurely at low percentages, or charges to 100% despite preset limits. Charging couplers show burn marks and electrical damage in some cases.
When: Within 2–10 months of purchase; under 6,000–10,000 miles; recurring in same vehicles
Symptoms owners cite: Vehicle will not charge at public or home charging stations; Charge stops mid-cycle (e.g., 3–4% progress) and shuts off; Charging coupler shows burn marks and electrical damage; Vehicle charge limit set to 40% or lower cannot be increased; Charging stops at 91% regardless of user input; 'Unable to Charge' message displayed; Charge port door sensor alerts that won't clear
Repairs/costs cited: Charging coupler/receptacle replacement required in some cases. One owner denied warranty coverage despite no accidents or misuse. Parts include AC pressure valves, charging port sensors, and potentially high-voltage battery charger receptacle.
Recalls/TSBs owners mention: Dealers recommend parts replacement but cite backorders and lack of ETA. Warranty coverage denied in at least one case of charging port burn damage. Some dealers blame charge port door position sensor, though owners report AC/battery issues are actual cause.
Instrument Cluster and Infotainment Screen Blackouts
Both the driver instrument panel and center infotainment screen go completely blank while driving, removing access to speed, warning lights, climate controls, and navigation. Screens may come back on after 10 minutes to 2.5 hours of sitting, or after restart cycles.
When: Random occurrences during normal driving; one owner experienced issue at 180 miles, another at ~20,000 miles; multiple reports after recent software updates
Symptoms owners cite: Both screens go black while driving; No speed indication visible; No access to headlight, fog light, or climate controls; Navigation and maps unavailable; Backup camera unavailable; No audio output; Screens return to normal after restart or extended sitting (10 min–2.5 hrs); No warning lights precede failure
Repairs/costs cited: One dealership diagnosed defective audio control unit after 65 days; unit was replaced. Dealers report inability to reproduce the issue. Software updates have preceded some failures. Heads-up display also affected in some cases.
Recalls/TSBs owners mention: Honda Tech Support identified audio control unit as defective in one case and authorized replacement. One dealer confirmed 'others have had this happen' but labeled it 'rare.' Honda informed one dealer the car was safe to operate without screens, which owner disputes.
Brake System Faults and Unexpected Braking
Brakes fail suddenly while driving, or vehicle applies brakes unexpectedly with no hazard present. One owner experienced complete brake failure at highway speed and jumped from moving vehicle. Automatic emergency braking engages during normal parking, backing, or driving situations.
When: Throughout ownership; emergency brake failure reported early in ownership; unwanted braking incidents ongoing
Symptoms owners cite: Complete brake failure at highway speed (70+ mph); Brakes unresponsive to pedal pressure; Automatic emergency braking engages while reversing with no obstacle; Automatic emergency braking engages while driving with no hazard in sight; Sudden hard braking during normal driving; Vehicle 'slams on brakes' going forward with no visible hazard; Intermittent braking when backing out of parking space in rain
Repairs/costs cited: One dealership suggested turning off the safety system as a 'fix.' Another owner experienced brake failure at 25 mph and was told to disable the safety feature. No structural repairs mentioned.
Recalls/TSBs owners mention: Dealerships report inability to replicate braking issues during diagnostics. One dealer suggested disabling the safety system entirely, which owner reports as 'criminal.' Honda advised another owner there is no safety issue with unexpected brake activation.
Turn Signal Logic Error
After completing a right turn, the left turn signal briefly activates for three blinks without driver input, as if the steering wheel was momentarily pressed left. Dealer confirmed issue occurs on other Prologue vehicles in stock.
When: Occurs approximately one in five right-turn completions
Symptoms owners cite: Right turn signal automatically cancels as expected; Left turn signal then auto-activates for three blinks with no driver input; Caused confusion in other drivers, leading to near-miss collision
Repairs/costs cited: No repair attempted. Dealer characterized as 'characteristic of vehicle.'
Recalls/TSBs owners mention: Dealership confirmed issue replicable on other stock Prolouges; concluded 'no problem found' and 'characteristic of vehicle.' American Honda confirmed issue is not considered a safety concern and is a known characteristic.
Forward Collision Warning System Malfunction
Forward collision warning system activates repeatedly without any vehicle or hazard present. System beeps continuously even while vehicle and all surroundings are stationary. Occurs dozens of times over short ownership period.
When: Throughout ownership; one owner reported ~50 occurrences over 7,500 miles within first few months
Symptoms owners cite: Forward collision warning beeps while stationary at traffic light; Forward collision warning activates with no vehicles or obstacles ahead; Beeping continues until vehicle placed in park; System remains unavailable or displays 'Forward Collision System Unavailable' in clear conditions
Repairs/costs cited: Sensors (rear-view mirror and bumper-mounted) cleaned by owner with no effect. One owner noted correlation with reduced acceleration warnings but no repair completed.
AC System Failure and Refrigerant Issues
AC system shuts down or stops functioning, often coinciding with 'Service High Voltage System' warnings. Technicians report defective AC valves, swapped battery sensors and AC sensors, and poorly designed hoses that leak refrigerant.
When: Within weeks to months of purchase; recurring in same vehicles after repairs
Symptoms owners cite: AC inoperative after high-voltage system warnings appear; AC shuts down during highway driving; Insufficient heating in winter (40 minutes to feel warmth)
Repairs/costs cited: AC pressure valve replacement required; one service bulletin references this repair. A/C sensors and battery sensors found swapped at assembly in some vehicles. One technician reported hose design flaw and leak requiring redesign; part on national backorder.
Recalls/TSBs owners mention: Honda acknowledges AC valve defects via service bulletins. Confirms assembly errors (swapped sensors, valve defects). Estimates for parts arrive weeks to months out; some parts still in redesign phase.
HondaLink App and Connectivity Crashes
HondaLink and related connectivity features crash or become unstable, preventing app access and causing random vehicle setting changes (lights, locks, windows). Wireless CarPlay and wired CarPlay both fail intermittently.
When: Within days to months of purchase; recurring after initial resolution
Symptoms owners cite: HondaLink app crashes repeatedly; Vehicle randomly changes light settings, window/door locks; CarPlay (wired and wireless) drops phones or stops connecting; App crashes again shortly after being fixed; Critical updates sent through app become inaccessible
Repairs/costs cited: Software updates or app resets attempted by Honda Support. One owner reported issue resolved on 12/13/2024 only to crash again immediately.
Recalls/TSBs owners mention: Honda Support provides extended troubleshooting (3.5 months reported) with inconsistent responses. Software updates attempted. Issue resolved temporarily but recurred.
Recall Update Failure (Software/Firmware)
Recall software updates fail repeatedly at dealership level. Updates incomplete or 'bricked' the vehicle, requiring hardware replacement. Dealerships lack expertise in USB-based update procedures.
When: During recall attempt (NHTSA recall 26V-112); multiple visit failures reported
Symptoms owners cite: Recall update fails 3 out of 4 attempts at dealership; Only partial update completed on 4th attempt; Dealership states remaining updates will cost extra; Software update 'bricked' vehicle, requiring new radio module ordered (6-week lead time)
Repairs/costs cited: Radio module replacement and full software update required. One dealership had minimal experience with USB-based updates despite being authorized recall facility.
Recalls/TSBs owners mention: Honda corporate acknowledged recall issue but told owner to go to another dealer. No centralized resolution mechanism for failed recall updates.
Driver Assistance System Failures
Lane assist, object/collision warning, and radar sensor functions fail or malfunction. Multiple diagnostic faults detected involving brake control, radar sensors, and image processing.
When: Post-purchase, before and after crash incident; ongoing
Symptoms owners cite: Lane assist failure during expected operation; Object/collision warning did not activate during hazard; Multiple fault codes for brake control, radar sensors, and image processing systems; Recurring braking/driver assistance concerns after incident
Codes mentioned: Brake control system faults, Radar sensor faults, Image processing faults, Communication system faults
Repairs/costs cited: Diagnostic pre-scan identified multiple faults post-incident; repairs status unclear. Underhood insulation damage noted prior to incident.
Backup Camera and Night Vision Defect
Backup camera lacks night vision capability in Elite models, rendering it unusable in dark conditions unless brake is pressed. Lower-tier models reportedly have full night visibility.
When: Present at purchase; design limitation across all Elite model units
Symptoms owners cite: Backup camera shows nothing in darkness/nighttime; Visibility only available when brake is applied; Lower trim models have superior night vision
Repairs/costs cited: No repair available; reported as design characteristic by dealership.
Recalls/TSBs owners mention: Dealership referred issue to Honda manufacturer; no response from Honda regarding design discrepancy.
Excessive Battery Drain
Battery loses charge rapidly during normal driving at legal speeds, causing reduced range and frequent charging needs.
When: Ongoing throughout ownership
Symptoms owners cite: Battery drains quickly even at speed limit or below; Reduced advertised range in real-world use
Charging Port Door Sensor Malfunction
Charge port door position sensor triggers repeated 'door open' alerts even when door is closed and remains closed. New alert cascades to 'Service High Voltage System' warning.
When: Weeks to months into ownership
Symptoms owners cite: Alert states charge port door is open when it is closed; Alert persists despite repeated opening/closing of door; New alert appears: 'Service High Voltage Charging System'; Alerts alternate or appear before/after each other
Repairs/costs cited: Dealership claims internal position sensor is issue but refuses warranty coverage. Owner reports other owners found actual issue was AC or battery despite dealership diagnosis.
Recalls/TSBs owners mention: Dealership refused warranty repair claiming position sensor cause; owner reports dealership may be misdiagnosing actual AC/battery root cause.
Infotainment Software Instability and Navigation Errors
Navigation system stops functioning, displays incorrect vehicle location (e.g., showing car in Mexico when in Virginia), and system glitches prevent proper display of maps and charging history.
When: Days to weeks after purchase; recurring
Symptoms owners cite: Google Maps stops functioning; Maps display shows incorrect location (e.g., Mexico instead of Virginia); Navigation system displays car location as last charging spot instead of actual location; System glitches during setup and use
Repairs/costs cited: Telematics module replacement or software troubleshooting attempted.
Recalls/TSBs owners mention: Honda Support provides basic troubleshooting; escalates to 2nd tier support with delays. OnStar support involved; suggests telematics module replacement.
Audio System and Speaker Defects
Radio audio drops after extended vehicle operation; one incident of full-volume static/noise on startup that was dangerously loud and potentially damaging to hearing.
When: One incident after service appointment for braking issue; one incident on startup
Symptoms owners cite: Radio remains on 1–2 minutes after vehicle shutdown; Sound system 'blew out' during service diagnostics; Extremely loud static noise on startup (full volume); Static noise continues with any vehicle operation sound; Audio cuts out after extended use
Repairs/costs cited: Sound system replaced (owner waited additional week for replacement); audio control unit diagnosed as defective in one case.
Sunroof Operation Failure
Panoramic sunroof fails to close fully; reopens just before complete closure, requiring multiple attempts to shut.
When: Within first two months of ownership
Symptoms owners cite: Sunroof opens back up when nearly closed; Multiple button presses required to achieve full closure
Power Door/Window Lock Function Failures
Door lock status indicator fails to display on instrument panel intermittently. Window and door locks change state unexpectedly during normal operation.
When: Throughout ownership; intermittent
Symptoms owners cite: Instrument panel lock status display fails intermittently; Vehicle door locks engage/disengage without user input; Power window controls malfunction
Steering Column/Front-End Clicking Sound
Clicking noise emanates from front end of vehicle when turning steering wheel, progressively worsens over time.
When: Throughout ownership; worsens progressively
Symptoms owners cite: Clicking sound from front end during turns; Noise intensity increases over time
Repairs/costs cited: Vehicle taken to dealer; diagnostic results not recalled by owner; vehicle not repaired.
Hands-Free Door Access (Keyless Entry) Malfunction
Hands-free access feature works only intermittently and unreliably.
When: Throughout ownership
Symptoms owners cite: Hands-free sensor does not activate consistently; Feature works only randomly
Repairs/costs cited: Dealership claims all cars have same issue and no repair is available.
Recalls/TSBs owners mention: Dealership stated issue is universal across fleet and cannot be repaired.
Vehicle Shutdown While Driving
Engine/propulsion system shuts down or becomes unresponsive while vehicle is in motion. Driver loses control of transmission and parking brake.
When: Around 20,000 miles
Symptoms owners cite: Vehicle shuts down while driving at low speed; Unable to shift into or out of park; Unable to engage parking brake; Vehicle remains stuck for ~1 minute before restart possible
Repairs/costs cited: Owner drove to dealership for diagnostics; results pending.
Charge Limit Control Malfunction
Vehicle charge limit setting does not function properly; system either ignores user-set limits and charges to 100%, or locks limit at low percentage (40%) and cannot be increased.
When: Throughout ownership; persistent across power cycles
Symptoms owners cite: Charge limit set to lower percentage (e.g., 80%) but vehicle charges to 100% 70% of the time; Charge limit locked at 40% and cannot be adjusted via app or vehicle controls; User must monitor charging manually to prevent overcharge
Repairs/costs cited: Dealership unable to locate or fix issue.
Shift Condition Error / Transmission Lock
Vehicle displays error message 'Conditions not meet' and refuses to shift into drive or reverse. May occur alongside reduced acceleration warnings.
When: Throughout ownership; recurring
Symptoms owners cite: Error message 'Conditions not meet' appears on dashboard; Vehicle will not shift into drive or reverse; Error occurs randomly while driving; Eventually clears on its own or after restart
Repairs/costs cited: Dealership clears codes but cannot identify root cause; unable to duplicate during service.
Synthesized from 118 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 5 most recent
I turned my car on and the screens were on, I put it in drive and both screens went black, I pulled over and I restarted the car multiple times, nothing would come on. I had to drive one hour to work without being able to see how fast I was going, or how many miles. It was completely dark and this is a serious safety issue.
This car presenta High Voltage Issue, I bring the car to the services 3 times. AND i see online a lot of people with the same problem
Main screen that operates the vehicle shuts off periodically and will not return on. Upon restart multiple times the screen will partially open and appear on but touch screen features does not work. This prevents the driver from accessing the radio, turn lights on, turn fog lights on off, change charge settings, and accessing all vehicle safety and non-safety related items. Car does still…
Went to start vehicle and warning light was present on main screen signaling HIGH VOLTAGE SYSTEM ERROR. I called the local Honda service team who had me check to see if the car would charge. The tech said n the phone was concerned that the battery could be “bricked” meaning in non-operational status. The car did indeed charge and drove it immediately down to service adviser per his…
About 30 miles after starting a 1,500-mile road trip, the infotainment screen and driver instrument panel both went completely blank. After about 60 seconds, the system apparently rebooted, restoring both screens to normal operation. However, during that minute I was driving at approximately 75 mph on Interstate 90, and I had no access to certain vehicle controls and no way to verify my speed or…
Had electrical 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 electrical problem on the 2024 Honda Prologue?
It's a documented issue but not catastrophic. 118 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Based on the 118 complaints filed, electrical issues most often appear around 10,479 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 $850 for electrical 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 electrical?
No active recalls currently cover electrical 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.