Larry H. Miller Honda Murray provides up-front pricing and vehicle-specific estimates for battery replacements.

Exact cost depends on whether you need the 12‑volt auxiliary battery or a high‑voltage traction pack. For most customers we start with a diagnostic to confirm which battery is required, then provide a written estimate. Electric vehicles can have higher-cost traction‑pack repairs; our service advisors will explain options and warranty coverage.

• We perform a full diagnostic before quoting a price
• Options include OEM replacement and verified remanufactured units when appropriate
• Ask for an up-front written estimate at Larry H. Miller Honda Murray

Most 12‑volt battery replacements at the dealership take under 60 minutes, while high‑voltage traction work typically requires several hours and scheduled appointment time.

Exact duration varies by service type: a quick 12‑V swap is fast, but traction‑pack removal, installation and software checks need additional time and safety procedures. We reserve dedicated bays and trained technicians for EV work to maintain OEM procedures and vehicle diagnostics.

• 12‑volt auxiliary swaps: usually under 1 hour
• Traction‑pack service: allow several hours and a scheduled appointment
• We perform post‑install software checks and a road test

The 2025 Honda Prologue uses both a high‑voltage traction battery for propulsion and a 12‑volt auxiliary battery for vehicle electronics.

The traction battery is a manufacturer‑specified high‑voltage pack sized for the vehicle's electric range; the 12‑V auxiliary battery is a conventional accessory battery located in the engine bay or under a trim panel depending on the model. For exact part numbers and OEM group size, we inspect the vehicle and confirm fitment.

• Traction pack: manufacturer‑specified high‑voltage system
• 12‑volt auxiliary: OEM replacement to match original spec
• We confirm exact part numbers and fitment during the diagnostic

12‑volt auxiliary batteries commonly last about 3–5 years; high‑voltage traction batteries typically last significantly longer but vary by usage and climate.

In the Salt Lake Valley, temperature swings and cold winters can accelerate wear on 12‑volt batteries; frequent short trips and extreme cold shorten life. The Prologue's traction battery is engineered for extended service life, but mileage, charging habits, and environment affect longevity.

• 12‑V auxiliary: commonly 3–5 years
• Traction battery: designed for many years of service; longevity varies by use
• Proper charging and routine checks help extend battery life

If your 12‑volt battery is over 4 years old, watch for slow cranking, dim lights, or dashboard battery warnings as common signs of failure.

Symptoms vary between the 12‑V auxiliary and the traction battery. For the auxiliary battery you may see slow accessory response or start failures; traction‑battery issues often present as range loss, charging errors, or system warnings. Bring the vehicle in for a diagnostic at the first sign to avoid being stranded.

• Slow accessory response or dim interior/exterior lights
• Dashboard battery or charging system warnings
• Unexpected range loss or charging faults (traction battery)

Dealer replacement includes full diagnostics, OEM parts, installation, system checks, and proper disposal — services often not included with a parts‑store battery purchase.

Independent shops or parts stores may sell and install batteries at lower parts cost, but dealer service covers OEM fitment, software updates, charging‑system verification and integration with the vehicle's battery management systems. That can be important for EV systems and warranty documentation.

• Dealer work includes OEM parts and trained technicians
• We perform diagnostics and charging/BMS checks not always done elsewhere
• Written estimate and documented service records for resale or warranty purposes

A failing 12‑volt battery can prevent the vehicle from powering up and leave you unable to drive; a depleted traction battery yields zero usable range.

If the 12‑volt battery cannot provide required accessory power, the Prologue may not complete start/ready procedures even if the traction battery has charge. For traction battery issues, expect reduced range or a no‑start condition. If you suspect battery failure, have the vehicle inspected before driving long distances.

• 12‑V failure can prevent vehicle from entering driveable state
• Traction battery faults can show as reduced range or charging errors
• Call or schedule a diagnostic to avoid being stranded

We perform a safety inspection and diagnostic, replace the battery with OEM‑specified parts, verify charging and BMS operation, then complete a functional road test.

Our technicians follow Honda procedures for electric vehicles: initial health scan, safe isolation of high‑voltage systems if required, installation of the correct OEM part, software or BMS checks, and a final verification drive. You receive an itemized invoice and service recommendations after completion.

• Diagnostic scan and battery health verification
• OEM‑spec installation, charging/BMS checks, and disposal
• Final road test and written service documentation

The 2025 Honda Prologue is an electric SUV with a published electric range of 283 miles and a typical full‑charge plug‑in time of 9.5 hours on standard AC charging. In Murray and the greater Salt Lake Valley — including Salt Lake City, Sandy, Millcreek, and West Jordan — temperature swings and winter cold can affect both 12‑volt and high‑voltage battery performance. We recommend seasonal checks and charging best practices to preserve usable range.

Larry H. Miller Honda Murray's service center handles routine battery diagnostics, 12‑volt auxiliary replacements, and coordination of OEM traction battery service as required. The Prologue's curb weight is 5,273 lb and towing capacity is 1,500 lb, so correct battery function is important for daily driving and occasional hauling. For an appointment, schedule service or call our Murray service department.

A typical Prologue battery replacement begins with a full diagnostic scan and battery health test to confirm whether the 12‑volt auxiliary or the high‑voltage traction battery is at issue. Technicians then isolate electrical systems, remove the failed component, install an OEM‑spec replacement, and update or verify battery management system settings. We complete a charging‑system check and a short road test to ensure normal operation.

You receive an itemized invoice and service recommendations after the job. We document the work in the vehicle record for resale or warranty support. To schedule this service use our service scheduler or review ongoing offers on our service specials.

The 2025 Honda Prologue pairs a high‑voltage traction battery sized to deliver a 283‑mile electric range with a conventional 12‑volt auxiliary battery for electronics. The Prologue's overall length is 192.0 inches, wheelbase 121.8 inches, overall width 78.3 inches and height 65.2 inches; those packaging dimensions affect service access points and battery location. Cargo capacity is 23.7 cu ft and EPA class is Standard Sport Utility Vehicles.

When a replacement is necessary, we match the OEM specification to preserve system performance and safety. Bring your 2025 Honda Prologue to Larry H. Miller Honda Murray in Murray for an OEM‑spec replacement — schedule service.