Frequently Asked Questions

What is the first thing to check when the check engine light comes on?

• Look for other dashboard warnings or messages—some systems will show a specific alert along with the check engine light.
• Confirm the vehicle is driving normally: unusual noises, loss of power, or leaks indicate higher urgency and you should stop driving.
• For the 2025 Toyota Mirai, check for obvious fuel‑fill or fueling port issues and ensure the vehicle was properly refueled; note any smell of fuel or hydrogen-like indicators and do not attempt repairs yourself.
• Document conditions (speed, load, temperature) and schedule dealer inspection—repairs covered under warranty must be done at a certified dealership to remain eligible.
• Contact Bill Estes Toyota for guidance; our factory-trained techs will advise whether immediate towing is required.

How much does a check engine light diagnostic cost for a 2025 Toyota Mirai?

• Diagnostic fees vary; a standard in-dealer diagnosis typically runs competitively and often costs less than independent shops when you factor in accurate diagnosis, genuine parts, and warranty protection.
• Simple code reads can be low-cost or complimentary during a service visit; more involved diagnostics that require road testing or specialized hydrogen system checks may cost more.
• Any repairs covered under warranty must be completed at a certified dealership—this preserves warranty rights and delivers long-term savings by preventing repeat failures.
• Bill Estes Toyota provides transparent estimates before work begins and explains immediate vs. long-term savings of dealer service.
• Contact our service team to get a current diagnostic price and to schedule prompt service at our IN location.

How long does a check engine light service take?

• Initial code reading and visual inspection often take 30–60 minutes; results vary with the complexity of the fault and whether test drives or pressure/hydrogen system checks are needed.
• Minor repairs such as sensor replacements or software updates can often be completed the same day.
• Major repairs involving fuel cell components or multi-part replacements may take longer depending on parts availability; our dealership stock and OEM parts access help reduce wait time.
• We prioritize accurate repairs to avoid repeat visits—this delivers immediate cost-effectiveness and long-term savings compared with short-term fixes.
• For precise timing, schedule a diagnostic appointment with Bill Estes Toyota so we can estimate service time for your 2025 Toyota Mirai.

What does it mean when the check engine light comes on in a 2025 Toyota Mirai?

• The check engine light signals that the vehicle’s onboard diagnostics found a fault—from a minor sensor issue to more serious powertrain or emission-system malfunctions.
• In the 2025 Toyota Mirai, common triggers include emissions or fuel cell control system alerts, sensors (oxygen, pressure, temperature), or electrified powertrain irregularities.
• Some faults are precautionary and don’t immediately affect drivability, while others require prompt attention to avoid damage to critical components or reduced range.
• Because hydrogen fuel-cell systems have unique safety and diagnostic needs, a certified dealership inspection is the safest route to correct identification and repair.
• Bring your Mirai to Bill Estes Toyota so factory-trained technicians can diagnose codes, explain repair options, and preserve warranty coverage.