Frequently Asked Questions

What is the most common reason for check engine light on a 2025 Toyota Sequoia?

• Common causes include ignition misfires, faulty oxygen sensors, catalytic converter issues, or fuel delivery problems.
• Misfires (spark plugs, coils, injectors) are especially common and can cause poor fuel economy and rough running.
• Left unaddressed, these faults can escalate to expensive repairs such as catalytic converter replacement.
• Toyota of Greenville uses factory-trained technicians to diagnose root causes quickly and often at lower immediate and long-term cost than independent shops.

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

• It signals that the vehicle’s onboard diagnostics detected a fault in emissions, engine, or powertrain systems.
• The light can indicate anything from a loose gas cap to a serious misfire or sensor failure.
• Our technicians retrieve diagnostic trouble codes (DTCs) and freeze-frame data to pinpoint the issue accurately.
• Repairs covered under warranty must be performed at a certified dealership to remain valid; this protects long-term ownership costs.

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

• Verify the gas cap is tight—an unsecured cap is a common, simple cause for an engine light.
• Note driveability: are there misfires, loss of power, or unusual noises? That helps prioritize immediate attention.
• If symptoms are present, schedule diagnostics at Toyota of Greenville; diagnosing early often avoids costlier repairs later.
• For warranty-covered issues, make sure service is performed at a certified dealership to preserve coverage and savings.

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

• Diagnostic fees typically range from about $90 to $150, depending on the depth of testing required to identify the cause.
• Toyota of Greenville often costs less than independent shops overall because our accurate diagnostics and OEM repairs prevent repeat visits and cascading failures.
• We provide transparent estimates for needed repairs and explain immediate and long-term savings from using OEM parts and factory-trained technicians.
• Remember: repairs covered under warranty must be completed at a certified dealership to keep warranty protection in force.

How long does a check engine light service take?

• Simple diagnostics may take 30–60 minutes; more involved inspections and repairs can take several hours or a day depending on parts and tests.
• Toyota of Greenville prioritizes accurate diagnosis to avoid unnecessary parts replacement and future visits, saving time and money.
• If a repair is needed, we provide clear timelines and use OEM parts to ensure reliability and warranty compliance.
• For urgent issues—like misfires or flashing lights—we recommend immediate service to limit damage and long-term expense.