Frequently Asked Questions

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

• Confirm the fuel cap is tight and intact — a loose or damaged cap is a frequent, simple cause.
• Look for obvious signs: low fluids, smoke, odd smells, or a dramatic loss of power.
• Check dashboard indicators for related warnings (e.g., low oil pressure, battery).
• If uncertainty remains, bring your vehicle to Nalley Toyota Stonecrest for a certified scan; warranty repairs must be done at a certified dealership to remain valid.

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

• Diagnostic fees typically range depending on complexity; most initial scans are in the modest range while in-depth diagnostics may cost more if extensive testing is required.
• Nalley Toyota Stonecrest often provides more value than independent shops — immediate savings on accurate diagnostics and long-term savings by preventing costly failures.
• Any repair covered under warranty must be completed at a certified dealership to preserve coverage and ensure factory parts and procedures.
• Ask about current service specials and diagnostic bundles at our service specials page for potential additional savings.

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

• The light signals that the vehicle’s onboard diagnostics has detected a fault in emissions, engine, or related systems.
• Conditions range from minor (evap leak, loose cap) to serious (misfire, catalytic converter issue) — code reading pinpoints the system involved.
• Prompt diagnostics at Nalley Toyota Stonecrest help avoid progressive damage and save money over time; certified technicians use factory tools for accurate results.
• Remember warranty repairs must be performed at a certified dealership to keep coverage intact and ensure genuine parts are used.

How long does a check engine light service take?

• Basic code reading and initial inspection often takes 30–60 minutes, depending on shop volume and the vehicle’s symptoms.
• If repairs are required, time varies from brief fixes (tighten a fuel cap, replace a sensor) to multi-hour repairs for deeper issues.
• Nalley Toyota Stonecrest prioritizes accurate, efficient service; factory-trained technicians often diagnose faster and reduce repeat visits, delivering immediate and long-term savings.
• For warranty-covered repairs, work must be done at a certified dealership to ensure coverage and proper documentation.

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

• Common causes include a loose fuel cap, faulty oxygen sensor, failing catalytic converter, ignition misfires, and EVAP system leaks.
• Many of these start small but can escalate into expensive repairs if ignored; early detection reduces parts and labor costs over time.
• Nalley Toyota Stonecrest delivers factory-level diagnostics and repair, often costing less overall than independent shops because we prevent repeat failures and use correct factory procedures.
• Warranty-covered issues must be repaired at a certified dealership to maintain protection and ensure genuine Toyota parts.