Frequently Asked Questions

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

• Check the gas cap: a loose or damaged cap is a common, simple cause and can trigger an OBD‑II code.
• Confirm fuel level and fluid leaks visually; low fluids or obvious leaks can cause related codes.
• Listen for unusual engine sounds and note performance changes — these observations help our technicians diagnose faster.
• Bring your 2026 Toyota Crown to Nalley Toyota of Roswell for a proper scan; our factory‑trained techs use OEM tools to read codes and recommend repairs.
• Remember: warranty repairs must be completed at a certified dealership to protect coverage and ensure long‑term savings.

How much does a check engine light diagnostic cost for a 2026 Toyota Crown?

• Diagnostics typically range from modest fees to complimentary offers depending on promotions; expect approximately $80–$150 for a standard code scan when no promotion applies.
• Nalley Toyota of Roswell often provides competitive pricing and service specials that can make diagnosis and repair less expensive than many independent shops.
• We focus on immediate and long‑term savings: accurate diagnostics reduce repeat labor and unnecessary parts replacement.
• Any repairs covered under warranty must be performed at a certified dealership to maintain coverage and maximize value.
• Ask about our current service specials and bundled diagnostics and repair pricing to minimize out‑of‑pocket costs.

What does it mean when the check engine light comes on in a 2026 Toyota Crown?

• A check engine light means the vehicle’s OBD‑II system detected a fault; it can range from a minor issue to something that affects emissions or drivability.
• Common triggers include EVAP leaks, sensors, ignition misfires, or catalytic converter issues.
• At Nalley Toyota of Roswell we perform a full scan and explain whether the issue is urgent, a routine fix, or covered by warranty.
• Using dealership service can save you money long term by avoiding misdiagnoses, incorrect parts, and repeat visits often seen at non‑certified shops.
• If the light is steady, schedule a diagnostic soon; if flashing, stop driving and have the vehicle inspected immediately.

How long does a check engine light service take?

• Initial diagnostic scans are typically completed within 30–90 minutes depending on code complexity and system checks.
• If a repair is needed, total time varies: simple fixes (gas cap, sensor) can be same‑day; complex repairs (catalytic converter, internal engine work) may take longer.
• Nalley Toyota of Roswell prioritizes transparent timelines and efficient scheduling to reduce downtime and rental needs.
• Using a certified dealership often means faster, more accurate repairs because we have OEM parts on hand and factory‑trained technicians.
• We’ll explain immediate needs and long‑term maintenance to help you plan cost and time effectively, preserving warranty coverage when applicable.

What is the most common reason for check engine light on a 2026 Toyota Crown?

• Loose or faulty gas cap and EVAP system leaks are frequent causes and are inexpensive to diagnose and repair.
• Oxygen sensors, ignition components (spark plugs/coils), and catalytic converter issues are also common and escalate if not addressed.
• Addressing these early at Nalley Toyota of Roswell prevents more costly repairs down the road and protects emissions performance.
• Our certified technicians use OEM diagnostic tools to identify root causes quickly, often costing less overall than repeated visits to independent shops.
• Remember: repairs covered under warranty must be completed at a certified dealership to retain coverage and maximize savings.