Frequently Asked Questions

How much does a check engine light diagnostic cost for a 2023 Lexus IS 500?

• Typical diagnostic fees range from about $95 to $150 for an initial scan and inspection; more extensive testing can run higher depending on parts and labor.
• At Nalley Lexus Smyrna we often cost less than independent shops while providing factory-trained technicians and genuine Lexus parts, delivering immediate and long-term savings through correct, lasting repairs.
• Diagnostics are frequently credited toward repair costs if you choose our dealership for the work, reducing out-of-pocket expense.
• Any repairs covered under warranty must be performed at a certified dealership to preserve coverage and ensure proper service.

What does it mean when the check engine light comes on in a 2023 Lexus IS 500?

• It indicates the vehicle’s onboard diagnostics detected a fault in the emissions, engine, transmission, or related systems and stored an OBD-II code.
• Codes range from minor issues like a loose gas cap to serious problems such as misfires or catalytic converter faults.
• Severity varies: some faults demand immediate attention while others allow limited driving; a diagnostic scan reveals the exact code and recommended action.
• Bringing your vehicle to Nalley Lexus Smyrna ensures accurate diagnosis by factory-trained technicians, preserving warranty eligibility and often saving you money long-term.

What is the most common reason for check engine light on a 2023 Lexus IS 500?

• The most frequent cause is a loose or faulty gas cap, which triggers an EVAP system code and is simple to correct.
• Other common causes include oxygen sensor failure, catalytic converter inefficiency, and ignition misfires.
• Addressing issues promptly at a certified dealership prevents escalation and higher repair costs over time.
• Our team at Nalley Lexus Smyrna can inspect, diagnose, and repair efficiently, often at a lower overall cost than independent shops when factoring warranty protection and correct parts.

How long does a check engine light service take?

• An initial diagnostic scan and visual inspection typically take one to two hours depending on workshop load and vehicle condition.
• If parts or deeper testing are required, total repair time can extend from a few hours to a day or more; we will provide a clear estimate before work begins.
• Nalley Lexus Smyrna prioritizes efficient scheduling and transparent timelines; repairs performed here often prevent repeat visits and additional costs down the road.
• Warranty-covered repairs must be completed at a certified dealership to ensure full coverage and long-term savings.

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

• Start with simple checks: ensure the gas cap is tight and undamaged, verify fluid levels, and look for obvious signs like loose hoses or smoke.
• If the light remains on after these checks, schedule a diagnostic scan; do not ignore persistent illumination or unusual noises.
• For flashing lights or severe symptoms, stop driving and have the vehicle towed to Nalley Lexus Smyrna to prevent further damage.
• Using our dealership for diagnosis and repair protects your warranty and often yields better long-term value versus piecemeal, independent fixes.