Frequently Asked Questions

What is the first thing to check when the check engine light comes on in a 2023 Lexus LC 500?

• Check the gas cap: a loose or damaged cap is a common cause and is quick to fix.
• Look for obvious issues: low oil, visible leaks, or disconnected hoses under the hood.
• Note symptoms: reduced power, strange noises, or smells and share these with our technicians.
• If the light is flashing, stop driving and schedule immediate service with a certified dealer to avoid engine damage.
• Remember: warranty-covered repairs must be completed at a certified dealership to preserve coverage and long-term value.

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

• Diagnostics at Nalley Lexus Smyrna are competitively priced and often cost less than independent shops, while delivering factory-level service.
• A standard scan fee covers trouble-code reading and technician evaluation; any recommended repairs are quoted up front.
• Choosing the dealership delivers immediate savings through accurate diagnostics and long-term savings via correct repairs and genuine parts.
• Warranty repairs must be performed at a certified dealer to remain valid; our factory-trained technicians ensure compliance and quality.
• Schedule online or visit our service specials page for possible offers and transparent pricing details.

How long does a check engine light service take?

• Typical diagnostic scans are completed within 30–60 minutes; more complex issues may require additional inspection time.
• Minor repairs (gas cap, sensor replacement) can often be completed the same day when parts are in stock.
• For complex repairs we provide a clear time estimate and keep you updated throughout the process.
• Our factory-trained technicians and OEM parts streamline repairs, reducing return visits and long-term downtime.
• Use our online scheduler to secure a fast appointment and avoid extended wait times at independent shops.

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

• Faulty oxygen sensors and catalytic converter issues are frequent causes that affect emissions and performance.
• Loose or damaged gas caps often trigger codes related to evaporative emissions systems.
• Ignition or fuel system misfires (spark plugs, coils, injectors) can illuminate the light and reduce efficiency.
• Prompt dealer diagnostics prevent minor issues from escalating into costly repairs and ensure warranty coverage when applicable.
• Our technicians identify root causes quickly using Lexus-grade tools, protecting performance and resale value.

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

• It signals the vehicle’s onboard diagnostics detected a fault in emissions, ignition, fuel, or engine management systems.
• Codes range from minor (loose cap, sensor drift) to serious (misfires, catalytic damage) and require proper scanning.
• A steady light usually indicates a non-emergency issue; a flashing light denotes active misfires and immediate attention is needed.
• Timely dealer inspection prevents further damage and ensures any warranty-covered work is completed at a certified service center.
• Bring your vehicle to Nalley Lexus Smyrna for precise diagnostics, OEM parts, and factory-trained technicians for the best long-term outcome.