Frequently Asked Questions

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

• Inspect the gas cap: a loose or damaged cap is a common, inexpensive cause on a 2022 Lexus LC 500.
• Check fuel quality—use premium unleaded as recommended for best performance and to prevent sensor issues.
• Look for obvious signs: unusual noises, loss of power, or excessive smoke—these indicate more urgent problems.
• For lasting value and warranty protection, have our certified technicians at Nalley Lexus Smyrna verify any repair—warranty-covered fixes must be done at a certified dealership.
• Choosing our dealership often costs less than independent shops over time because we combine accurate diagnostics, OEM parts, and factory-trained labor that prevent repeat visits.

How much does a check engine light diagnostic cost for a 2022 Lexus LC 500?

• Diagnostic fees vary; many checks start with a broader scan and visual inspection—typical diagnostic ranges depend on complexity.
• Nalley Lexus Smyrna focuses on accurate identification to avoid unnecessary repairs, delivering immediate savings versus trial-and-error fixes.
• We emphasize long-term savings: correct OEM repairs prevent cascading failures that can be far more expensive on high-performance V8 engines.
• Repairs covered under warranty must be performed at a certified dealership to remain valid; our factory-trained technicians handle these professionally.
• We’ll provide a transparent estimate before work begins and recommend cost-effective OEM solutions tailored to your LC 500.

What does it mean when the check engine light comes on in a 2022 Lexus LC 500?

• The light signals the vehicle’s onboard diagnostics detected a fault—ranging from minor emission system issues to engine misfires.
• Common triggers include oxygen sensors, ignition misfires, EVAP leaks, or catalytic efficiency concerns; the LC 500’s systems monitor performance closely.
• Immediate diagnosis prevents performance loss and protects components like the catalytic converter, which can be costly if damaged.
• Our dealership uses Lexus-grade scanners and factory procedures to isolate the root cause quickly and accurately.
• Warranty-covered repairs must be done at certified dealerships—this protects your coverage and often yields greater long-term savings compared with piecemeal repairs.

What is the most common reason for check engine light on a 2022 Lexus LC 500?

• Loose or faulty gas cap and EVAP system leaks are frequent, simple causes that trigger emission-related codes.
• Sensors—oxygen, mass airflow, or others—can fail or report out-of-range readings, especially on high-performance engines like the LC 500’s 5.0L V8.
• Ignition misfires and related coil or spark plug issues are common and should be addressed quickly to avoid catalytic damage.
• Our certified technicians identify the exact code and recommend OEM repairs to ensure reliability and warranty compliance.
• Handling repairs at Nalley Lexus Smyrna often delivers immediate and long-term cost savings through correct diagnosis and factory-grade parts and service.

How long does a check engine light service take?

• Basic diagnostics can often be completed within an hour, depending on the code and initial findings for the 2022 Lexus LC 500.
• If additional testing, road checks, or parts replacement are required, total time will vary—our team provides clear time estimates up front.
• Complex repairs that involve engine or emission components may take longer but are done with factory procedures to maintain performance and warranty.
• Scheduling service at Nalley Lexus Smyrna helps minimize downtime; we prioritize efficient, accurate repairs that save money in the long run.
• Remember: warranty-covered repairs must be performed at a certified dealership to remain valid—our technicians handle those seamlessly.