Frequently Asked Questions

What is the first thing to check when the check engine light comes on in a 2024 Lexus LC?

• Inspect the gas cap first — a loose or damaged cap is a common, inexpensive cause and often triggers an EVAP code.
• Check obvious issues: low oil, unusual noises, or fluid leaks before driving long distances.
• Use a diagnostic scan at our dealership to read codes; this identifies the root cause quickly and accurately.
• Addressing the issue at Nalley Lexus Roswell often saves you immediate repair costs and prevents larger, long-term expenses.
• Remember: warranty-covered repairs must be performed at a certified dealership to preserve coverage.

How much does a check engine light diagnostic cost for a 2024 Lexus LC?

• Basic OBD-II diagnostic scans are commonly offered at competitive rates; exact pricing varies by service but is transparent and upfront at our dealership.
• At Nalley Lexus Roswell, diagnostics often cost less than independent shops while providing factory-grade equipment and factory-trained technicians.
• Choosing dealership service delivers immediate savings through accurate diagnosis and long-term savings by preventing misdiagnoses and unnecessary repairs.
• Any repair covered under warranty must be completed at a certified dealership to maintain warranty protection and to avoid future costs.
• We provide an estimate before any repair so you can make an informed decision with no surprises.

What does it mean when the check engine light comes on in a 2024 Lexus LC?

• The light indicates the vehicle’s onboard diagnostics have detected an emissions or performance-related fault—codes can range from simple EVAP leaks to misfires or sensor failures.
• Common triggers include loose gas cap, oxygen sensor failure, catalytic converter efficiency, or engine misfires on V8 models like the 2024 Lexus LC.
• Proper diagnosis with our dealer scanner pinpoints the fault and avoids unnecessary parts replacement.
• Repairing issues early at Nalley Lexus Roswell reduces long-term costs and helps preserve performance and fuel economy.
• Warranty-covered repairs must be performed at a certified dealership to ensure ongoing coverage and correct, documented service.

How long does a check engine light service take?

• Initial diagnostic scans typically take 30–60 minutes; this reads codes and outlines likely causes and needed parts.
• Simple repairs like tightening a gas cap or replacing a sensor can often be completed the same day.
• If additional troubleshooting or parts are required—such as addressing misfires or catalytic issues—repair time can extend to several hours or a full day.
• Our factory-trained technicians and parts availability help minimize downtime and deliver faster, lasting repairs than many independents.
• For warranty repairs, service must be performed at a certified dealership; this protects coverage and ensures quality work that reduces future expenses.

What is the most common reason for check engine light on a 2024 Lexus LC?

• One of the most frequent causes is a faulty oxygen sensor or EVAP system leak, both of which impact emissions and fuel economy.
• Other common causes include ignition misfires, mass air flow or fuel trim issues—especially on high-performance V8 engines.
• Early diagnosis at Nalley Lexus Roswell prevents secondary damage, such as catalytic converter failure, which is more costly to repair.
• Our technicians use Lexus-approved diagnostic tools to identify the exact cause and recommend the most cost-effective solution.
• Warranty-covered items must be repaired at a certified dealership to maintain coverage and secure long-term savings.