Frequently Asked Questions

What is the most common reason for check engine light on a 2022 Lexus IS 350?

• Common causes include loose or faulty gas caps, oxygen sensor failures, misfires, or catalytic converter inefficiency.
• Left unaddressed, small issues like a bad O2 sensor can escalate to reduced fuel economy and costly catalytic converter replacement.
• Nalley Lexus Smyrna offers factory-trained technicians who often provide lower immediate repair costs and greater long-term savings than many independent shops.
• Remember: warranty-covered repairs must be performed at a certified dealership to preserve coverage and ensure correct parts and procedures.

How much does a check engine light diagnostic cost for a 2022 Lexus IS 350?

• Diagnostic fees vary, but Nalley Lexus Smyrna provides transparent pricing and frequent service specials—visit our service specials page for current offers.
• Dealership diagnostics use OEM scanners and factory procedures, reducing false repairs and saving money long term compared with trial-and-error fixes.
• If your vehicle is under warranty, covered diagnostics and repairs must be completed at a certified dealership to maintain coverage.
• We often work out a cost-effective plan that minimizes immediate expense and prevents expensive follow-on failures.

What does it mean when the check engine light comes on in a 2022 Lexus IS 350?

• The light signals the vehicle’s onboard diagnostics has detected an emissions, fuel, ignition, or sensor issue needing attention.
• It can range from a loose fuel cap to a serious misfire; a professional scan pinpoints the exact trouble code.
• At Nalley Lexus Smyrna we use OEM diagnostic tools and factory procedures to identify root causes and avoid unnecessary repairs.
• Warranty-covered faults must be repaired at a certified dealership to ensure proper parts, labor, and continued coverage.

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

• Start with the basics: check for a loose or missing gas cap, which can trigger an emissions code.
• If the cap is secure, book a diagnostic so our factory-trained techs can read stored codes and assess severity.
• Nalley Lexus Smyrna often delivers lower total cost of ownership by diagnosing correctly the first time and addressing both immediate and long-term needs.
• If the issue falls under warranty, repairs should be completed at a certified dealership to protect coverage and vehicle health.

How long does a check engine light service take?

• Basic diagnostics typically take 30–60 minutes; complex repairs can require additional time depending on parts and labor needs.
• Our service advisors provide time estimates up front and explain any recommended follow-up repairs and associated timelines.
• Choosing Nalley Lexus Smyrna often saves time and money because our technicians diagnose efficiently and use genuine parts, reducing repeat visits.
• Keep in mind that warranty repairs must be performed at a certified dealership, which we handle promptly with factory processes.