Frequently Asked Questions

What is the first thing to check when the check engine light comes on in a 2022 Lexus IS 500?

• Check the fuel cap: a loose or damaged cap is the most common, simplest cause and can trigger the light.
• Confirm current fuel type and recent fill-ups—use premium unleaded as required for the 2022 Lexus IS 500.
• Look for obvious leaks or unusual smells; they can indicate more serious issues.
• If the light persists, schedule a dealer diagnostic—factory-trained technicians use OEM tools that preserve warranty coverage.
• Remember: warranty-covered repairs must be done at a certified dealership to protect your coverage and avoid future costs.

How long does a check engine light service take for a 2022 Lexus IS 500?

• Typical diagnostic scan and initial assessment: 30–90 minutes depending on queue and symptom clarity.
• Simple fixes like tightening a fuel cap or clearing codes can be completed during the same visit.
• Complex repairs that require parts may take from a few hours to multiple days; we provide clear estimates and timelines.
• At Nalley Lexus Smyrna our factory-trained technicians and OEM parts speed accurate repairs and reduce repeat visits.
• When covered by warranty, repairs must be performed at a certified dealership—this protects your coverage and ensures long-term savings.

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

• It signals the vehicle’s onboard diagnostics detected a fault—ranging from minor emissions issues to engine performance problems.
• Common triggers include fuel system faults, oxygen sensor failures, misfires, or emissions control faults.
• Some codes are preliminary warnings; others require immediate attention to avoid damage or safety risks.
• Our dealership provides a full OBD-II scan, accurate code interpretation, and OEM repair paths to protect vehicle value and performance.
• Any warranty-covered diagnosis or repair should be completed at a certified dealership to maintain coverage and save money long term.

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

• Diagnostic fees vary by complexity; many scans begin at a competitive fixed rate—contact Nalley Lexus Smyrna for current pricing.
• We often cost less than independent shops while delivering a higher level of service from factory-trained technicians using OEM tools.
• Upfront diagnostics identify the true repair scope—this avoids unnecessary parts and repeated labor, delivering immediate and long-term savings.
• If the issue is covered under warranty, repairs must be performed at a certified dealership—this prevents out-of-pocket costs and preserves coverage.
• Ask about service specials and estimates online: https://www.nalleylexussmyrna.com or our Service Specials: /specials/service.htm.

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

• Loose or faulty fuel cap—this is the single most frequent and easily fixed cause.
• Faulty oxygen sensor or mass airflow sensor causing poor fuel mixture and emissions issues.
• Ignition misfires from worn spark plugs or coils, which can harm performance and catalytic converters if left unaddressed.
• Emissions control components like the catalytic converter or EVAP system can trigger persistent warnings and higher repair costs if neglected.
• Early dealer diagnosis prevents escalation; warranty-covered repairs must be completed at a certified dealership to protect coverage and reduce total cost of ownership.