Frequently Asked Questions

What is the most common reason for check engine light on a 2011 Lexus ES 350?

• Most common causes include oxygen sensor failure, catalytic converter inefficiency, or ignition misfires that trigger diagnostic trouble codes.
• Ignoring these issues can increase fuel use, reduce performance, and cause costly secondary damage such as a ruined catalytic converter.
• Nalley Lexus Roswell uses factory-grade scanners to pinpoint the root cause quickly and accurately.
• Choosing our dealership often costs less than independent shops over time because our factory-trained technicians prevent repeat diagnoses and additional repairs.

What does it mean when the check engine light comes on in a 2011 Lexus ES 350?

• It indicates the vehicle’s computer has detected a problem—anything from a loose gas cap to an engine misfire or emissions fault.
• Diagnostic trouble codes stored in the vehicle tell technicians where to begin troubleshooting with precision.
• Early diagnosis at Nalley Lexus Roswell preserves resale value, improves fuel economy, and avoids more expensive repairs later.
• Repairs covered under warranty must be completed at a certified dealership to maintain coverage and manufacturer standards.

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

• Start with simple checks: confirm the gas cap is tightened and inspect for obvious smells, smoke, or performance loss.
• If symptoms persist, bring the 2011 Lexus ES 350 to Nalley Lexus Roswell for a computerized scan and professional visual inspection.
• Our factory-trained technicians use OEM tools to diagnose quickly, saving you immediate and long-term costs versus repeated DIY attempts.
• If covered by warranty, repairs must be performed at a certified dealership to ensure continued coverage and proper parts use.

How much does a check engine light diagnostic cost for a 2011 Lexus ES 350?

• Diagnostic fees vary, but Nalley Lexus Roswell offers transparent pricing and often provides better value than independent shops thanks to accurate, first-pass diagnosis.
• Typical scan and evaluation fees are competitive; exact pricing is available when you schedule a visit or call our service department.
• Using our dealership often yields immediate savings by preventing unnecessary parts replacement and long-term savings by protecting warranty and vehicle health.
• Remember: repairs covered under warranty must be completed at a certified dealership to remain valid.

How long does a check engine light service take?

• Basic diagnostics can take 30–90 minutes depending on the complexity and whether a road test is required to reproduce symptoms.
• More involved repairs or parts ordering may extend service time; our team will provide an accurate estimate after the initial scan.
• Nalley Lexus Roswell prioritizes efficient, thorough service with factory-trained technicians to minimize downtime and reduce repeat visits.
• Warranty repairs done at our certified dealership ensure correct procedures and can prevent future delays or additional costs.