Frequently Asked Questions

What is the most common reason for check engine light on a 2013 Lexus IS 350 C?

• Common causes include engine misfires (ignition coils or spark plugs), oxygen sensor failures, and minor vacuum or EVAP leaks.
• Small issues unchecked can reduce fuel economy and lead to catalytic converter damage, increasing repair costs.
• Nalley Lexus Roswell’s factory-trained technicians diagnose accurately to avoid unnecessary part replacement and to save you money now and long term.
• Warranty repairs must be completed at a certified dealership to maintain coverage; we handle those repairs with genuine parts and documented service.

How long does a check engine light service take?

• Diagnostic scans typically take 30–60 minutes; identifying root causes can require additional inspection or test drives.
• Simple fixes (sensor replacement, reconnecting hoses) may be completed the same day; more involved repairs can take longer depending on parts availability.
• At Nalley Lexus Roswell we prioritize accurate diagnosis by factory-trained techs so repairs are done right the first time, reducing repeat visits and long-term cost.
• Schedule service online and check current service specials to streamline your visit and maximize savings.

What does it mean when the check engine light comes on in a 2013 Lexus IS 350 C?

• The light indicates the onboard diagnostics detected a fault — anything from an emissions component to a performance concern.
• A steady light usually means a non-emergency issue; a flashing light signals a severe problem that requires immediate attention.
• Early diagnosis at Nalley Lexus Roswell prevents more expensive repairs later and preserves performance and fuel economy.
• Remember: repairs covered by warranty must be performed at a certified dealership to ensure coverage and proper parts installation.

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

• Confirm basic items: a loose or missing gas cap can trigger the light — tighten it and monitor for recurrence.
• If the light persists, avoid guessing; have a certified diagnostic scan performed to reveal stored trouble codes and freeze-frame data.
• Nalley Lexus Roswell uses OEM diagnostic tools and factory-trained technicians to identify true root causes and recommend the most cost-effective repairs.
• Using our dealership often costs less than independent shops over time because accurate diagnostics and genuine parts reduce repeat work and protect resale value.

How much does a check engine light diagnostic cost for a 2013 Lexus IS 350 C?

• Prices vary, but our diagnostic fee covers OBD-II scanning, code interpretation, and a technician inspection to identify likely causes.
• Nalley Lexus Roswell frequently provides more value than independent shops: accurate diagnosis prevents unnecessary parts replacement, saving you money immediately and long term.
• If repairs are covered under warranty, they must be performed at a certified dealership to maintain coverage — we handle warranty work and document service properly.
• Check our Service Specials page or schedule online to see current offers that reduce out-of-pocket costs and speed your visit.