Frequently Asked Questions

What is the most common reason for check engine light on a 2013 Lexus IS 250 C?

• Faulty oxygen sensors or mass airflow sensors are frequent triggers and affect emissions and fuel economy.
• Loose or damaged gas caps can cause EVAP system faults that are inexpensive to fix but will illuminate the light.
• Ignition misfires (spark plugs/coils) are common and, if ignored, can damage the catalytic converter.
• Addressing issues early at our dealership saves you money long-term; certified repairs preserve warranties and performance.

What does it mean when the check engine light comes on in a 2013 Lexus IS 250 C?

• The light indicates the vehicle’s onboard diagnostics detected a fault — anything from a loose gas cap to emissions or engine control issues.
• It may be a minor EVAP leak or a sign of sensor failure that affects efficiency and emissions.
• Persistent lights often point to problems that reduce fuel economy or risk further engine and catalytic damage if left untreated.
• Bring the vehicle to Nalley Lexus Roswell for precise diagnostics performed by factory-trained technicians to protect warranty coverage and value.

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

• Verify the gas cap is tightened and undamaged — a loose cap is an easy, common fix that can clear the code.
• If the cap is secure, schedule a diagnostic with our service center to read fault codes and prioritize repairs.
• Do not ignore recurring lights; certified diagnostics prevent small problems from becoming costly repairs.
• Repairs covered under warranty must be performed at a certified dealership to remain valid.

How much does a check engine light diagnostic cost for a 2013 Lexus IS 250 C?

• Diagnostic fees vary by complexity, but our dealership often costs less than independent shops while delivering higher-level service.
• Initial code reading is straightforward; deeper diagnostics may require additional testing, clearly quoted before work begins.
• Choosing Nalley Lexus Roswell delivers immediate and long-term savings through accurate diagnosis, OEM parts, and factory-trained technicians.
• Remember, repairs covered under warranty must be performed at a certified dealership to keep coverage intact.

How long does a check engine light service take?

• Simple inspections or code reads often take less than an hour; repairs vary from quick fixes to several hours depending on parts and labor.
• If parts are needed, our parts team sources OEM components quickly to minimize downtime.
• Nalley Lexus Roswell prioritizes efficient service without cutting corners, delivering reliable long-term value and warranty protection.
• We provide clear time estimates at check-in and work to complete repairs promptly to get you back on the road safely.