Frequently Asked Questions

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

• Check the gas cap: a loose or damaged cap is a common, inexpensive cause for the light on a 2022 Lexus IS 500.
• Look for obvious signs: low oil, strange smells, or visible leaks—these can indicate urgent issues.
• Note vehicle behavior: hesitation, misfires, or reduced power can mean a serious engine or ignition fault.
• If the light is flashing, stop driving and have the vehicle inspected immediately by our certified technicians to avoid further damage.
• For warranty-covered repairs, remember they must be performed at a certified dealership; our factory-trained team ensures proper diagnostics and long-term savings versus many independent shops.

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

• Ignition misfires from aging spark plugs or coils are frequent causes on V8 engines like the 5.0L in the 2022 Lexus IS 500.
• Faulty oxygen sensors or catalytic converter efficiency issues can trigger emissions-related codes.
• Air/fuel trim problems—such as vacuum leaks or a failing mass airflow sensor—are also common.
• Many root causes are easily fixed when diagnosed quickly; delaying repair on an emissions or misfire issue can increase parts and labor costs.
• Bring your vehicle to our dealership for factory diagnostics and certified repairs to protect warranties and realize immediate and long-term savings compared with many independent options.

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

• Typical diagnostic fees at Nalley Lexus Roswell cover computerized code reading and a technician inspection; prices vary but are competitive and often lower than independent shops when factoring in value.
• Common follow-up repairs range from inexpensive fixes—gas cap or sensor replacement ($100–$400)—to larger jobs like catalytic converter replacement ($1,000–$2,500).
• We emphasize immediate and long-term savings: factory-trained technicians, genuine parts, and correct first-time repairs reduce repeat visits and overall cost.
• Any repair covered under warranty must be performed at a certified dealership to ensure coverage—our service center handles warranty work promptly and correctly.

How long does a check engine light service take?

• Standard diagnostic scans and a basic inspection typically take 30–90 minutes, depending on symptoms and required tests for the 2022 Lexus IS 500.
• If repairs are needed—spark plugs, coils, or sensors—most jobs are completed the same day when parts are available; more complex issues may require 1–2 days.
• We offer transparent time estimates, priority scheduling for urgent issues, and factory-trained technicians who streamline diagnosis to reduce downtime.
• Choosing our dealership often yields faster, more reliable service and long-term savings compared with some independent shops; warranty repairs must be done at a certified dealership to maintain coverage.

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

• A steady check engine light indicates the vehicle’s computer has detected an emissions, ignition, or sensor fault that requires attention.
• Causes range from simple—loose gas cap, oxygen sensor—to serious—engine misfires, catalytic converter problems, or fuel system issues.
• A flashing check engine light signals a severe misfire or condition that can cause immediate engine or catalytic converter damage; stop driving and seek service right away.
• Our certified service center uses Lexus-specific diagnostics to identify the exact code and recommended repair, protecting performance and resale value while often costing less than independent shops over time.