Frequently Asked Questions

How long does a check engine light service take?

• Basic diagnostic scan for a 2022 Lexus ES 300h typically takes 30–60 minutes; many issues are identified during that visit.
• Minor repairs (tighten gas cap, replace sensor) are often completed the same day, usually within 1–3 hours.
• Complex repairs (catalytic converter, hybrid system components) can take longer — from several hours to a few days depending on parts availability.
• Nalley Lexus Roswell uses factory-trained technicians and genuine parts, which often delivers faster, more reliable repairs and immediate and long-term savings compared with many independent shops.
• Remember: repairs covered under warranty must be performed at a certified dealership to preserve coverage and ensure proper calibration.

What does it mean when the check engine light comes on in a 2022 Lexus ES 300h?

• The light signals the powertrain control module has detected an emissions, ignition, fuel, or hybrid system fault that needs attention.
• A steady light usually indicates a stored fault code; a flashing light signals a more severe condition, such as misfire, that can damage the catalytic converter.
• Causes range from a loose gas cap to oxygen sensor faults, misfires, EV/hybrid system notifications, or catalytic system degradation.
• Prompt diagnosis at Nalley Lexus Roswell prevents escalation, protects fuel economy and emissions systems, and preserves long-term value.
• Any warranty-covered repairs must be completed at a certified dealership to maintain coverage and proper system updates.

How much does a check engine light diagnostic cost for a 2022 Lexus ES 300h?

• Diagnostics at Nalley Lexus Roswell are competitively priced; most check-engine scans range from approximately $100–$150, depending on inspection depth and any additional testing.
• We often cost less than independent shops while providing factory-level expertise, calibrations, and genuine parts for better long-term reliability.
• If your vehicle is under warranty, diagnostic and covered repairs must be performed at a certified dealership to keep warranty protection intact.
• Choosing our certified service team delivers immediate savings through accurate diagnosis and long-term savings by preventing repeat failures and improper fixes.

What is the most common reason for check engine light on a 2022 Lexus ES 300h?

• The most frequent cause is a loose or faulty gas cap causing an EVAP system code and reduced fuel system pressure.
• Other common causes include oxygen sensor failure, catalytic converter efficiency issues, engine misfire, and hybrid system alerts specific to the ES 300h.
• Ignoring these codes can increase fuel use, damage emission components, or cause costly repairs later on.
• Nalley Lexus Roswell’s factory-trained technicians diagnose the root cause quickly and help you understand immediate and long-term cost implications.

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

• Check that the gas cap is properly tightened; a loose cap is the simplest and most common fix.
• Look for obvious issues: low fuel, unusual noises, smoke, or reduced performance — if present, pull over safely and contact us.
• If the light is flashing, reduce speed and have the vehicle inspected immediately to avoid engine or catalytic converter damage.
• For a reliable diagnosis and warranty protection, bring your 2022 Lexus ES 300h to Nalley Lexus Roswell where certified technicians use OEM scanners and genuine parts.