Frequently Asked Questions

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

• Check for obvious issues first: loose or missing gas cap, recent fuel filled with wrong octane, or visible leaks under the vehicle.
• Listen and feel for symptoms: rough idle, stalling, loss of power, or unusual noises—these clues guide diagnostics.
• Use a professional scan: an OBD-II code read gives the exact trouble code and narrows repairs quickly and accurately.
• Bring the vehicle to Nalley Lexus Roswell: we use factory-grade tools and technicians to ensure repairs meet warranty requirements and save you money long term.

What is the most common reason for check engine light on a 2023 Lexus RC F?

• Faulty oxygen sensors and catalytic efficiency codes (P0135, P0420) are common and, if ignored, can raise fuel use and emissions.
• Evaporative system leaks (small gas cap or evap leak codes) cause persistent lights and are inexpensive to fix when addressed quickly.
• Misfires (P0300-series) from ignition or fuel issues appear frequently and can damage the catalytic converter if not repaired promptly.
• At Nalley Lexus Roswell we diagnose accurately, use genuine parts, and performing warranty-covered repairs at a certified dealership protects your investment and often costs less than independent shops.

How much does a check engine light diagnostic cost for a 2023 Lexus RC F?

• Diagnostics typically start with an OBD-II scan; many dealerships offer a complimentary or low-cost initial scan—check our latest service specials for details.
• If additional testing is required, we provide a clear estimate before work begins so you understand immediate and long-term savings.
• Choosing Nalley Lexus Roswell often costs less than independent shops because our factory-trained technicians correctly identify root causes and avoid repeat repairs.
• Repairs covered under warranty must be performed at a certified dealership to preserve coverage—our certified service ensures warranty protection and long-term value.

How long does a check engine light service take?

• Basic code reading and inspection can take 30–60 minutes; more involved diagnostics or drive-cycle checks may require a few hours.
• Simple repairs like replacing an O2 sensor or tightening a gas cap can often be completed the same day.
• Complex issues—misfires, catalytic converter faults, or drivability problems—may need extended diagnostic time; we provide realistic timelines and status updates throughout.
• Bring your 2023 Lexus RC F to Nalley Lexus Roswell for efficient, factory-standard service that often reduces future downtime and repair costs.

What does it mean when the check engine light comes on in a 2023 Lexus RC F?

• The check engine light signals the vehicle’s diagnostics system has detected an irregularity—from emissions to engine performance issues.
• Codes range from minor (like evap leaks) to serious (misfires or sensor failures) and should be evaluated promptly to prevent further damage.
• Immediate diagnosis by Nalley Lexus Roswell ensures genuine parts and factory procedures are used; warranty-covered repairs must be done at a certified dealership.
• Addressing the issue quickly at our dealership often yields immediate savings and avoids higher long-term costs associated with unresolved problems.