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, easy fix that can trigger the light.
• Look for obvious issues: leaks, low oil, unusual noises, smoke, or fluid on the ground—do not drive if you see smoke or fluid loss.
• Note recent events: did you fill with a different fuel, run low on fuel, or experience misfires or rough idle?
• If safe, restart the vehicle and see if the light resets; persistent lights should be diagnosed with an OBD-II scan.
• For accurate diagnosis and warranty protection, bring your 2024 Toyota GR Supra to Nalley Toyota Stonecrest—our factory-trained technicians often cost less than independent shops and provide immediate and long-term savings.

How long does a check engine light service take?

• Standard diagnostic scans typically take 30–60 minutes to retrieve codes and basic live-data; deeper investigation can take longer.
• Simple repairs like a gas cap or ignition coil swap may be completed the same day; more involved repairs (fuel system, catalytic work) can take several hours to a day.
• Our certified technicians use OEM tools and genuine parts, reducing rework and return visits—this delivers immediate and long-term savings compared with typical independent shop experiences.
• If repairs are covered under warranty, they must be performed at a certified dealership to preserve coverage—our team will advise on time expectations when you schedule service.

What does it mean when the check engine light comes on in a 2024 Toyota GR Supra?

• The light indicates the vehicle’s onboard diagnostics detected a fault—anything from a loose gas cap to a misfire or emissions component issue.
• Codes can point to ignition, fuel, emissions, or sensor problems; diagnosing quickly limits damage to the engine and emissions system.
• A steady light signals a non-emergency fault; a flashing light often indicates a severe misfire that can damage the catalytic converter and requires immediate attention.
• Bring your 2024 Toyota GR Supra to Nalley Toyota Stonecrest—our factory-trained technicians and OEM equipment often provide lower total cost of ownership versus independent shops, while protecting warranty coverage.

How much does a check engine light diagnostic cost for a 2024 Toyota GR Supra?

• Diagnostic scan fees typically range from about $90 to $150 depending on depth and data logging required; complex diagnostics may cost more if extended testing or road testing is required.
• At Nalley Toyota Stonecrest, we often deliver lower overall cost than independent shops by accurately identifying issues and using OEM parts to avoid repeated repairs.
• If repairs are performed at our dealership and covered by warranty, diagnostic fees may be waived or applied to repair—repairs covered under warranty must be completed at a certified dealership.
• We provide transparent estimates before any work begins, and our factory-trained technicians use manufacturer procedures to protect long-term value and reliability.

What is the most common reason for check engine light on a 2024 Toyota GR Supra?

• Common causes include ignition misfires (spark plugs, coils), oxygen sensor or catalytic converter issues, and fuel trim problems from vacuum leaks or fuel pressure irregularities.
• Minor triggers like a loose gas cap or a failing sensor are frequent and easy to fix when diagnosed promptly.
• Untreated misfires or sensor failures can lead to catalytic converter damage and higher repair costs; quick diagnosis reduces immediate and long-term expenses.
• Nalley Toyota Stonecrest’s certified service team uses OEM diagnostics to pinpoint root causes quickly and often saves customers money over time compared with repeated independent repairs.