Frequently Asked Questions

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

• Verify the gas cap is tight and undamaged — a loose cap is a common trigger on the 2025 Toyota GR Supra 3.0.
• Check basic fluids and dashboard warnings: oil level and coolant can indicate immediate risks.
• If the light is flashing, reduce speed and stop driving when safe — flashing often means a misfire that can damage the catalytic converter.
• Bring your vehicle to Nalley Toyota of Roswell for a prompt scan; warranty-covered repairs must be completed at a certified dealership to retain coverage.
• Our service team and factory-trained technicians help minimize both immediate and long-term repair costs compared with many independent shops.

How much does a check engine light diagnostic cost for a 2025 Toyota GR Supra 3.0?

• Diagnostic scan ranges typically from about $80 to $150 depending on complexity; exact pricing is provided after an initial inspection.
• At Nalley Toyota of Roswell we often charge less than independent shops while delivering higher-level service from factory-trained technicians.
• Choosing dealership service provides immediate savings (accurate diagnosis, correct OEM parts) and long-term savings by preventing misdiagnosis and repeat repairs.
• Repairs covered under warranty must be performed at a certified dealership to remain valid—our service team ensures compliance and documented repairs.
• We provide clear estimates and explain the cost implications of delaying repairs, including potential catalytic converter or engine damage expenses.

What does it mean when the check engine light comes on in a 2025 Toyota GR Supra 3.0?

• The light indicates the vehicle’s on-board diagnostics detected a fault: anything from an emissions sensor to engine misfire or fuel system issue.
• Common triggers include loose gas cap, oxygen sensor faults, EVAP leaks, misfires, or catalytic converter inefficiency.
• Severity ranges from minor (emissions-related) to urgent (flashing misfire) — a timely scan at Nalley Toyota of Roswell identifies the root cause quickly.
• Prompt certified-dealership repairs preserve warranty coverage and prevent higher long-term costs that can result from ignored faults.
• Our factory-trained technicians use OEM diagnostics to deliver accurate results and recommend cost-effective, long-lasting solutions.

What is the most common reason for check engine light on a 2025 Toyota GR Supra 3.0?

• A loose or faulty gas cap and oxygen sensor issues are among the most frequent causes that illuminate the light.
• EVAP system leaks and ignition misfires are also common, especially in high-performance vehicles if maintenance is delayed.
• Ignoring these signs may lead to more costly repairs like catalytic converter replacement or engine damage—costs that grow over time.
• Nalley Toyota of Roswell often provides more competitive pricing than independent shops while offering factory-trained technicians and genuine OEM parts.
• For warranty-covered repairs, work must be performed at a certified dealership to maintain coverage and documentation.

How long does a check engine light service take?

• Initial diagnostic scans usually take 30–90 minutes; the full service duration depends on the issue and whether parts are needed.
• Minor fixes (gas cap, simple sensor replacement) can often be completed the same day; complex repairs may require ordering OEM parts.
• Choosing Nalley Toyota of Roswell provides faster, more accurate diagnosis thanks to factory-grade tools and trained technicians, reducing repeat visits.
• We emphasize immediate and long-term savings by doing the job right the first time and documenting warranty work at our certified facility.
• Contact our service department to confirm appointment times and expected completion for your 2025 Toyota GR Supra 3.0.