Frequently Asked Questions

What is the most common reason for check engine light on a 2025 Lexus TX 350?

• Loose or faulty gas cap and EVAP system leaks are frequent, inexpensive causes that trigger the light.
• Oxygen sensors, catalytic converter efficiency, and ignition misfires are other common sources that escalate costs if ignored.
• Addressing issues early at Nalley Lexus Roswell preserves fuel economy and prevents larger repairs.
• Repairs covered under warranty must be completed at a certified dealership to retain coverage; we perform factory diagnostics and OEM repairs.

What does it mean when the check engine light comes on in a 2025 Lexus TX 350?

• The light signals that the vehicle’s onboard diagnostics detected an emissions, fuel, ignition, or sensor fault.
• It can range from minor (loose cap) to serious (engine misfire), so a professional scan is required for accurate diagnosis.
• Nalley Lexus Roswell uses factory-grade scanners and software to read codes and recommend repairs with transparent cost estimates.
• Choosing dealership service often costs less over time due to accurate repairs, OEM parts, and maintaining warranty eligibility.

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

• Verify the gas cap is tightened; a loose cap is a common, quick fix that clears EVAP-related codes.
• If the cap is secure, schedule a diagnostic scan—do not ignore persistent lights, as problems can worsen.
• Bring your 2025 Lexus TX 350 to Nalley Lexus Roswell so factory-trained technicians can confirm warranty coverage and perform needed repairs.
• Prompt dealer service can deliver immediate savings and avoid costly long-term damage, preserving resale value.

How much does a check engine light diagnostic cost for a 2025 Lexus TX 350?

• Diagnostic fees vary; at Nalley Lexus Roswell we provide clear pricing and often lower total costs than independent shops when factoring accuracy and long-term savings.
• Many diagnostics are straightforward scans, but complex issues may require more time and inspection—estimates are provided before work begins.
• Repairs covered under warranty must be performed at a certified dealership to maintain coverage; we handle warranty paperwork and OEM parts.
• Check our current service specials for discounted diagnostics and maintenance at /specials/service.htm.

How long does a check engine light service take?

• Simple diagnostics and resets can take under an hour; repairs depend on the issue and parts availability.
• Typical inspections and minor repairs often finish the same day; more complex repairs may require a day or two.
• We prioritize accurate diagnostics so you save time and money long term—factory-trained technicians reduce rework and repeat visits.
• Schedule online or visit Nalley Lexus Roswell in Roswell, GA to get an estimated time based on your vehicle’s specific codes and needs.