Frequently Asked Questions

What is the first thing to check when the check engine light comes on in a 2025 Toyota Sequoia?

• Check gas cap: ensure it’s tightened and undamaged; a loose or faulty cap often triggers EVAP system codes.
• Note symptoms: listen for rough idle, hesitation, or unusual noises—these details guide diagnostics.
• Scan for codes: our service center uses factory-grade scanners to read stored codes quickly.
• Immediate safety: if the vehicle drives normally, schedule a diagnostic; if performance is poor, stop driving and call us.
• Warranty reminder: any repairs covered under warranty must be performed by a certified dealership to preserve coverage.

How long does a check engine light service take?

• Typical diagnostic scan: 30–60 minutes for a complete code read and initial inspection using OEM tools.
• Common repairs: simple fixes like replacing a gas cap or sensor can be same-day; more complex repairs may take longer.
• Transparent timeline: Nalley Toyota Stonecrest provides an estimated completion time before we begin work.
• Efficiency & savings: our factory-trained technicians use OEM parts and efficient procedures that often reduce labor hours and long-term repair costs.
• Warranty work must be done here: repairs covered under warranty require a certified dealership to ensure proper documentation and coverage.

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

• Emissions or drivetrain alert: the light signals a detected issue in engine, transmission, or emissions systems.
• Severity varies: a steady light usually means a non-emergency fault; a flashing light indicates a critical condition needing immediate attention.
• Diagnostic first: our technicians scan the vehicle to retrieve trouble codes and recommend the correct repair plan.
• Cost clarity: we explain immediate and long-term costs and how dealer service frequently costs less than independent shops thanks to accurate diagnostics and correct repairs the first time.
• Warranty note: repairs under warranty must be completed at a certified dealership to remain valid.

How much does a check engine light diagnostic cost for a 2025 Toyota Sequoia?

• Competitive diagnostics: our initial scan fee is transparent and often lower than independent shops, delivering immediate savings.
• Included value: diagnostics here include OEM-grade scanning, technician review, and a clear repair estimate—saving you time and future expense.
• Long-term savings: accurate dealer diagnostics prevent misdiagnosis and repeat repairs that increase cost over time.
• Service specials: check our current offers at /specials/service.htm for additional savings on diagnostics and repairs.
• Warranty repairs: any covered repairs must be performed at a certified dealership to preserve warranty protection and benefits.

What is the most common reason for check engine light on a 2025 Toyota Sequoia?

• Oxygen sensor or catalytic efficiency issues are frequent causes and affect emissions performance.
• Minor causes: loose gas cap or EVAP system leaks—often inexpensive to fix if addressed promptly.
• Ignition faults: misfires from spark plugs or coils can trigger codes and, if unchecked, damage the catalytic converter.
• Dealer advantage: our factory-trained technicians diagnose root causes quickly to limit repair scope and long-term expense.
• Warranty reminder: repairs covered under warranty must be done at a certified dealership to ensure coverage and proper parts.