Frequently Asked Questions

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

• It signals the vehicle's onboard diagnostics system has detected an issue affecting emissions, engine performance, or drivetrain components. Common causes range from a loose gas cap to oxygen sensor or catalytic converter issues.
• At Stevinson Toyota West in CO, our factory-trained technicians will run a full diagnostic to identify the exact trouble code and explain any recommended repairs clearly and transparently.
• Choosing the dealership often costs less than independent shops when you factor in accurate diagnostics, OEM parts, and repairs done right the first time—delivering immediate savings and long-term reliability and preventing repeat visits.
• Repairs covered under warranty must be completed at a certified dealership to maintain coverage — we handle warranty work promptly and correctly to protect your vehicle.
• We offer service financing so you can get necessary repairs now and pay over time. To get a precise assessment, schedule service online or review our current service specials before your visit.

How long does a check engine light service take?

• Typical diagnostic scans for a 2025 Toyota Sienna are completed within 30–60 minutes, but total time depends on the required repairs and parts availability.
• If the issue is a simple sensor replacement or minor repair, many jobs are completed the same day. More complex repairs that require ordering OEM parts may take longer; our team provides a clear timeline up front.
• Stevinson Toyota West emphasizes efficiency—quick lane service, genuine Toyota parts, and certified technicians reduce visit time while maintaining high-quality workmanship.
• We also provide options like loaner vehicles, comfortable waiting areas, and rental assistance when extended repairs are necessary.
• To secure a convenient appointment that fits your schedule, schedule appointment online and check our current service specials for added savings.

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

• Diagnostic pricing can vary, but at Stevinson Toyota West we provide competitive and transparent rates; our dealership often costs less than independent shops when you include accurate diagnostics and OEM-backed repairs.
• Paying for a proper diagnostic up front can produce immediate savings by avoiding unnecessary parts replacement and long-term savings by resolving the root cause quickly.
• If your repair is covered under warranty, certified dealership service is required to preserve coverage—our advisors will confirm warranty eligibility before any work begins.
• We offer service financing to help you start repairs today and manage payments over time. Ask our service advisors about available plans when you schedule service.
• Before you come in, check our service specials for current offers that can reduce out-of-pocket cost for diagnostics or repairs.

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

• Common triggers include oxygen sensor failure, catalytic converter issues, misfires, loose or damaged gas caps, and faulty mass airflow sensors.
• Many of these issues, when caught early by a timely diagnostic, can be addressed before causing larger engine damage or reduced fuel efficiency.
• At Stevinson Toyota West, our OEM diagnostics identify the exact trouble code so repairs are targeted and cost-effective—saving you time and expense over trial-and-error fixes.
• Using OEM parts and certified technicians ensures longevity and maintains warranty protections; remember, warranty repairs must be done at a certified dealership.
• To learn the cause and get a detailed repair estimate, schedule service today and see if our service specials apply.

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

• Start with the basics: ensure the gas cap is tightened and the fuel filler is secure—this simple step can trigger and clear the code in many cases.
• If the light remains on, avoid guessing. A proper scan at Stevinson Toyota West will read the stored codes and reveal whether the issue is urgent or minor.
• Our advisors will explain immediate steps, estimated repair costs, and long-term benefits of addressing the issue promptly—often our dealership pricing and OEM approach yield better value than independent shops.
• Warranty constraints mean covered repairs must be handled by a certified dealership; we’ll confirm coverage and next steps during your visit.
• To move quickly, schedule service online and review our service specials for potential savings and financing options.