Frequently Asked Questions

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

• It signals the vehicle’s onboard diagnostics detected an issue — anything from a loose fuel cap to emissions, ignition, or sensor problems.
• At Larry H. Miller Toyota Peoria in Peoria, AZ, our factory-trained technicians use OEM diagnostic tools to identify the exact code and give a clear repair plan.
• Bringing your 2024 Toyota Sienna here often costs less than independent shops, and we focus on immediate savings through accurate diagnosis plus long-term savings by preventing bigger repairs.
• Warranty-covered repairs must be performed at a certified dealership to preserve coverage — our team handles warranty work transparently and efficiently.
• To get started, schedule service online or check current service specials for additional savings.

How long does a check engine light service take?

• Most diagnostics are completed the same day; initial code reading and a basic diagnostic typically take 30–90 minutes depending on the issue.
• If additional testing or parts are required, our advisors will provide a transparent estimate and timeline before any work begins.
• We prioritize quick turnarounds while using OEM parts and factory procedures to protect vehicle longevity and resale value.
• Ask about service financing to get needed repairs now and pay over time; our staff will include financing options in your estimate.
• Ready to book? Schedule appointment online or view our service specials to save.

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

• Diagnostics at Larry H. Miller Toyota Peoria start at approximately $63 for a basic check — we price competitively and transparently.
• That starting price reflects precise OEM diagnostics; diagnosing correctly now saves you money over time by avoiding incorrect repairs.
• Many customers find our certified service delivers better long-term value than one-off shops because repairs use Toyota parts and factory procedures.
• We also offer service financing so you can get the repair started today and pay later, and warranty repairs are handled by our certified technicians to keep coverage intact.
• Book a time to bring your 2024 Toyota Sienna in: schedule service or see available service specials.

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

• The most frequent causes are oxygen sensor faults, loose or damaged gas caps, catalytic converter issues, or ignition misfires — reasons vary by mileage and driving patterns.
• Our technicians at Larry H. Miller Toyota Peoria diagnose codes to pinpoint the root cause, reducing unnecessary part replacements and saving you money.
• Fixing the problem promptly protects fuel economy and prevents component damage; we emphasize both immediate savings and long-term value.
• If your vehicle is under warranty, repairs must be completed at a certified dealership to remain covered — our team manages warranty claims professionally.
• To address a persistent light, schedule service and review current service specials.

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

• Start with the simple: ensure the gas cap is tightened — a loose cap is a common trigger and quick to remedy.
• If the light remains, bring your 2024 Toyota Sienna to Larry H. Miller Toyota Peoria so our certified techs can run an OEM diagnostic scan and interpret codes accurately.
• Prompt, dealership-level diagnostics reduce the risk of more costly repairs later. We’ll provide clear options and explain immediate and long-term savings.
• We back work with warranty protections when applicable and offer service financing so repairs won’t have to wait.
• To act now, schedule appointment or explore current service specials.