Frequently Asked Questions

What does it mean when the check engine light comes on in a 2015 Toyota Highlander?

• It indicates the vehicle's onboard diagnostics detected an issue — anything from a loose gas cap to emission, fuel, ignition, or sensor faults.
• At Larry H. Miller Toyota Peoria we use OEM diagnostic tools to identify the exact trouble code and recommend a clear repair plan that protects long-term value.
• Our service often costs less than independent shops while delivering factory-trained technicians, genuine Toyota parts, and warranty-backed repairs for immediate and long-term savings.
• We offer service financing so you can get repairs now and pay later; to book, schedule service online or call our service team.
• Ask about current service specials for diagnostics, batteries, and multi-point inspections to save further.

How long does a check engine light service take?

• Most diagnostics are completed within 30–60 minutes; repairs depend on the fault — simple fixes can be same-day while more involved repairs may take longer.
• Larry H. Miller Toyota Peoria prioritizes quick turnaround with transparent estimates, so you know time and cost before work begins.
• We maintain parts inventory and direct OEM supply lines for faster completion and fewer return visits — a smart value compared with repeated independent attempts.
• When repairs are covered under warranty, they must be completed at a certified dealership to preserve coverage and ensure proper parts and labor standards.
• To get started, schedule appointment or review available service specials to maximize savings.

How much does a check engine light diagnostic cost for a 2015 Toyota Highlander?

• Diagnostic pricing can vary, but our approach focuses on delivering the most accurate result at competitive pricing — many scans start affordably and are clearly quoted up front.
• Larry H. Miller Toyota Peoria often costs less than independent shops when you factor in accurate diagnosis, correct OEM parts, and technician expertise — reducing repeat repairs and long-term expense.
• We provide transparent estimates and discuss options before any repair, and we offer service financing so you can address critical repairs now and pay over time.
• Check our service specials or schedule service to get a prompt diagnostic and recommendation.

What is the most common reason for check engine light on a 2015 Toyota Highlander?

• Common causes include a loose or faulty gas cap, oxygen sensor issues, catalytic converter concerns, mass airflow sensor faults, or ignition system misfires.
• Addressing these quickly at Larry H. Miller Toyota Peoria prevents more expensive damage — our certified technicians pinpoint root causes to protect engine life and fuel economy.
• We back repairs with authorized parts and manufacturer procedures, and warranty work must be done at a certified dealership to maintain protection and value.
• To reduce downtime and cost, schedule service and check current service specials before you visit.

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

• Start with simple checks: make sure the gas cap is tight and inspect for obvious issues. If the light persists, a diagnostic scan is the next step.
• Bring your 2015 Toyota Highlander to Larry H. Miller Toyota Peoria for an accurate scan and prioritized repair plan — our factory tools reduce guesswork and save money over time.
• We emphasize transparent pricing, OEM parts, and warranty-backed repairs; any warranty-covered work should be completed at a certified dealership to preserve coverage.
• Use our online booking to schedule service and ask about financing options to manage cost while getting needed repairs promptly.