Frequently Asked Questions

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

• Loose or damaged gas cap causing an EVAP system fault — simple to fix and often resolves the light immediately.
• Oxygen sensor or catalytic converter issues that affect emissions and fuel economy if left unrepaired.
• Ignition or fuel system misfires related to plugs, coils, or injectors — can harm the turbocharged 2.4L engine if ignored.
• Minor sensors (mass air flow, temp sensors) that are inexpensive to diagnose but affect drivability and MPG.
• Prompt dealer diagnostics prevent escalation, protecting long-term value and avoiding larger repair costs.

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

• It indicates the vehicle’s onboard diagnostics detected a fault — from emissions to engine performance.
• Codes can point to EVAP leaks, sensor faults, misfires, or system irregularities tied to the turbocharged inline-4.
• Some issues are minor; others can degrade fuel economy, increase emissions, or damage components if not addressed.
• Certified dealership diagnostics identify exact code causes and recommend OEM repairs to preserve warranties.
• Repairs covered under warranty must be performed at a certified dealership to ensure coverage and correct procedures.

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

• Check the gas cap for tightness and visible damage; a loose cap is a common, immediate fix.
• Listen for unusual noises and note drivability changes—hesitation or rough idle indicate urgency.
• Limit heavy driving and tow loads until cleared if you notice performance loss, especially with a turbocharged engine.
• Arrange dealer diagnostics promptly—factory-trained technicians use OEM scanners to read codes accurately.
• Using Bill Estes Toyota saves you time and money long term through accurate repairs and warranty protection.

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

• Diagnostic fees vary; many dealer promotions reduce cost and often include a basic scan with inspection.
• At Bill Estes Toyota, diagnostics are competitively priced and frequently cost less than independent shops while delivering superior service.
• Choosing the dealership yields immediate savings from accurate code identification and long-term savings by preventing misdiagnosed repairs.
• Warranty-related repairs must be done at a certified dealership to remain covered—this protects you from future expense.
• We provide transparent estimates before repairs and can schedule prompt OEM-compliant service to minimize downtime.

How long does a check engine light service take?

• Simple scans and inspections often take 30–60 minutes; more complex diagnostics can require 1–3 hours depending on cause.
• Repairs that involve parts replacement or deeper system testing may extend service time—our team provides clear timelines.
• Bill Estes Toyota prioritizes efficiency with trained staff and OEM tools to complete accurate, timely repairs.
• Choosing dealer service means warranty work, when required, is handled without delay by certified technicians.
• We offer loaner options and easy scheduling to reduce inconvenience while preserving long-term value and safety.