Frequently Asked Questions

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

• Faulty oxygen sensors (P0130–P0167) and EVAP leaks (P0440–P0455) are frequent causes on the 2024 Toyota Highlander.
• Unaddressed issues can reduce fuel economy, increase emissions, and lead to catalytic converter damage—costs that rise quickly if ignored.
• Nalley Toyota Stonecrest’s factory-trained technicians diagnose the root cause quickly to avoid unnecessary replacements and deliver immediate and long-term savings.
• Warranty-covered repairs must be completed at a certified dealership to preserve coverage and ensure proper OEM parts are used.

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

• The light indicates the vehicle’s onboard diagnostics (OBD-II) has detected a fault—anything from a loose gas cap to a serious misfire.
• Codes returned by the scanner point technicians to systems like fuel, ignition, emissions, or sensors so the exact issue can be addressed.
• Timely diagnosis at Nalley Toyota Stonecrest prevents minor faults from becoming major repairs and often costs less than independent shops while delivering higher service levels.
• Remember: repairs covered under warranty must be performed at a certified dealership to maintain protection and use OEM replacement parts.

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

• Start with simple checks: ensure the gas cap is tight and inspect for obvious leaks or unusual noises.
• If the light persists, bring your 2024 Toyota Highlander to Nalley Toyota Stonecrest for a professional OBD-II scan to read the specific trouble codes.
• Our factory-trained technicians use OEM diagnostics and can confirm if a quick fix or deeper repair is needed, helping preserve long-term value and warranty eligibility.

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

• Diagnostic fees vary, but Nalley Toyota Stonecrest offers competitive pricing and transparent estimates; diagnostics often cost less here than at independent shops while providing factory-backed service.
• Because our technicians use OEM tools, we identify the true cause quickly—reducing unnecessary labor and parts costs and delivering immediate and long-term savings.
• If a repair is covered under warranty, the work must be performed at a certified dealership to retain coverage; we’ll explain how warranty factors affect your final price.

How long does a check engine light service take?

• Simple diagnostic scans can be completed in under an hour; repairs vary from a short visit for small fixes to several hours for parts replacement.
• At Nalley Toyota Stonecrest we prioritize efficient, accurate diagnostics so many issues are resolved the same day—minimizing downtime and cost.
• Complex repairs may require parts ordering; our team provides clear timelines and estimates so you understand immediate and long-term impacts, and any warranty work is performed by certified technicians.