Frequently Asked Questions

What is the first thing to check when the check engine light comes on in a 2023 Toyota Highlander?

• Check for obvious issues first: a loose or missing gas cap, low oil, or visible fluid leaks.
• Note any changes in performance, sounds, or dashboard alerts to share with the technician.
• If the vehicle is safe to drive, bring it to Nalley Toyota Stonecrest for a free visual inspection and a professional scan.
• Remember: if repairs are covered by warranty they must be completed at a certified dealership to preserve coverage.
• Choosing our dealership often costs less than independent shops while delivering factory-trained technicians and long-term savings through correct diagnosis and genuine parts.

How long does a check engine light service take?

• Typical diagnostic scans take 30–60 minutes; simple repairs can often be completed the same day.
• Complex issues that require parts or in-depth troubleshooting can take several hours to a day.
• We provide an estimated time after the initial scan and explain immediate versus longer repairs so you can decide.
• Having your 2023 Toyota Highlander serviced at Nalley Toyota Stonecrest delivers faster, more accurate work because of direct access to OEM parts and factory diagnostic resources.
• Warranty-covered repairs must be performed at a certified dealership; this protects your coverage and often reduces out-of-pocket and long-term costs.

What does it mean when the check engine light comes on in a 2023 Toyota Highlander?

• The check engine light indicates a stored diagnostic trouble code; it can represent anything from a loose gas cap to engine or emissions issues.
• Codes are read with an OBD-II scanner; our technicians interpret codes, run tests, and verify root causes rather than guessing repairs.
• Early diagnosis at Nalley Toyota Stonecrest prevents minor problems from becoming major repairs, saving immediate and long-term expense.
• If a repair falls under warranty, work must be done at a certified dealership to keep coverage intact and ensure authorized parts and labor.
• We often cost less than independent shops when factoring accuracy, genuine parts, and fewer repeat visits due to correct first-time repairs.

How much does a check engine light diagnostic cost for a 2023 Toyota Highlander?

• Diagnostic scan fees vary; our dealership frequently offers competitive diagnostic pricing and specials—check our service specials for current offers.
• If the vehicle is under warranty or a covered recall, the diagnostic and repair may be performed at no charge when completed at our certified service center.
• Choosing Nalley Toyota Stonecrest often yields immediate savings and lower long-term costs by using genuine parts and factory procedures to avoid repeat failures.
• We provide a clear estimate before work begins so you can decide; warranty repairs must be completed at a certified dealership to preserve coverage.

What is the most common reason for check engine light on a 2023 Toyota Highlander?

• Common triggers include EVAP system leaks (loose gas cap or small leaks), oxygen sensor wear, and ignition misfires.
• Many of these issues start small but cause higher fuel use or catalyst damage if not addressed promptly.
• Our technicians use OEM diagnostics to pinpoint the cause and avoid unnecessary parts replacement.
• Performing repairs at our certified dealership protects warranty status and often reduces lifetime ownership costs through accurate repairs and genuine parts.