Frequently Asked Questions

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

• Check the fuel cap for tightness—an improperly sealed gas cap is a common trigger and an easy fix.
• Confirm recent fuel quality or fill-ups; contaminated fuel can set codes.
• Look for obvious issues: low oil, coolant levels, or disconnected battery terminals.
• If the light persists, have Nalley Toyota Stonecrest inspect the 2024 Toyota Grand Highlander—factory diagnostics identify root causes quickly.
• Remember: warranty-covered repairs must be performed at a certified dealership to preserve coverage and ensure long-term savings.

How long does a check engine light service take?

• Initial electronic scan and code read typically take 30–60 minutes.
• Minor repairs or resets are often completed same day; more complex repairs can take several hours to a day depending on parts.
• Nalley Toyota Stonecrest uses factory-trained technicians and OEM parts to reduce repeat visits and long-term costs.
• We offer transparent timelines and can schedule service to minimize downtime—loaner or shuttle options may be available.
• Warranty work must be done at a certified dealership to ensure immediate and long-term savings through covered repairs and proper documentation.

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

• It indicates the engine control unit detected an issue—ranging from minor emissions faults to performance problems.
• Common causes include evaporative system leaks, oxygen sensor faults, misfires, or catalytic converter concerns.
• A proper scan reveals codes that guide repairs; ignoring them can lead to higher repair costs down the line.
• Nalley Toyota Stonecrest provides precise diagnostics and repairs that often cost less than independent shops while delivering factory-level service.
• For any warranty-covered repair, have work performed at our certified dealership to maintain coverage and guarantee quality.

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

• Diagnostic fees typically range between $80–$150, depending on complexity and inspection time.
• Nalley Toyota Stonecrest frequently offers service specials and competitive pricing that can save you immediately versus independent options.
• If a repair is needed, dealership repairs often produce long-term savings through correct fixes, OEM parts, and reduced repeat visits.
• Warranty-covered diagnostics and repairs must be completed at a certified dealership to preserve coverage and ensure proper repair documentation.
• Contact our service team for current specials, estimates, and transparent cost breakdowns.

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

• The most frequent cause is an evaporative emissions system leak—often a loose or faulty gas cap.
• Sensors (oxygen or mass airflow), ignition misfires, and catalytic converter issues are also common triggers.
• Addressing the issue quickly at Nalley Toyota Stonecrest avoids compounding damage and higher repair bills later.
• Our factory-trained technicians diagnose the true cause faster, often delivering lower total cost of ownership than independent shops.
• Remember: warranty repairs must be performed by a certified dealership to secure coverage and long-term savings.