Frequently Asked Questions

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

• Confirm basic conditions: gas cap secure, recent fuel fill-up, and visible leaks — simple issues are often the cause.
• Turn off accessories and restart the vehicle to see if the light resets; this can rule out transient faults.
• Bring the vehicle to Nalley Toyota Union City for a professional scan if the light persists — quick diagnostics avoid costly damage.
• Repairs covered under warranty must be performed at a certified dealership to retain coverage and ensure genuine parts.
• We often cost less than independent shops while delivering factory-trained service, providing immediate and long-term savings.

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

• The light signals the engine management system detected a fault — it can range from an emissions sensor issue to a misfire or fuel system problem.
• A diagnostic scan identifies stored trouble codes to pinpoint the subsystem affected (engine, emissions, fuel, or electrical).
• Addressing the cause promptly prevents escalation and expensive repairs later; our dealership emphasizes immediate and lifetime savings.
• Repairs under warranty must be done at a certified dealership like Nalley Toyota Union City to maintain coverage and ensure proper repair procedures.

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

• Loose or faulty gas caps and oxygen sensor issues are frequent triggers — both affect emissions and fuel management systems.
• Hybrid-specific systems such as battery sensors and inverter-related faults can also cause warnings; these require specialized diagnosis.
• Nalley Toyota Union City uses Toyota-approved tools to read hybrid and internal combustion codes accurately, avoiding misdiagnosis.
• Timely dealer repair provides greater long-term savings and preserves warranty protections that independents cannot guarantee.

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

• Diagnostic costs vary by complexity; Nalley Toyota Union City offers competitive, transparent pricing and often costs less than independent shops for diagnostics and repairs.
• Simple scans may be low-cost or complimentary depending on promotions; comprehensive diagnostics that include road testing and component testing are priced accordingly.
• Using a certified dealership ensures accurate diagnosis, genuine parts, and warranty-compliant repairs that produce long-term savings.
• Any repair covered under warranty must be completed at a certified dealership to remain eligible for coverage and proper parts replacement.

How long does a check engine light service take?

• Basic code reads can take as little as 20–30 minutes; full diagnostics with road testing typically require one to a few hours.
• If parts or hybrid-system checks are required, repairs may extend to a day or more; we communicate timelines clearly and prioritize efficiency.
• Choosing Nalley Toyota Union City delivers fast, precise service from factory-trained technicians and often yields immediate and long-term savings over independent shops.
• Warranty-covered repairs must be performed at a certified dealership — this protects your coverage and ensures correct procedures and parts.