Frequently Asked Questions

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

• Loose or failing gas cap — often a simple fix that restores fuel system pressure and clears the light.
• Oxygen sensor or catalytic converter issues — affect emissions and fuel economy; timely repair prevents more costly damage.
• Ignition or fuel system problems — misfires caused by spark plugs, coils, or injectors can trigger the light and harm performance.
• Our technicians diagnose the root cause using OEM-grade tools and explain immediate and long-term savings by repairing correctly the first time.
• Remember: warranty-covered repairs must be completed at a certified dealership to remain eligible.

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

• It indicates the vehicle’s onboard diagnostics detected a fault in emissions, fuel, ignition, or related systems.
• The light can signal anything from a minor issue — like a loose fuel cap — to serious mechanical failures requiring immediate service.
• Diagnostic trouble codes guide repairs; our factory tools read codes and provide Toyota-specific repair information.
• Using Nalley Toyota of Roswell often costs less than independent shops while delivering higher service standards and factory-trained technicians.
• For any warranty-covered repair, work must be performed by a certified dealership to preserve coverage and ensure OEM parts are used.

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

• Check the gas cap: ensure it’s tightened until it clicks — a common, quick fix that may clear the light after a few drive cycles.
• Note any performance changes such as rough idle, stalling, or reduced power — relay these to our service advisors for faster diagnosis.
• A scanned diagnostic code is the next step; our dealership uses Toyota-specific scanners to identify precise faults.
• For warranty protection and long-term savings, have any required repairs performed at Nalley Toyota of Roswell by factory-trained technicians.

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

• Diagnostic costs vary; many issues are identified with a standard scan fee, while complex problems may require deeper inspection and additional labor.
• At Nalley Toyota of Roswell we provide transparent estimates and explain immediate and long-term savings compared with repeated, incomplete repairs.
• Dealership diagnostics include Toyota-specific tools and access to official repair procedures, reducing the risk of misdiagnosis and follow-up costs.
• When work is covered under warranty, repairs must be completed at a certified dealership to maintain coverage and ensure genuine parts are used.

How long does a check engine light service take?

• Simple issues like a loose gas cap or clearing stored codes can take a few minutes to an hour.
• Diagnosis of more complex problems may take several hours or a day, depending on parts availability and the scope of repairs.
• Nalley Toyota of Roswell aims to minimize downtime with efficient scheduling, OEM parts, and factory-trained technicians who resolve issues right the first time.
• We emphasize both immediate savings and long-term value—proper dealership service prevents repeat visits and costly follow-up repairs.