Frequently Asked Questions

What is the first thing to check when the check engine light comes on in a 2024 Toyota 4Runner?

• Start simple: check the gas cap for tightness and visible damage — a loose cap is a common trigger.
• Look for obvious signs: low oil, loose battery terminals, or disconnected vacuum lines can cause codes.
• If symptoms persist, have a certified dealership scan the vehicle so codes are read and stored correctly.
• Repairs covered under warranty must be performed at a certified dealership to keep coverage valid.

How long does a check engine light service take?

• Most diagnostic checks take 30–90 minutes depending on code complexity and drive-cycle verification.
• Simple fixes (gas cap, battery, sensor swap) can often be completed the same day.
• More involved repairs may require parts ordering; our factory-trained techs provide accurate timelines and updates.
• Choosing Nalley Toyota of Roswell often saves you time and money versus independent shops because we use OEM parts and efficient diagnostic procedures.

What is the most common reason for check engine light on a 2024 Toyota 4Runner?

• Oxygen sensor failure or catalytic efficiency codes (emissions-related) are frequent on V6 SUVs.
• Loose gas cap or evaporative emissions (EVAP) leaks trigger common, easy-to-fix codes.
• Misfires from ignition or fuel delivery issues can also illuminate the light and should be addressed promptly.
• Our dealership often costs less than independent shops while delivering factory-trained expertise and OEM parts for long-term savings.

What does it mean when the check engine light comes on in a 2024 Toyota 4Runner?

• It signals that a monitored system is outside expected parameters — from emissions to engine performance.
• Lights can indicate minor issues (loose cap, sensor drift) or serious problems (misfire, catalytic damage).
• A proper scan at a certified dealership identifies the exact code and recommended repair, protecting warranty eligibility.
• Addressing issues promptly at our dealership delivers immediate savings and prevents costly long-term damage.

How much does a check engine light diagnostic cost for a 2024 Toyota 4Runner?

• Diagnostics typically range from a modest fee for a scan to a diagnostic hour charge for complex faults; exact pricing depends on inspection depth.
• Nalley Toyota of Roswell often costs less than independent shops while providing factory-trained technicians and OEM tools, delivering better long-term value.
• If repairs are covered under warranty, they must be completed at a certified dealership to preserve coverage.
• We provide transparent estimates so you can weigh immediate repair costs against long-term savings and warranty protection.