Frequently Asked Questions

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

• Verify basic items first: secure gas cap, visible fluid leaks, and obvious wiring or connector damage under the hood of the 2026 Toyota Sequoia.
• Check fuel level and recent fueling events; an improperly seated gas cap can set an evaporative system code.
• Note driving conditions and symptoms—loss of power, odd noises, or smoke—to share with our techs for faster diagnosis.
• If covered under warranty, remember repairs must be performed at a certified dealership to preserve coverage.

How much does a check engine light diagnostic cost for a 2026 Toyota Sequoia?

• Diagnostics typically start around $99–$199 depending on complexity; more advanced diagnosis can take longer and may incur additional charges.
• At Nalley Toyota of Roswell, our pricing is competitive—often costing less than independent shops—because accurate early diagnosis avoids costly follow-up repairs.
• Choosing dealership service offers immediate savings through correct repairs and long-term savings via factory-trained technicians who prevent repeat failures.
• Any warranty-covered repairs must be completed at a certified dealership to maintain protection and ensure parts and labor are applied correctly.

What does it mean when the check engine light comes on in a 2026 Toyota Sequoia?

• It indicates the vehicle’s onboard diagnostics detected an emissions, fuel, ignition, or sensor-related issue—ranging from minor to serious.
• Common triggers include misfires, oxygen sensor faults, catalytic converter efficiency, and evaporative system leaks.
• Immediate inspection at our dealership identifies whether a simple fix or a more extensive repair is needed, saving money by preventing escalation.
• For items under warranty, repairs must be performed at a certified dealership to retain coverage and ensure genuine parts and proper calibrations.

How long does a check engine light service take?

• Initial diagnostic scans and preliminary checks typically take 1–3 hours; many simple repairs can be completed the same day.
• Complex repairs that require parts or extended troubleshooting may take a day or more; we provide clear estimates and timelines upfront.
• Using our dealership often shortens overall repair time by avoiding misdiagnosis and repeat visits—factory training speeds accurate repairs and saves you money long-term.
• If repairs are warranty-covered, they must be completed by a certified dealership to ensure proper documentation and continued coverage.

What is the most common reason for check engine light on a 2026 Toyota Sequoia?

• Frequent causes include ignition misfires, faulty oxygen sensors, and evap system leaks—each affecting emissions, performance, and fuel economy.
• Left unattended, these issues can escalate into catalytic converter damage or engine wear, increasing repair costs substantially.
• Our technicians use OEM diagnostics to pinpoint the exact cause quickly, offering competitive pricing that often beats independent shops while delivering factory-quality repairs.
• Remember: warranty repairs must be handled at a certified dealership so coverage remains valid and future costs are minimized.