Frequently Asked Questions

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

• Check the gas cap: a loose or damaged cap is a common, simple cause and can set off the light.
• Listen and observe: note any rough idle, loss of power, smoke, or unusual noises that indicate a serious issue.
• Check basic fluids and dashboard messages; low oil or overheating warnings change priorities.
• Do not repeatedly reset the light — clearing codes masks problems and can lead to bigger failures.
• Bring your 2026 Lexus ES to Nalley Lexus Smyrna for an OEM diagnostic; repairs covered under warranty must be performed at a certified dealership.

How much does a check engine light diagnostic cost for a 2026 Lexus ES?

• Diagnostic fees vary, but typical dealer scans start around $100–$150 and are often applied to repair costs if you proceed.
• Repair costs depend on the fault: simple fixes like a gas cap or sensor are low-cost; major repairs can range from a few hundred to several thousand dollars.
• Nalley Lexus Smyrna frequently costs less than independent shops when factoring immediate and long-term savings, thanks to accurate diagnostics and genuine parts.
• Warranty repairs must be completed at a certified dealership to remain valid; using our factory-trained technicians protects your coverage and reduces future expense.

What does it mean when the check engine light comes on in a 2026 Lexus ES?

• It indicates the vehicle’s onboard computer detected a fault related to emissions, engine performance, or sensor systems.
• Codes can range from minor (evap leaks, loose gas cap) to serious (misfires, catalytic converter failure).
• An accurate OEM scan at Nalley Lexus Smyrna identifies the exact code and recommended repair path.
• Prompt dealer service protects long-term value and warranty eligibility; certified repairs must be completed at a dealership to preserve coverage.

What is the most common reason for check engine light on a 2026 Lexus ES?

• Common causes include a loose gas cap, oxygen sensor faults, EVAP system leaks, or ignition/misfire issues.
• Many of these start small but can escalate to catalytic converter damage or poor fuel economy if ignored.
• Our factory-trained technicians quickly isolate root causes using OEM scanners, avoiding unnecessary parts replacement.
• Having repairs performed at Nalley Lexus Smyrna often results in lower total cost over time compared with patchwork repairs elsewhere.

How long does a check engine light service take?

• Initial diagnostic scans typically take 30–90 minutes depending on symptoms and access to the vehicle.
• Simple repairs (gas cap, sensor replacement) can often be completed same-day; complex repairs require additional time for parts and testing.
• Nalley Lexus Smyrna schedules efficiently and uses OEM tools to minimize downtime and avoid repeat visits.
• Remember: warranty-covered repairs must be done at a certified dealership, and dealer-performed repairs protect long-term savings.