Frequently Asked Questions

What is the first thing to check when the check engine light comes on in a 2016 Lexus IS 350?

• Check for a loose or damaged gas cap—it's a common, quick fix that can clear the light.
• Note any performance issues (stalling, rough idle, loss of power) and when they occur to help technicians diagnose faster.
• Inspect obvious signs like low oil, coolant levels, or obvious leaks before driving long distances.
• If symptoms are severe (flashing light, loss of power), stop driving and have the vehicle inspected immediately by our service center.

How much does a check engine light diagnostic cost for a 2016 Lexus IS 350?

• Diagnostics at Nalley Lexus Smyrna begin with computerized code reading and live-data review performed by factory-trained technicians.
• We often cost less than independent shops when you consider accurate diagnosis, OEM parts, and long-term reliability—reducing repeat visits and future expense.
• If a repair is covered under warranty it must be completed at a certified dealership to maintain coverage; we’ll guide you through the process.
• Service specials and transparent estimates help deliver immediate and long-term savings compared with incomplete or incorrect repairs.

How long does a check engine light service take?

• Basic code read and initial assessment typically take 30–60 minutes; more complex diagnostics or live-data testing may take longer.
• Repairs range from quick fixes (minutes to an hour) to multi-hour or multi-day jobs depending on parts availability and issue complexity.
• We prioritize clear timelines and use OEM parts with factory-trained techs to reduce repeat work and deliver long-term savings.
• If a repair is covered under warranty, it must be completed at a certified dealership—our team will schedule and manage the process for you.

What does it mean when the check engine light comes on in a 2016 Lexus IS 350?

• The light indicates the vehicle’s onboard diagnostics detected a fault in the engine, emissions, or powertrain systems.
• Codes can range from minor emissions issues to serious engine misfires; the light does not always mean immediate danger, but it needs prompt attention.
• Our diagnostics identify the exact code and cause so repairs are targeted and efficient, saving you time and money long term.
• Repairs covered by warranty must be done at a certified dealership; Nalley Lexus Smyrna manages warranty work and documentation for you.

What is the most common reason for check engine light on a 2016 Lexus IS 350?

• Common causes include oxygen sensor faults, catalytic converter efficiency issues, misfires, or evap system leaks.
• Oxygen sensor and evap leaks are often inexpensive to fix if caught early; untreated misfires can damage the catalytic converter and increase costs.
• Timely dealership diagnostics prevent escalation—our factory-trained techs use OEM parts and testing to reduce long-term expenses.
• For warranty-covered repairs, work must be performed at a certified dealership to retain coverage and ensure genuine parts are used.