Frequently Asked Questions

What is the most common reason for check engine light on a 2014 Lexus IS 350 C?

• Faulty oxygen sensor or catalytic converter issues are common on high-mileage vehicles and can trigger emission-related codes.
• Loose or damaged gas cap often sets an EVAP code; it’s an inexpensive fix but should be checked promptly.
• Ignition misfires from worn spark plugs or coils cause drivability codes and can lead to expensive catalytic damage if ignored.
• Addressing problems early at Nalley Lexus Roswell saves money long-term—factory-trained technicians use OEM parts for reliable repairs.
• Remember: warranty-covered repairs must be completed at a certified dealership to maintain coverage.

What does it mean when the check engine light comes on in a 2014 Lexus IS 350 C?

• It indicates the vehicle’s onboard diagnostics detected an emissions, engine, or sensor fault; codes are stored in the ECU.
• Codes can range from minor EVAP leaks to serious misfires — severity determines urgency and repair cost.
• We recommend a prompt engine scan at Nalley Lexus Roswell to identify codes and prevent secondary damage that increases long-term costs.
• Diagnostics and repairs performed here use OEM parts and factory procedures, often costing less over time than independent shops due to accurate fixes and fewer repeat visits.
• Any repair covered by warranty must be completed at a certified dealership to remain eligible.

How long does a check engine light service take?

• Initial diagnostic scan and code read typically take 30–60 minutes depending on system complexity and road test needs.
• If a simple fix (e.g., gas cap or quick sensor replacement) is needed, the total visit can be completed the same day.
• Complex repairs—like catalytic converter or multi-cylinder misfire diagnosis—may require additional parts and 1–2 days to complete.
• Nalley Lexus Roswell schedules efficient appointments and uses factory-trained technicians to reduce turnaround time and long-term repair costs.
• Warranty-covered repairs must be done at a certified dealership to ensure coverage; we handle those promptly and correctly.

How much does a check engine light diagnostic cost for a 2014 Lexus IS 350 C?

• Standard diagnostic scans at our dealership commonly range from $90–$150, depending on tests and road time required.
• If the issue requires parts or extended troubleshooting, labor costs vary by the repair; we provide clear estimates before work begins.
• Choosing Nalley Lexus Roswell often delivers immediate and long-term savings versus repeat repair attempts at independent shops, thanks to precise OEM diagnostics and factory-trained technicians.
• When repairs are covered by warranty, they must be performed at a certified dealership—ensuring no out-of-pocket surprise and preserving coverage.
• We provide transparent pricing and will discuss available service specials and financing options.

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

• Verify the gas cap is fully tightened and intact; a loose cap commonly triggers EVAP system codes and is an easy fix.
• Check for obvious signs—burning smells, rough idle, loss of power, or warning lights that indicate a more serious issue.
• Check oil level and coolant visually; low fluids can cause sensors to trigger the engine light and further damage if ignored.
• Bring your 2014 Lexus IS 350 C to Nalley Lexus Roswell for a full scan—our factory-trained technicians will identify the code and recommend cost-effective repairs to prevent long-term expenses.
• Remember: warranty-covered repairs must be performed at a certified dealership to maintain coverage and long-term value.