Frequently Asked Questions

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

• Faulty oxygen (O2) sensors or catalytic efficiency issues are frequent causes, often starting as small sensor faults before affecting exhaust performance.
• Ignition misfires from worn spark plugs or coils can trigger the light and cause rough running; addressing them early prevents costly catalytic damage.
• EVAP system leaks (loose filler cap or cracked hose) commonly set codes and are relatively inexpensive to correct when diagnosed promptly.
• Nalley Lexus Smyrna provides factory-trained diagnostics to identify root causes quickly, often saving you money compared with delayed or incomplete repairs.

How long does a check engine light service take?

• Initial diagnostic scan and inspection typically take 30–60 minutes, depending on symptoms and stored codes.
• If further testing or road diagnostics are needed, plan for a 1–3 hour appointment to fully isolate intermittent faults.
• Actual repair time varies by repair: sensors or EVAP fixes can be same-day, while catalytic or complex engine repairs may require additional parts and follow-up.
• Choosing Nalley Lexus Smyrna delivers efficient service from factory-trained technicians and accurate timelines that emphasize immediate and long-term savings.

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

• It signals the vehicle’s onboard diagnostics detected a fault in emissions, ignition, fuel delivery, or engine management systems.
• Codes range from minor (loose gas cap, EVAP leak) to serious (misfires, catalytic converter issues) and require a scan to determine severity.
• Timely diagnosis prevents escalation: small fixes cost less, while ignored issues can lead to expensive repairs and reduced fuel economy.
• Repairs covered under warranty must be performed at a certified dealership to retain coverage—our technicians ensure proper documentation and warranty compliance.

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

• Basic diagnostics at Nalley Lexus Smyrna start with a computerized scan to read fault codes and a technician inspection; pricing is competitive and transparent.
• Because we have factory tools and trained staff, our diagnostics are more thorough—resulting in immediate and long-term savings versus repeat visits.
• Repair estimates vary: simple EVAP or sensor repairs are modest, while catalytic converter or engine repairs cost more; we provide clear estimates before work begins.
• Remember: warranty repairs must be done at a certified dealership to remain valid, protecting you from future out-of-pocket expenses.

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

• Confirm the gas cap is tight and undamaged—an easy fix that often clears EVAP-related codes.
• Note any drivability symptoms (stalling, misfire, loss of power) and relay them to our technicians to prioritize diagnostics.
• Bring the vehicle in for a scan as soon as convenient; our factory-trained team uses OEM-grade tools to read codes and avoid misdiagnosis.
• For warranty-covered issues, repairs must be performed at a certified dealership—bringing the car to Nalley Lexus Smyrna protects coverage and ensures quality repairs.