Frequently Asked Questions

What does it mean when the check engine light comes on in a 2014 Lexus LS 460?

• It indicates the vehicle’s onboard diagnostics detected a fault in the emissions, fuel, ignition or engine management systems.
• Codes stored in the vehicle pinpoint the subsystem affected — from a loose fuel cap to an oxygen sensor or misfire.
• Some issues are minor and safe to drive on short distances; others can cause damage or increase emissions if ignored.
• Bringing the vehicle to Nalley Lexus Smyrna ensures factory-grade scanning, accurate diagnosis, and OEM repair recommendations.
• Warranty-covered repairs must be completed at a certified dealership to maintain coverage and long-term savings.

How long does a check engine light service take?

• Initial diagnostic scanning typically takes 30–60 minutes using Lexus factory scan tools to read codes and freeze-frame data.
• Simple fixes such as tightening a gas cap or clearing codes can be completed the same day; more involved repairs vary by part and labor.
• Estimated repair times are provided after diagnosis — complex issues like catalytic converter replacement take longer and may require parts ordering.
• Nalley Lexus Smyrna’s factory-trained technicians prioritize accurate, lasting repairs that minimize repeat visits and long-term cost.
• If coverage applies, warranty repairs must be performed at a certified dealership to protect your benefits and future savings.

How much does a check engine light diagnostic cost for a 2014 Lexus LS 460?

• Diagnostic fees at our dealership typically fall within an industry-standard range (for example, $89–$149) depending on the depth of testing required.
• That fee covers factory-grade diagnostics, data analysis by Lexus-trained technicians, and a clear repair estimate.
• Choosing Nalley Lexus Smyrna often costs less than independent shops once you account for OEM parts, precise repairs, and warranty protection.
• Immediate accurate diagnosis reduces the risk of escalating damage and saves money over time compared with quick, incomplete fixes.
• Remember: repairs covered under warranty must be completed at a certified dealership to preserve coverage and long-term value.

What is the most common reason for check engine light on a 2014 Lexus LS 460?

• The most frequent causes include a loose or faulty gas cap, oxygen sensor failure, EVAP system leak, or ignition misfire.
• Oxygen sensors and EVAP leaks are common with age and driving conditions and will affect fuel economy and emissions.
• Early diagnosis prevents secondary damage — for example, unchecked misfires can harm the catalytic converter and increase repair costs.
• Nalley Lexus Smyrna uses OEM diagnostics to identify root causes so you avoid unnecessary parts replacement and enjoy better long-term savings.
• If the issue is warranty-related, repairs must be performed at a certified dealership to ensure coverage and proper recall or service campaign handling.

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

• Start with the simple: ensure the gas cap is tightened until it clicks — a loose cap is a common trigger for codes.
• Check for obvious symptoms like rough idle, reduced power, or unusual smells; flashing lights require immediate attention.
• If the light persists after a tightened cap, schedule a factory diagnostic scan at Nalley Lexus Smyrna for precise code reading.
• Early, correct diagnosis by our Lexus-trained technicians protects your vehicle from costly downstream damage and preserves warranty benefits.
• When warranty applies, repairs must be completed at a certified dealership to maintain coverage and long-term savings.