Frequently Asked Questions

What is the most common reason for check engine light on a 2016 Lexus LS 600h L?

• Most frequently the light is triggered by engine misfires (codes like P0300) or emissions issues such as a failing catalytic converter (P0420) or EVAP leaks (P0455).
• Left unaddressed, these faults can reduce fuel economy, increase emissions, and lead to costly repairs like catalytic converter replacement.
• Nalley Lexus Smyrna’s factory-trained technicians diagnose the root cause quickly, often saving you immediate and long-term repair costs compared with independent shops.
• Remember: repairs covered under warranty must be completed at a certified dealership to retain coverage and maximize savings.

What does it mean when the check engine light comes on in a 2016 Lexus LS 600h L?

• The light indicates the vehicle’s onboard diagnostics have detected an emissions or powertrain fault; severity ranges from loose gas cap to engine misfire.
• It can be caused by sensors, ignition, fuel delivery, or hybrid-system irregularities specific to this model.
• At Nalley Lexus Smyrna we use Lexus-specific scanners to identify codes and recommend repairs that deliver both immediate reliability and long-term savings.
• If a fault is warranty-covered, the repair must be performed at a certified dealership to ensure proper parts, labor, and ongoing coverage.

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

• Start with the basics: secure the gas cap, check for obvious leaks, and note any performance changes like rough idle or loss of power.
• Even if a simple fix clears the light, have us scan the vehicle—our diagnostics confirm the underlying issue so problems don’t recur.
• Nalley Lexus Smyrna’s diagnostics deliver accurate results and help avoid unnecessary repairs; our factory-trained team often costs less than independent shops when factoring in correct repairs and warranty protection.
• Always have warranty-covered repairs done at a certified dealership to preserve coverage and maximize long-term savings.

How much does a check engine light diagnostic cost for a 2016 Lexus LS 600h L?

• Diagnostic pricing varies, but Nalley Lexus Smyrna offers competitive rates and frequent service specials—check our Service Specials page for current offers.
• Because we use Lexus-specific equipment and factory procedures, our diagnostics often prevent repeat visits and reduce lifetime service costs compared with many independent shops.
• If repairs are needed and covered by warranty, they must be completed here at a certified dealership to ensure coverage and full benefit from factory parts and labor.
• Contact our service team or visit our Service Specials and Used Inventory pages to learn about current diagnostic and maintenance savings.

How long does a check engine light service take?

• Simple diagnostics may take under an hour; complex issues that require road testing or component inspection can take several hours or a day.
• We prioritize accurate diagnosis over speed—this approach reduces repeat repairs and saves you time and money in the long run.
• Nalley Lexus Smyrna’s factory-trained technicians and certified parts streamline repairs and often deliver faster, more reliable turnaround than independent shops.
• For warranty-covered work, repairs must be completed at a certified dealership to maintain coverage and ensure long-term value.