Frequently Asked Questions

What is the most common reason for check engine light on a 2016 Lexus LS 460?

• Loose or faulty gas cap is the simplest and most frequent cause — it triggers an EVAP system fault code and is inexpensive to fix.
• Faulty oxygen sensor or mass airflow sensor, which affect emissions and fuel economy if left unaddressed.
• Ignition misfires (spark plugs/coils) can cause performance loss and catalytic converter damage if ignored.
• Emissions-control failures (EVAP leaks, catalytic converter) become more costly over time; early diagnosis prevents expensive downstream repairs.
• Nalley Lexus Smyrna technicians use OEM diagnostic tools to identify root causes quickly, often saving you both immediate and long-term expenses compared with common independent-shop results while delivering factory-level service.

What does it mean when the check engine light comes on in a 2016 Lexus LS 460?

• The light indicates the vehicle’s onboard diagnostics detected an emissions, ignition, fuel, or sensor issue — severity can range from minor to critical.
• A steady light generally means a non-immediate issue that still needs scanned and repaired to avoid long-term damage or failed emissions tests.
• A flashing light signals a serious condition such as an active misfire; you should stop driving and have the vehicle inspected immediately.
• All warranty-covered repairs must be performed at a certified dealership; our factory-trained technicians ensure correct diagnosis, OEM parts, and warranty compliance.
• Bringing your 2016 Lexus LS 460 to Nalley Lexus Smyrna often reduces overall costs by preventing cascading repairs and maximizing fuel efficiency through precise factory diagnostics.

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

• Check the gas cap: ensure it’s tight and undamaged — a simple reseat often clears an EVAP code within a drive cycle.
• Look for obvious signs: low oil, coolant leaks, or smoke; address any safety hazards immediately and stop driving if the car behaves dangerously.
• Note recent fuel, performance, or noise changes — this information helps technicians pinpoint likely causes faster.
• If the light is flashing, minimize driving and bring the vehicle to our dealership for urgent inspection to avoid further damage.
• For warranty protection and long-term savings, let Nalley Lexus Smyrna perform the formal diagnostic scan and repairs with OEM parts and factory-trained staff.

How long does a check engine light service take?

• Initial diagnostic scan typically takes 30–60 minutes to read codes, perform basic checks, and explain findings to you.
• Minor fixes (e.g., gas cap, sensor swap) can often be completed the same day; more involved repairs may require parts ordering and take several hours to a day.
• Complex issues like catalytic converter replacement or intermittent misfires can extend service to multiple days depending on parts lead time.
• Nalley Lexus Smyrna prioritizes transparent timelines, often delivering faster, more reliable service than many independent shops due to direct OEM parts access and factory-trained technicians.
• Remember: warranty-covered repairs must be done at a certified dealership to retain coverage and ensure long-term savings and protection.

How much does a check engine light diagnostic cost for a 2016 Lexus LS 460?

• Diagnostic scan fees vary, but Nalley Lexus Smyrna offers competitive rates and promotions; the scan quickly identifies trouble codes and recommended repairs.
• Many issues are inexpensive to resolve (tightening or replacing a gas cap), while sensor or ignition repairs can range modestly and catalytic converter work is pricier if required.
• Choosing our dealership often costs less than independent shops over time because accurate diagnosis and OEM parts prevent repeat visits and costly follow-up repairs.
• Warranty-covered diagnostics and repairs must be performed at a certified dealership; using Nalley Lexus Smyrna protects your warranty and yields immediate and long-term savings.
• Contact our service team for current diagnostic pricing and available service specials tailored to your 2016 Lexus LS 460 in Smyrna, GA.