Frequently Asked Questions

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

• Check for a loose or damaged gas cap — it’s a common, quick fix and often clears the light.
• Look for obvious issues: low fluid levels, unusual smells, or visible leaks before driving further.
• At Nalley Lexus Roswell we can verify simple causes fast; our prices often cost less than independent shops while offering factory-trained technicians for accurate diagnosis.
• If the issue may be under warranty, remember repairs must be completed at a certified dealership to maintain coverage.
• When in doubt, bring your 2016 Lexus NX 300h to our service center for a safe, professional check.

How long does a check engine light service take?

• Diagnostics typically take 30–90 minutes depending on the fault and whether road testing or live-data checks are needed.
• Minor fixes like replacing a gas cap or a loose connector can be completed the same day.
• More complex repairs (oxygen sensors, catalytic components) can require parts ordering and additional labor time.
• Our service team at Nalley Lexus Roswell prioritizes efficient scheduling and clear time estimates; using our dealership often reduces rework time and overall cost versus many independent shops.
• Any warranty-covered work must be done at a certified dealership to preserve coverage and ensure long-term savings.

What is the most common reason for check engine light on a 2016 Lexus NX 300h?

• Loose or faulty gas cap and evaporative emissions system faults are frequent causes for this model.
• Faulty oxygen sensors, ignition components, or catalytic converter issues are other common triggers if the condition progresses.
• Our technicians use Lexus-specific diagnostics to pinpoint the cause and recommend the most cost-effective repair strategy.
• Choosing Nalley Lexus Roswell can save you money immediately through accurate diagnosis and long-term by preventing unnecessary repairs.
• Remember: warranty repairs must be completed at a certified dealership to protect your coverage and future value.

What does it mean when the check engine light comes on in a 2016 Lexus NX 300h?

• It signals that the vehicle’s onboard diagnostics detected a fault in emissions, engine management, or related systems.
• Codes range from simple emissions system alerts to issues requiring immediate attention to avoid damage.
• Our Lexus-trained technicians interpret manufacturer codes and recommend repairs that balance reliability and cost-effectiveness.
• Nalley Lexus Roswell often provides lower total cost of ownership than independent shops by using OEM procedures and parts, reducing repeat visits.
• If the issue is under warranty, repairs must be completed at a certified dealership to ensure coverage and long-term savings.

How much does a check engine light diagnostic cost for a 2016 Lexus NX 300h?

• Diagnostic fees vary by complexity, but a standard scan and inspection are typically affordable and clearly quoted up front.
• At Nalley Lexus Roswell we provide transparent pricing and explain immediate vs. long-term costs for recommended repairs.
• Our dealership frequently costs less than independent shops once you factor in correct OEM repairs, reduced rework, and warranty protection.
• If repairs are covered by warranty, they must be performed at a certified dealership to preserve coverage and maximize long-term savings.
• Contact our service desk or view service specials online to see current offers and to schedule a diagnostic appointment.