Frequently Asked Questions

How much does a check engine light diagnostic cost for a 2023 Lexus NX 350?

• Typical diagnostic scans range from a quick OBD-II read to a full technician evaluation; basic scans are commonly priced between $75–$150 depending on complexity.
• If repairs are required, our written estimate outlines parts and labor before work begins so you see immediate and long-term savings.
• Nalley Lexus Roswell often costs less than independent shops when factoring accurate diagnosis, genuine parts, and reduced repeat repairs.
• Repairs covered under warranty must be performed at a certified dealership to maintain coverage and documented service history.

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

• Simple checks you can do immediately: ensure the gas cap is tightened securely—loose caps commonly trigger codes.
• Visually inspect for obvious issues: fluid leaks, low oil, or disconnected hoses; note any unusual sounds or smoke.
• A temporary reset may clear the light, but a repeating code requires a diagnostic scan to prevent escalating damage and cost.
• When in doubt, bring your 2023 Lexus NX 350 to Nalley Lexus Roswell for prompt inspection and factory-level repairs.

What does it mean when the check engine light comes on in a 2023 Lexus NX 350?

• The light signals that the vehicle’s computer detected an issue—ranging from a minor emissions fault to engine misfires or sensor failures.
• Severity varies: steady light often indicates a non-emergency fault; flashing light signals active misfire or potential damage and requires immediate attention.
• Diagnostic scanning identifies trouble codes, pinpoints root causes, and prevents unnecessary parts replacement.
• For accurate repair, warranties and long-term savings are best preserved by using Nalley Lexus Roswell’s certified technicians and OEM parts.

What is the most common reason for check engine light on a 2023 Lexus NX 350?

• Common causes include a loose gas cap, oxygen sensor failure, catalytic converter issues, misfires, or evap system leaks.
• Loose gas caps and simple sensor faults are quick to diagnose and inexpensive to fix compared with deferred repairs.
• Ignoring a persistent code can lead to higher costs—catalytic converter or turbo damage is considerably more expensive.
• Nalley Lexus Roswell’s approach focuses on correct diagnosis and OEM repairs, which often yields lower lifecycle costs than repeated fixes from less specialized shops.

How long does a check engine light service take?

• Basic diagnostic scans often take 30–90 minutes; many common repairs can be completed the same day depending on parts availability.
• Complex issues (internal engine repairs, turbo work, or catalytic converter replacement) can require additional shop time—typically 1–3 days.
• At Nalley Lexus Roswell, factory-trained technicians and Lexus tools streamline diagnosis and repair, reducing downtime and long-term expense.
• Warranty repairs must be completed at a certified dealership to maintain coverage; we provide clear timelines and documented service records for each job.