Frequently Asked Questions

How much does a check engine light diagnostic cost for a 2026 Lexus TX?

• Typical diagnostic fees generally range from $90–$200 depending on inspection depth and whether live-road testing or advanced scanner work is required.
• At Nalley Lexus Smyrna, our diagnostics are performed by factory-trained technicians using Lexus-specific tools to find root causes faster, often reducing overall repair bills.
• Because we use OEM parts and exact repair procedures, customers frequently see immediate and long-term savings versus pay-as-you-go repairs from less specialized shops.
• If a repair is covered under warranty, it must be performed at a certified dealership to keep coverage valid—our team handles warranty paperwork to save you time and expense.

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

• Start with obvious items: secure gas cap, correct fuel grade (premium unleaded recommended), and any recent fill-ups or service events.
• Next, note engine behavior—poor running, loss of power, or unusual noises—and share those details with our technicians for faster diagnosis.
• Bring your 2026 Lexus TX to Nalley Lexus Smyrna for a scan; our technicians read manufacturer codes immediately and explain immediate steps and cost estimates.
• Remember, warranty-covered repairs must be completed at a certified dealership to remain valid—choosing our service center protects your coverage and long-term value.

What does it mean when the check engine light comes on in a 2026 Lexus TX?

• The light signals that the vehicle’s onboard diagnostics detected an emissions, fuel, ignition, or sensor-related issue—ranging from minor to serious.
• Codes can indicate problems like oxygen sensor faults, catalytic converter issues, misfires, or evaporative emission leaks that affect performance and efficiency.
• Timely diagnosis at Nalley Lexus Smyrna reduces the chance of escalation, preserves fuel economy, and can avoid higher repair costs later.
• If covered by warranty, repairs must be performed at a certified dealership; we’ll document and process warranty claims to minimize your out-of-pocket expense.

What is the most common reason for check engine light on a 2026 Lexus TX?

• The most frequent triggers are emission-related sensors: oxygen sensors, loose or damaged gas caps, or evaporative emission (EVAP) system leaks.
• Other common causes include faulty spark plugs or ignition coils, which lead to misfires and reduced fuel economy if not addressed.
• Early diagnosis at Nalley Lexus Smyrna often resolves issues with minimal parts and labor, delivering immediate and long-term savings compared with prolonged, piecemeal repairs.
• For any warranty-covered items, repairs must be completed at a certified dealership to retain your coverage—our factory-trained technicians manage that process for you.

How long does a check engine light service take?

• Basic diagnostics typically take 1–2 hours; if additional testing, road checks, or parts are needed, total repair time can extend to a day or more.
• Minor fixes—like tightening a gas cap or replacing a simple sensor—are often same-day services at our Smyrna facility.
• For more complex issues or when parts must be ordered, we provide clear estimates and timeline expectations so you can plan accordingly.
• Using Nalley Lexus Smyrna often saves time and money: our OEM parts inventory and Lexus-specific tools streamline repairs and protect warranty coverage, which requires service at a certified dealership.