Frequently Asked Questions

How long does a check engine light service take?

• Typical diagnostic scan for the 2025 Lexus TX 350 takes 30–60 minutes; complete repairs vary by the issue.
• Minor fixes such as resetting codes or tightening a gas cap can be completed same day; parts or complex repairs may need more time.
• Nalley Lexus Smyrna prioritizes transparent estimates and efficient scheduling so you know timelines up front.
• Choosing our dealership often costs less than independent shops when factoring immediate fixes, genuine parts, and fewer return visits.
• Warranty-covered repairs must be performed at a certified dealership to preserve coverage and long-term savings.

What does it mean when the check engine light comes on in a 2025 Lexus TX 350?

• The light signals the engine management system detected an issue — from simple emissions faults to performance-affecting problems.
• Common categories include emissions system faults, ignition/misfire, fuel delivery, or sensor failures that affect drivability or efficiency.
• It does not always mean immediate danger, but it can indicate problems that will reduce fuel economy or cause further damage if ignored.
• Our factory-trained technicians use OEM diagnostics to identify root causes quickly and recommend cost-effective, warranty-safe repairs.
• Addressing issues early at our dealership often lowers repair costs now and prevents larger expenses later.

How much does a check engine light diagnostic cost for a 2025 Lexus TX 350?

• Diagnostic fees vary, but Nalley Lexus Smyrna offers competitive pricing and frequent service specials to reduce upfront cost.
• Our diagnostics include OEM-level scans and expert analysis by factory-trained technicians for accurate recommendations.
• We often cost less than independent shops when you consider accurate diagnosis, genuine parts, and fewer repeat visits.
• Immediate savings come from correct first-time repairs; long-term savings come from preserving vehicle value and preventing cascading failures.
• Any repair covered under warranty must be completed at a certified dealership to keep coverage valid and protect your investment.

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

• Safely pull over and note any change in performance, smells, or warning indicators; if the light is flashing, stop driving and seek immediate service.
• Check the fuel cap for a loose or damaged seal — a simple fix that often resolves emission-related codes.
• Review the instrument panel for related alerts (oil, temperature) and note any symptoms to tell our technicians.
• Schedule a diagnostic with Nalley Lexus Smyrna so factory-trained techs use OEM tools to find the true cause and apply correct repairs.
• Using our certified service preserves warranty coverage and delivers the best immediate and long-term value.

What is the most common reason for check engine light on a 2025 Lexus TX 350?

• Common causes include a loose fuel cap, oxygen sensor faults, catalytic converter issues, or ignition/misfire events.
• Sensors and emissions components often trigger codes that affect fuel economy and emissions compliance if left unaddressed.
• Ignoring these codes can lead to more expensive repairs, reduced performance, and failed emissions tests.
• Our dealership identifies whether the issue is a simple fix or requires replacement of genuine Lexus parts to ensure lasting repairs.
• Performing covered repairs at a certified dealership protects warranty coverage and provides superior long-term savings compared with repeated, partial fixes.