Frequently Asked Questions

What is the most common reason for check engine light on a 2024 Lexus TX?

• Loose or damaged gas cap causing an EVAP leak — an easy fix that often clears the light.
• Faulty oxygen (O2) sensors or mass airflow sensors impacting fuel mixture and emissions.
• Ignition issues like worn spark plugs or coil faults causing misfires that harm performance and economy.
• EVAP system faults or small vacuum leaks triggering emissions codes; dealership diagnostics locate exact causes.
• Choosing our dealership often costs less than independent shops in the long run thanks to accurate diagnostics, correct repairs, and factory expertise.

What does it mean when the check engine light comes on in a 2024 Lexus TX?

• It signals the vehicle’s onboard diagnostics detected an emissions or engine performance issue that needs attention.
• Causes range from minor (gas cap, sensor) to serious (misfire, catalytic converter) — severity determines urgency.
• A flashing light means a severe condition; steady light still needs timely diagnosis to avoid bigger repairs.
• Our factory-trained technicians provide accurate scans and explain repair options, highlighting immediate and long-term savings.
• Warranty-covered repairs must be performed at a certified dealership to maintain coverage and proper record-keeping.

How long does a check engine light service take?

• Initial code scan and inspection commonly take 30–90 minutes, depending on symptoms and vehicle access.
• If further testing or parts are required, total repair time varies from a few hours to multiple days for complex jobs.
• We prioritize transparent timelines and can often perform same-day diagnostics; detailed repair estimates follow once codes are confirmed.
• Using our dealership saves time and money long term: accurate diagnostics prevent repeat visits and protect warranty coverage.
• Contact us to schedule a prompt inspection—book via our service specials page or call Nalley Lexus Roswell.

How much does a check engine light diagnostic cost for a 2024 Lexus TX?

• Diagnostic fees typically range $100–$200, depending on the depth of testing; we provide a clear estimate before work begins.
• If the issue is covered under warranty, repairs must be completed at a certified dealership to preserve coverage—this often reduces your out-of-pocket cost.
• Choosing our dealership frequently costs less than independent shops overall because our diagnostics are precise and repairs are done right the first time.
• We explain immediate and long-term savings, including improved fuel economy and avoided damage to downstream components like the catalytic converter.
• Ask about appointment availability and bundled service offers on our Service Specials page.

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

• Check the gas cap: a loose or cracked cap is a common, quick fix that can clear EVAP system codes.
• Note any symptoms—loss of power, rough idle, or fuel smell—and relay them to our technicians to speed diagnosis.
• Avoid heavy load driving if the light is flashing; schedule an immediate inspection at our dealership to prevent further damage.
• For warranty or complex concerns, bring your 2024 Lexus TX to Nalley Lexus Roswell so certified technicians can diagnose and complete any covered repairs.
• Use our online service resources to schedule or learn more: Service Specials and Trade In.