Frequently Asked Questions

How much does a check engine light diagnostic cost for a 2024 Lexus LS 500h?

• Diagnostic fees vary; at Nalley Lexus Roswell we provide transparent pricing and a thorough OBD-II scan plus inspection to identify root causes.
• Our dealership often costs less than independent shops when you factor immediate accuracy, genuine parts, and long-term savings from avoiding repeat repairs.
• If repairs are covered under warranty, they must be performed at a certified dealership to remain valid—our factory-trained technicians handle those repairs.
• After diagnosis we provide a clear estimate and explain options to minimize out-of-pocket expense, including service specials: https://www.nalleylexusroswell.com/specials/service.htm.

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

• Start with basic checks: ensure the gas cap is tight and the vehicle has the recommended premium unleaded fuel for the 2024 Lexus LS 500h.
• Look for obvious symptoms—loss of power, rough idle, or smoke—and avoid prolonged driving if severe.
• Even if a simple fix is suspected, have a certified dealer scan the vehicle; warranty-covered work must be completed at a certified dealership to preserve coverage.
• Bring your LS to Nalley Lexus Roswell for a precise diagnosis and recommended repairs; learn about our trade and inventory options at https://www.nalleylexusroswell.com/used-inventory/index.htm.

What does it mean when the check engine light comes on in a 2024 Lexus LS 500h?

• The light indicates the vehicle’s onboard diagnostics detected an emissions or performance issue—from minor faults to conditions that can harm the engine or catalytic converter.
• Common causes include sensor faults, misfires, fuel system problems, or evap leaks; the severity ranges from simple to urgent.
• Immediate dealer diagnostics prevent compounding damage—doing repairs at a certified dealership often saves money over time versus repeated independent attempts.
• Nalley Lexus Roswell uses factory-trained technicians and OEM parts to restore performance and keep warranty protections intact: https://www.nalleylexusroswell.com/service/schedule.htm

How long does a check engine light service take?

• Initial diagnostic scans typically take 30–60 minutes, depending on system checks and road testing for intermittent faults.
• Repair time varies: simple sensor or gas cap fixes may be done same day; complex repairs like catalytic converter replacement require more time and parts ordering.
• At Nalley Lexus Roswell we prioritize accurate diagnosis to avoid unnecessary repairs—this saves you both time and money in the long run.
• We provide realistic repair timelines and use factory-trained technicians to ensure efficient, lasting results; schedule or view service specials at https://www.nalleylexusroswell.com/specials/service.htm.

What is the most common reason for check engine light on a 2024 Lexus LS 500h?

• Common triggers include oxygen sensor faults, misfires, catalytic converter efficiency issues, and evap system leaks—each will set an OBD-II code for diagnosis.
• Left unchecked, these can increase fuel use, reduce performance, and lead to expensive repairs such as catalytic converter replacement.
• Having repairs done at a certified dealership often costs less overall due to accurate diagnosis, OEM parts, and warranty protection that independent shops can’t provide.
• Bring your LS to Nalley Lexus Roswell for prompt diagnostics and long-term savings; check our service and maintenance offerings at https://www.nalleylexusroswell.com/specials/service.htm.