Frequently Asked Questions

How much does a check engine light diagnostic cost for a 2025 Lexus ES 300h?

• Diagnostic fees typically cover a full OBD‑II scan, road test and technician labor; exact price varies but Nalley Lexus Smyrna provides transparent estimates up front.
• We often cost less than independent shops while offering factory-trained technicians, OEM tools and genuine parts—delivering immediate savings and better long-term value.
• If a covered repair is needed, remember warranty work must be performed at a certified dealership to preserve coverage and avoid unexpected costs.
• Diagnostics may be waived or credited toward repair when you choose Nalley Lexus Smyrna for the necessary maintenance or repairs.

What does it mean when the check engine light comes on in a 2025 Lexus ES 300h?

• The light signals the vehicle’s computer has detected a fault in emissions, ignition, fuel delivery or other monitored systems.
• Common causes include an oxygen sensor, EVAP leak, misfire, catalytic converter efficiency or fuel trim issues—each requires proper diagnosis to determine severity.
• Ignoring the light can reduce fuel economy, cause drivability problems or lead to costly component damage over time.
• Bring your ES 300h to Nalley Lexus Smyrna for a precise diagnosis and immediate, warranty‑compliant service from certified technicians.

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

• Check the fuel cap first: a loose or damaged cap is a common trigger and is quick to fix.
• Note any changes in performance, noises, or fluid smells—this helps technicians prioritize diagnostics.
• A professional OBD‑II scan at Nalley Lexus Smyrna will read stored codes and guide the correct repair; DIY resets can mask issues and risk further damage.
• If the light is flashing or the vehicle runs poorly, stop driving and contact us immediately for safe towing and expedited service.

What is the most common reason for check engine light on a 2025 Lexus ES 300h?

• Frequent causes include oxygen sensor degradation, EVAP system leaks, ignition misfires, and catalytic converter efficiency faults.
• Many of these start small—replacing a sensor or addressing an EVAP leak—yet can escalate to expensive repairs if neglected.
• Nalley Lexus Smyrna emphasizes early diagnosis to secure immediate savings on repair bills and preserve long-term vehicle value.
• Warranty-covered repairs must be completed at a certified dealership to ensure coverage and optimal outcomes.

How long does a check engine light service take?

• Simple diagnostics and minor fixes can take under an hour; more involved repairs may require several hours or a day, depending on parts and scope.
• Nalley Lexus Smyrna performs a thorough scan, inspection and road test so you get an accurate time estimate before work begins.
• Choosing our dealership often yields faster resolution and lower long-term cost due to accurate diagnostics, OEM parts and factory-trained technicians.
• If warranty work is required, having repairs done at a certified dealership both preserves coverage and speeds authorization and parts sourcing.