Frequently Asked Questions

What is the most common reason for check engine light on a 2015 Lexus LS 600h L?

• Common causes include engine misfires, oxygen sensor failure, catalytic converter inefficiency, and EVAP system leaks.
• Left unaddressed, misfires and bad catalytic converters can lead to costly secondary damage and reduced fuel economy.
• Nalley Lexus Roswell often delivers lower overall costs than independent shops by diagnosing correctly the first time and avoiding repeat repairs.
• Remember: any repair covered under warranty must be completed at a certified dealership to preserve coverage.

What does it mean when the check engine light comes on in a 2015 Lexus LS 600h L?

• It signals that the vehicle’s onboard diagnostics detected an emissions, engine, or hybrid-system issue—ranging from a loose fuel cap to a serious misfire.
• Hybrid system alerts or battery-related codes require specialized hybrid diagnostics available at our dealership.
• We use OEM-grade scanners to read codes and recommend repairs that protect long-term value and efficiency.
• Repairs covered by warranty must be performed at a certified dealership to ensure coverage and proper system calibration.

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

• Quick checks: ensure the gas cap is tightened, confirm fuel quality, and note any unusual noises, smells or drivability issues.
• If the vehicle shows limp mode, poor acceleration, or a flashing light, stop driving and contact the dealership immediately.
• Bring the vehicle to Nalley Lexus Roswell for a proper diagnostic scan—this prevents masking symptoms and protects your warranty.
• Our certified technicians provide transparent estimates showing immediate savings and reduced long-term repair costs compared with repeat fixes.

How much does a check engine light diagnostic cost for a 2015 Lexus LS 600h L?

• Typical diagnostic scans range from $99–$199 depending on complexity; final pricing is confirmed after a full OEM diagnostic.
• Nalley Lexus Roswell often costs less than many independent shops when factoring accurate diagnosis, genuine parts, and fewer repeat visits.
• Immediate savings come from correct first-time repairs; long-term savings stem from preserving hybrid components and catalytic systems.
• Note: any repairs covered under warranty must be carried out at a certified dealership to maintain coverage and proper record-keeping.

How long does a check engine light service take?

• Basic code read and initial assessment usually takes 30–60 minutes; repairs vary from under an hour to multiple days if parts are required.
• If a required part is in stock we often complete service the same day; complex hybrid or drivetrain repairs may require additional time for parts and calibration.
• Scheduling with Nalley Lexus Roswell optimizes turnaround—factory-trained technicians and OEM parts reduce repeat visits and overall downtime.
• Remember: warranty-covered repairs must be done at a certified dealership to ensure proper completion and continued coverage.