Frequently Asked Questions

How much does a check engine light diagnostic cost for a 2026 Lexus RZ?

• Costs vary by diagnosis complexity; many scans and an initial inspection are competitively priced and transparently presented before work begins.
• Nalley Lexus Smyrna often costs less than independent shops because our factory-trained technicians identify root causes faster, reducing repeat visits and long-term expense.
• Immediate savings come from accurate diagnostics and genuine parts; long-term savings come from avoiding cascading failures that become costlier over time.
• Remember: any repairs covered under warranty must be completed at a certified dealership to preserve coverage and ensure proper parts and procedures.

What does it mean when the check engine light comes on in a 2026 Lexus RZ?

• For an electric vehicle like the 2026 Lexus RZ, the warning can indicate issues with the high-voltage battery, inverter/drive system, charging equipment, or supporting electrical systems.
• It can also signal less critical problems such as 12V battery faults, sensor errors, or software notifications that still need prompt diagnosis.
• Dash messages and vehicle behavior (reduced power, charging faults) help prioritize urgency; clear diagnostics at our dealership determine if immediate action or scheduled service is needed.
• Timely dealer diagnosis protects warranty eligibility and prevents small faults from turning into costly repairs.

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

• Check your instrument cluster for any specific alerts or messages—EVs often display targeted warnings (charging, inverter, battery) that guide the next steps.
• Verify the charging connector and charging status if the vehicle was plugged in; a loose or damaged connector can trigger a warning.
• Note any changes in performance, noises, or loss of drive and report them to the service advisor—this information speeds diagnosis at the dealership.
• If the vehicle shows critical warnings or reduced power, stop driving and contact Nalley Lexus Smyrna for immediate inspection or towing to protect the vehicle and warranty.

What is the most common reason for check engine light on a 2026 Lexus RZ?

• Common causes for an EV include battery management system alerts, 12V battery faults, sensor/communication errors, or charging system interruptions.
• Software or firmware updates and sensor calibrations are frequent, fixable reasons that our Lexus-trained technicians can address quickly and correctly.
• Addressing these issues early at Nalley Lexus Smyrna often avoids secondary damage that leads to higher repair costs down the line.
• Warranty-covered diagnostics and repairs must be performed at a certified dealership to keep coverage intact and ensure genuine parts are used.

How long does a check engine light service take?

• Initial diagnostic scans and a technician inspection often take 30–90 minutes, depending on symptom detail and vehicle state.
• If repairs are straightforward—software update, sensor replacement, or 12V battery service—work may be completed the same day.
• More complex high-voltage or drivetrain repairs can require parts ordering and extended service time; we provide clear estimates before work begins.
• Nalley Lexus Smyrna prioritizes efficiency: factory-trained techs, OEM tools, and streamlined parts access minimize downtime and overall cost compared with repeated independent attempts.