Frequently Asked Questions

How long does a check engine light service take?

• Most diagnostics for a 2023 Lexus RX 350h take 30–90 minutes, depending on symptoms and required testing.
• If repairs are needed, our team will provide an immediate estimate and timeline; many common fixes are completed same day.
• We often cost less than independent shops while delivering factory-level service; immediate and long-term savings come from correct diagnosis, genuine parts, and warranty protection.
• Repairs covered under warranty must be performed at a certified dealership to preserve coverage and ensure proper documentation.

What does it mean when the check engine light comes on in a 2023 Lexus RX 350h?

• A check engine light indicates the on-board diagnostics (OBD-II) detected an issue — from emissions to ignition, fuel, or sensor faults.
• It can be a minor item like a loose cap or a more serious engine or emissions problem requiring immediate attention.
• Our certified technicians read codes with OEM scanners, provide clear explanations, and recommend the most cost-effective repairs.
• Choosing Nalley Lexus Roswell often yields lower overall cost than independent shops because we diagnose right the first time and protect warranty coverage.

What is the most common reason for check engine light on a 2023 Lexus RX 350h?

• Common causes include loose/faulty gas caps, oxygen sensor issues, catalytic converter efficiency, or intermittent misfires.
• A simple gas cap fix can clear the code, while sensors or emissions parts may require parts and labor to restore performance.
• We prioritize repairs that optimize fuel economy and long-term reliability to save you money over time.
• Warranty-covered repairs must be performed at a certified dealership to ensure coverage and proper OEM procedures.

How much does a check engine light diagnostic cost for a 2023 Lexus RX 350h?

• Diagnostic fees vary; at Nalley Lexus Roswell we price diagnostics competitively and often less than independent shops while offering factory-trained technicians.
• We offer clear estimates before work begins and explain immediate and long-term savings from correct repairs and OEM parts.
• If the repair is covered by warranty, it must be completed at a certified dealership to maintain coverage and documentation.
• Choosing the dealership can avoid repeat visits and costly follow-ups, saving you money and time.

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

• First, check the fuel cap for tightness — it’s a common, quick fix that may extinguish the light after a few drive cycles.
• If the light stays on, schedule a diagnostic; our OEM scanner reads codes and pinpoints the root cause for your 2023 Lexus RX 350h.
• Using Nalley Lexus Roswell avoids unnecessary parts replacement and protects warranty coverage—repairs under warranty must be handled at a certified dealership.
• We provide transparent costs, genuine parts, and service records that preserve vehicle value and deliver long-term savings.