Frequently Asked Questions

What does it mean when the check engine light comes on in a 2020 Lexus RX 350L?

• It indicates the vehicle's onboard diagnostics detected an issue with emissions, engine, or drivetrain systems—ranging from a loose gas cap to a failing oxygen sensor.
• At Herb Chambers Lexus of Hingham in Hingham, MA, our certified technicians use factory-grade tools to read stored codes and interpret live-data for accurate diagnosis.
• Early diagnosis at our dealership can prevent minor issues from becoming major repairs, saving you money in both immediate costs and long-term maintenance.
• We offer transparent estimates, OEM parts, and covered-warranty repairs. Note: any repairs covered under warranty must be performed at a certified dealership to maintain coverage.
• Ready to get it checked? You can schedule service online now. We also have current service specials.

How long does a check engine light service take?

• Simple diagnostics may take 30–60 minutes; more complex repairs can take several hours depending on parts and inspection needs.
• At Herb Chambers Lexus of Hingham, we prioritize quick turnaround using efficient workflows and OEM tooling so you spend less time waiting and more time driving.
• We provide upfront timelines and regular progress updates so you understand both immediate and long-term savings from prompt, correct repairs.
• We offer service financing so you can get service now and pay later, and our service advisors will review available options and any applicable loyalty or promotional discounts.
• To reserve a convenient appointment, schedule service online and check our service specials.

How much does a check engine light diagnostic cost for a 2020 Lexus RX 350L?

• Diagnostic pricing varies by the complexity of the fault, but our competitive diagnostic rates start near local market lows—delivering expert, factory-trained service that often costs less than independent shops when you factor in accuracy and warranty protection.
• Choosing Herb Chambers Lexus of Hingham delivers immediate savings through accurate diagnosis (avoiding repeat work) and long-term savings through OEM repairs that extend vehicle life.
• We provide transparent estimates before repairs begin, and warranty-covered work must be completed at a certified dealership to preserve coverage and value.
• Ask our service team about special diagnostic offers and financing options so you can address issues today and pay over time.
• Book a time that fits your schedule: schedule service and review current service specials.

What is the most common reason for check engine light on a 2020 Lexus RX 350L?

• The most frequent causes include a loose or faulty gas cap, failed oxygen sensor, or issues with the catalytic converter—each impacting emissions or fuel economy.
• Our technicians at Herb Chambers Lexus of Hingham diagnose the root cause using OEM scanners, so repairs are targeted and durable rather than guesswork.
• Prompt dealership service preserves fuel efficiency, lowers emissions penalties, and prevents more costly drivetrain or catalytic system damage down the road.
• We back repairs with manufacturer-grade parts and clear warranty terms; remember warranty repairs must be done at certified dealerships.
• Schedule a diagnostic visit quickly by clicking to schedule service and check our service specials for savings.

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

• Start with simple checks: ensure the gas cap is tightened and inspect for obvious fluid leaks or smells. These quick checks often resolve the issue.
• If the light persists, bring your 2020 Lexus RX 350L to Herb Chambers Lexus of Hingham where our certified technicians will retrieve diagnostic trouble codes and explain required repairs clearly and affordably.
• We emphasize transparent pricing, OEM parts, and long-term value—so minor fixes don’t escalate into larger repairs, which saves you money and time.
• We also offer service financing to help you address needs immediately and pay over time, plus curated service specials for additional savings.
• Click here to schedule service with our Hingham service team today.