Frequently Asked Questions

What does it mean when the check engine light comes on in a 2016 Lexus RX 350?

• It signals that the vehicle’s onboard diagnostics detected an issue—anything from a loose gas cap to an emissions sensor or ignition misfire. Our certified technicians at Herb Chambers Lexus of Hingham use OEM diagnostic tools to pinpoint the code and the root cause quickly.
• Common triggers include oxygen sensor failure, catalytic converter issues, EVAP leaks, or ignition coil faults. Addressing codes promptly preserves fuel economy, avoids long-term damage, and saves money over time.
• We explain repair options, parts, and warranties clearly. Repairs covered under warranty must be performed at a certified dealership to remain valid, and our team will confirm coverage before any work.
• To get a professional evaluation, schedule service online or review our current service specials.

How long does a check engine light service take?

• Typical diagnostics are completed in under an hour; many repairs are same-day depending on parts and complexity. For a 2016 Lexus RX 350, simple fixes like gas cap or sensor replacement are fast—more involved work may require additional time for parts or inspections.
• Herb Chambers Lexus of Hingham prioritizes quick turnaround with factory-trained technicians, OEM parts, and a streamlined workflow so you get back on the road sooner.
• We offer service financing so you can get needed repairs now and pay over time, and our team will outline immediate and long-term savings through improved fuel economy and extended vehicle life.
• To confirm availability and book a convenient slot, schedule appointment.

How much does a check engine light diagnostic cost for a 2016 Lexus RX 350?

• Diagnostics at Herb Chambers Lexus of Hingham typically start from approximately $93.45 for a thorough scan and assessment. That price reflects our investment in OEM-grade scanners and certified technicians who deliver accurate results that save you money by avoiding unnecessary repairs.
• Our dealership often costs less than independent shops when factoring in diagnostic accuracy, genuine Lexus parts, technician certification, and long-term savings from proper repairs and warranty protection.
• Ask about our service specials and financing options so you can address issues now and spread payments over time.
• To get an exact estimate for your 2016 Lexus RX 350, schedule service or call Herb Chambers Lexus of Hingham.

What is the most common reason for check engine light on a 2016 Lexus RX 350?

• The most frequent causes are faulty oxygen sensors, loose or faulty gas caps, and ignition coil or spark plug issues. Left unaddressed, these can reduce MPG, increase emissions, and lead to more costly repairs like catalytic converter replacement.
• Our technicians in Hingham, MA, use OEM diagnostics to identify the true cause and provide a clear repair plan that prioritizes longevity and value.
• We emphasize transparency: you’ll receive a written estimate, warranty details, and options to use certified parts. Any warranty-covered repairs must be completed at certified dealerships to remain valid.
• Check our service specials for savings and schedule service when it’s convenient.

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

• Begin with simple checks: ensure the gas cap is tight and inspect basic fluids. A loose gas cap is a common, low-cost trigger that many owners can remedy immediately.
• If the light persists or flashes, pull over safely and contact Herb Chambers Lexus of Hingham. A flashing light often indicates a severe condition that requires immediate attention to prevent engine damage.
• We recommend professional diagnostics using OEM tools rather than guessing repairs. Our service team will explain immediate fixes versus recommended long-term solutions, highlighting cost savings and warranty implications.
• When you’re ready, schedule service or browse current service specials to reduce cost.

2016 Lexus RX 350 Check Engine Light Reset

The process of resetting the check engine light on a 2016 Lexus RX 350 should start with a full diagnostic rather than a simple reset. A light that returns after a reset indicates the underlying fault remains unresolved and can lead to worsening performance, reduced fuel economy, or even engine damage. At Herb Chambers Lexus of Hingham, our certified technicians use Lexus-approved scanners and OEM diagnostic procedures to interpret codes, isolate root causes, and recommend corrective action. We provide transparent estimates that include parts, labor, and warranty coverage so you understand immediate costs and long-term savings. Using genuine Lexus parts preserves vehicle integrity and supports any warranty coverage—repairs under warranty must be performed at a certified dealership to remain valid. For owners in Hingham and the South Shore, our service center delivers fast, reliable care with amenities designed for convenience and comfort. Ask about our service financing options to get repairs done today and pay over time. To arrange diagnostics and a proper reset, schedule service and check current service specials for additional savings.

Check Engine Light Flashing

A flashing check engine light on a 2016 Lexus RX 350 is a serious warning that should not be ignored. This behavior often signals active misfires, which can overheat exhaust components and damage the catalytic converter if driven long distances. Herb Chambers Lexus of Hingham recommends pulling over safely and contacting our service center immediately for a prioritized diagnostic slot. Our factory-trained technicians will perform a rapid yet thorough inspection using OEM tools, and we'll explain necessary repairs and preventive measures in plain language. We also highlight immediate and long-term cost benefits—prompt repairs protect fuel economy and avoid major component failures. Customers can take advantage of our service specials, and we offer service financing to make urgent repairs manageable. For Hingham drivers seeking trusted service and fast turnaround, our dealership is equipped to handle the issue correctly the first time. To protect your vehicle and avoid more costly repairs, schedule service online or call Herb Chambers Lexus of Hingham today.

2016 Lexus RX 350 Check Engine Light Codes

Common codes for a 2016 Lexus RX 350 include P0420 (catalyst system efficiency), P0131/P0132 (oxygen sensor), P0300 (random/multiple cylinder misfire), and P0456 (EVAP small leak). Left unaddressed, each presents specific risks and costs: P0420 may lead to expensive catalytic converter replacement; oxygen sensor failures reduce MPG and increase emissions; misfires can damage pistons and catalytic systems; EVAP leaks can cause failed emissions tests. At Herb Chambers Lexus of Hingham, we diagnose codes accurately and explain repair urgency and cost implications so you can choose the right path. Our certified Lexus technicians use OEM parts and follow factory procedures, which often results in lower lifetime ownership costs compared with piecemeal fixes. We provide transparent estimates, warranty confirmation, and access to service financing to spread payments when necessary. For drivers in Hingham and surrounding communities, our convenient location, quick service lanes, and genuine parts inventory make getting back on the road simple. To arrange a diagnostic or learn about current incentives, schedule appointment and view service specials.