Frequently Asked Questions

What does it mean when the check engine light comes on in a 2012 Lexus RX 350?

• It indicates the vehicle's onboard diagnostics detected an issue — anything from a loose gas cap to an emissions or ignition fault. Our technicians at Stevinson Lexus of Frederick in Frederick, CO will diagnose the exact code and recommend repairs.
• We often cost less than independent shops while delivering dealer-level service, factory-trained technicians, and OEM parts. That immediate savings plus long-term avoidance of cascading failures reduces total ownership cost.
• Repairs covered under warranty must be performed at a certified dealership to keep coverage valid — our service team honors OEM warranties and documents repairs accordingly.
• We offer service financing so you can get necessary repairs now and pay later. To book, please schedule service.

How long does a check engine light service take?

• Most diagnostic checks take under an hour; simple fixes like sensor replacement or tightening a gas cap can be completed the same day.
• Complex repairs depend on parts and required labor — our service advisors provide transparent time estimates and will notify you of any delays.
• Using OEM parts and factory-trained technicians ensures the job is done right the first time, minimizing repeat visits and saving you time and money.
• To confirm availability and times, schedule appointment online or review current service specials before you arrive.

How much does a check engine light diagnostic cost for a 2012 Lexus RX 350?

• Diagnostic pricing varies by issue; typical dealer diagnostics are competitively priced and often cost less than independent shops once you factor in accuracy, warranty protection, and OEM parts.
• We emphasize immediate and long-term savings — accurate diagnostics prevent unnecessary parts replacement and future breakdowns, protecting your investment in the 2012 Lexus RX 350.
• If repairs are needed, warranty-covered work must be performed at a certified dealership to maintain coverage. We also offer service financing to split payments over time.
• Check our service specials for current offers and schedule service to get an accurate quote and fast turnaround.

What is the most common reason for check engine light on a 2012 Lexus RX 350?

• Common causes include O2 sensor failure, catalytic converter issues, loose gas cap, or ignition misfires. Each can lead to reduced fuel economy or more serious engine damage if ignored.
• Our certified technicians at Stevinson Lexus of Frederick identify root causes and recommend OEM repairs that protect resale value and engine longevity.
• Choosing dealer service often means lower overall cost because accurate diagnostics and quality repairs prevent repeat visits and bigger bills down the road.
• Remember: warranty repairs should be completed at a certified dealership, and you can schedule appointment online and review service specials to save.

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

• Start with simple checks: make sure the gas cap is tight. If the cap is secure and the light persists, professional diagnostics are recommended to prevent hidden damage.
• At Stevinson Lexus of Frederick we use factory diagnostic tools tailored for the 2012 Lexus RX 350 to quickly identify the code and recommend the correct repair.
• We provide transparent estimates, OEM parts, and technician-certified workmanship — ensuring savings both now and long-term by preventing misdiagnosis and repeated repairs.
• If you need immediate attention, schedule service or check current service specials to see available discounts and financing options.