Frequently Asked Questions

What does it mean when the check engine light comes on in a 2018 Hyundai Sonata Hybrid?

• It signals your vehicle's onboard diagnostics detected an issue — anything from a loose gas cap to emissions or ignition problems.
• At Arapahoe Hyundai in Colorado, our certified technicians use OEM-grade scanners to read codes and explain the precise cause and repair options.
• We often cost less than independent shops while delivering factory-trained service, genuine parts, and clear estimates that emphasize immediate and long-term savings.
• Warranty-covered repairs must be performed at a certified dealership to preserve coverage — we’ll confirm warranty status and next steps.
• To get an accurate diagnosis, schedule service and take advantage of current service specials.
• We offer service financing so you can get service now and pay later for peace of mind and vehicle longevity.

How long does a check engine light service take?

• Most diagnostics are completed within one business hour; repairs vary by issue but our shop prioritizes fast turnarounds.
• A single diagnostic visit identifies codes, required parts, and labor — our advisors provide a transparent time estimate before work begins.
• Because Arapahoe Hyundai stocks many OEM parts and uses factory procedures, we reduce both downtime and repeat visits.
• We highlight immediate cost savings (accurate repairs) and long-term savings (preventative care and warranty protection) compared with guesswork repairs.
• You can quickly schedule appointment online and view current service specials to lower your total cost.
• Service financing is available to help you handle urgent repairs without delay.

How much does a check engine light diagnostic cost for a 2018 Hyundai Sonata Hybrid?

• Diagnostic pricing varies; at Arapahoe Hyundai we provide competitive, itemized diagnostics that often cost less than independent shops while delivering higher-value factory service.
• Your final price depends on code complexity and whether additional tests or parts are needed; we explain immediate and long-term savings so you can make an informed decision.
• If repair is required, we offer OEM parts, certified technicians, and warranty-backed work — and we’ll apply available service specials where applicable.
• Repairs covered under warranty must be performed at a certified dealership to preserve coverage; we’ll verify that for you during diagnosis.
• Ask about service financing to spread payments while getting timely repairs that protect vehicle value and reliability.

What is the most common reason for check engine light on a 2018 Hyundai Sonata Hybrid?

• Common causes include oxygen sensor faults, catalytic converter issues, loose gas caps, and ignition or fuel system faults.
• For hybrid models like the 2018 Hyundai Sonata Hybrid, battery state, charging system, and related sensors can also trigger codes — our team is trained for hybrid-specific diagnostics.
• Addressing codes early at Arapahoe Hyundai saves you money over time by avoiding collateral damage and preserving fuel efficiency.
• We recommend prompt inspection at a certified dealership to ensure OEM parts and warranty protection where applicable.
• To protect your hybrid system and long-term ownership costs, schedule service and review available service specials.

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

• Start with the basics: ensure the gas cap is tightened correctly — a loose cap is a common and easy fix.
• If tightening the cap doesn’t clear the light, bring your vehicle to Arapahoe Hyundai for a scanner check so we can read trouble codes and advise precisely.
• Our certified technicians will outline immediate repairs, long-term implications, and warranty coverage while highlighting potential savings of dealership service.
• We offer transparent estimates, OEM parts, and service financing so you can address repairs promptly and protect vehicle value.