Frequently Asked Questions

What does it mean when the check engine light comes on in a 2012 Hyundai Genesis Coupe?

• It signals the vehicle’s onboard diagnostics have detected an issue — anything from an emissions sensor or loose gas cap to fuel system or ignition concerns. Our certified technicians at Larry H. Miller Hyundai Peoria use OEM-grade scanners to pinpoint the fault quickly.
• Choosing our dealership often costs less than independent shops because we combine accurate diagnostics, targeted repairs, and factory parts that prevent repeat visits — delivering immediate savings and long-term value.
• If a repair is covered under warranty, it must be performed at a certified dealership to preserve coverage. Our service team will confirm warranty eligibility and explain options clearly.
• We offer service financing so you can get necessary repairs now and pay later. To book, please schedule service online or ask about current service specials.

How long does a check engine light service take?

• Diagnosis for a check engine light on a 2012 Hyundai Genesis Coupe typically takes 30–90 minutes depending on the code complexity. Our technicians prioritize fast turnarounds while ensuring thorough testing and road verification.
• Repairs vary by needed parts and labor; many common fixes are completed same day at Larry H. Miller Hyundai Peoria thanks to OEM parts availability and experienced techs.
• We provide transparent estimates up front and outline immediate and ongoing savings from proper repairs, including improved fuel economy and reduced risk of secondary damage.
• To reserve a convenient time, schedule appointment online and review current service specials to maximize value.

How much does a check engine light diagnostic cost for a 2012 Hyundai Genesis Coupe?

• Diagnostics at Larry H. Miller Hyundai Peoria are competitively priced and often less than independent shops because our process is efficient and guided by factory procedures that reduce repeat work.
• We provide a clear diagnostic fee estimate up front, explain findings in plain language, and present repair options with cost-saving OEM solutions.
• Remember: warranty-covered repairs must be completed at a certified dealership to remain valid — our advisors will confirm coverage before any work begins.
• If cost is a concern, ask about service financing and current service specials. To get started, schedule service today.

What is the most common reason for check engine light on a 2012 Hyundai Genesis Coupe?

• The most frequent triggers are oxygen sensor faults, catalytic converter issues, misfires, or EVAP system faults such as a loose or damaged gas cap. These can affect emissions and fuel economy if left untreated.
• Our certified technicians use Hyundai-specific diagnostic routines to identify root causes and prevent secondary damage—saving you money over time.
• We emphasize transparent pricing and long-term maintenance plans so the vehicle stays reliable and retains value.
• Book a visit via our online scheduler at schedule service and check current offers under service specials.

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

• First check: ensure the gas cap is secure. A loose cap can trigger EVAP codes. If the cap is tight and the light remains, bring the vehicle to our service center for a professional scan.
• At Larry H. Miller Hyundai Peoria we perform a focused scan, explain the diagnostic codes, and recommend OEM-based repairs that maximize durability and minimize long-term cost.
• We support service financing options and will verify warranty coverage when applicable — warranty repairs must be performed at certified dealerships to protect your coverage.
• To arrange fast, expert service, schedule appointment online and review our current service specials for savings.