Frequently Asked Questions

What does it mean when the check engine light comes on in a 2018 Ford Focus ST?

• It signals the vehicle’s onboard diagnostics detected an issue — anything from a loose gas cap to an emissions or engine control problem. Our technicians at Larry H. Miller Ford Lincoln Draper in Draper, UT use factory-grade scanners that read exact Ford codes for accurate repairs.
• We prioritize quick diagnosis to limit damage and long-term cost. Acting early often reduces repair complexity and parts cost, delivering immediate and long-term savings compared with deferred fixes.
• Repairs covered under warranty must be completed at a certified dealership to preserve coverage; our certified techs and OEM parts ensure that warranty work is handled correctly and transparently.
• When you're ready, you can schedule service online — we also offer service financing so you can get needed repairs now and pay later.

How long does a check engine light service take?

• Most diagnostics are completed within one hour; simple fixes (like a sensor or gas cap) can often be resolved the same day. More involved repairs may take longer depending on parts availability.
• At Larry H. Miller Ford Lincoln Draper we offer efficient workflows, OEM parts, and certified technicians to speed turnaround without sacrificing quality.
• We provide clear estimates and explain immediate and long-term savings from using factory-trained technicians, and we recommend checking our current service specials before your visit.
• To guarantee a convenient visit, schedule appointment online and we’ll prepare your 2018 Ford Focus ST for fast service.

How much does a check engine light diagnostic cost for a 2018 Ford Focus ST?

• Diagnostic fees vary; our pricing is competitive and often costs less than independent shops while delivering the added value of OEM parts, certified techs, and validated repairs.
• By diagnosing and fixing issues promptly you save on cascading failures and avoid higher long-term repair bills; we emphasize transparency and will explain costs before work begins.
• We accept service financing options so you can address problems immediately and pay over time, preserving vehicle health and resale value.
• Check our service specials for current offers and schedule service to get a firm estimate for your 2018 Ford Focus ST.

What is the most common reason for check engine light on a 2018 Ford Focus ST?

• Common causes include a faulty oxygen sensor, loose or damaged gas cap, evaporative emissions issues, or a failing ignition coil. These issues are typical for compact performance hatchbacks and are caught quickly with our Ford-specific diagnostic tools.
• Addressing these items promptly reduces fuel waste, preserves performance, and prevents more expensive repairs later — immediate savings that compound into long-term value when maintained by our certified team.
• Warranty repairs must be completed at a certified dealership; our technicians will document and, if applicable, process warranty claims properly to protect your coverage.

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

• Start with the easy checks: ensure the gas cap is tightened. If the light remains, book a professional diagnostic — our trained technicians will read the exact fault codes and recommend the most cost-effective fix.
• Use our online tools to schedule service quickly or view service specials to reduce immediate costs.
• We offer transparent estimates, OEM parts, and service financing so you can make the right decision for your 2018 Ford Focus ST without delay.