Frequently Asked Questions

What does it mean when the check engine light comes on in a 2016 BMW 3 Series Gran Turismo?

• It signals that the vehicle’s onboard diagnostics detected an emissions, fuel, or engine management issue. Common triggers include a loose gas cap, failing oxygen sensor, or ignition misfire.
• At Nalley BMW of Decatur we perform a complete diagnostic scan and interpret BMW-specific trouble codes, so you get accurate results and OEM repair guidance.
• Our pricing is competitive — we often cost less than independent shops while delivering factory-trained technicians, genuine parts, and warranty protection that preserves long-term value and future savings.
• If a repair is covered under warranty, it must be completed at a certified dealership to maintain coverage. We also offer service financing to help you get the work done now and pay over time.
• To begin, schedule service online and review our service specials for added value.

How long does a check engine light service take?

• Diagnostic scans for a 2016 BMW 3 Series Gran Turismo typically begin with a targeted code read and system check that can take 30–60 minutes; comprehensive troubleshooting or repairs vary by issue.
• Minor fixes like tightening a gas cap or replacing a sensor can often be completed the same day. More involved repairs that require parts ordering may take longer, but we provide clear timelines up front.
• Nalley BMW of Decatur prioritizes speed without sacrificing accuracy — our certified techs and dealer inventory help minimize downtime and ensure repairs are done right the first time.
• We recommend checking our service specials for discounts and using our online booking to schedule service to secure a convenient appointment slot.
• Service financing is available to get immediate repairs completed and protect your vehicle’s long-term performance and resale value.

How much does a check engine light diagnostic cost for a 2016 BMW 3 Series Gran Turismo?

• Diagnostic pricing can vary by the depth of testing required; at Nalley BMW of Decatur we offer transparent diagnostics and will explain all charges before work begins.
• Because we use BMW-specific scanners and factory procedures, our diagnostics reduce the risk of misdiagnosis and costly follow-up repairs, delivering immediate and long-term savings compared with repeat visits.
• We frequently run service specials that lower out-of-pocket cost, and service financing is available so you can address issues now and pay later.
• If repairs are necessary, remember warranty-covered work must be performed at a certified dealership to preserve coverage — we will help you navigate warranty benefits and recommended service.
• To check availability and pricing, schedule service and receive a clear estimate from our service advisors.

What is the most common reason for check engine light on a 2016 BMW 3 Series Gran Turismo?

• The most common causes include oxygen sensor failure, evaporative emissions leaks (like a loose gas cap), or ignition misfires from worn spark components.
• Ignoring these warnings can lead to reduced fuel economy, higher emissions, or more extensive engine damage — dealing with issues early saves money over time.
• Nalley BMW of Decatur diagnoses these faults with manufacturer-grade tools and performs repairs with OEM parts, ensuring correct repairs and maintaining vehicle longevity.
• Take advantage of our service specials and flexible payment options to prioritize preventive care and protect resale value.
• Book quickly by clicking to schedule service with our certified technicians.

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

• Start with simple checks: ensure the gas cap is tightened, check for obvious fluid leaks, and note any performance changes like rough idle or loss of power.
• Even if it seems minor, bring your 2016 BMW 3 Series Gran Turismo to Nalley BMW of Decatur for a quick scan; many issues that appear small can indicate developing problems.
• Our dealership approach prioritizes accurate diagnoses using BMW-specific tools, genuine parts, and factory procedures — this saves money over time by preventing repeat repairs.
• Warranty repairs must be completed at a certified dealer to remain valid; we also offer service financing to make timely repairs affordable.
• To get started, schedule service and see available service specials before your visit.