Frequently Asked Questions

What does it mean when the check engine light comes on in a 2012 BMW 5 Series Gran Turismo?

• The check engine light signals that the vehicle's onboard diagnostics detected an issue—anything from an emissions sensor to ignition or turbocharger concerns. At Herb Chambers BMW Certified Preowned Medford in Medford, MA, our factory-trained technicians use BMW-specific scanners to identify the exact code and diagnosis.
• Getting a prompt diagnosis preserves fuel economy, prevents collateral damage, and helps retain long-term vehicle value. Our dealership often costs less than independent shops, while delivering OEM parts, certified expertise, and clear estimates that show immediate and long-term savings.
• If the issue is covered under warranty, repairs must be completed at a certified dealership to maintain coverage—our team will explain any warranty benefits and next steps.
• Ready to move forward? Please schedule service or check our current service specials before your visit.

How long does a check engine light service take?

• Diagnostic scans are typically completed within 30–60 minutes. Repairs vary by fault—simple fixes can be same-day, while parts-intensive repairs may require additional time.
• Herb Chambers BMW Certified Preowned Medford prioritizes quick turnarounds with transparent estimates and efficient bay scheduling so you spend less time waiting and more time driving.
• We offer complimentary vehicle pickup/drop-off options and comfortable customer amenities; ask about service financing to get repairs now and pay later.
• To confirm availability, schedule appointment or view our current service specials.

How much does a check engine light diagnostic cost for a 2012 BMW 5 Series Gran Turismo?

• Typical diagnostics at our dealership are competitively priced and include a comprehensive scan, code interpretation, and a written estimate. Our service pricing often costs less than independent shops while providing OEM accuracy and certified technicians for long-term savings.
• Exact cost depends on the complexity of the fault; we will always provide a clear estimate before any repairs. Performing diagnostics and repairs at a certified dealership helps protect warranty coverage and vehicle resale value.
• We also provide service financing so you can address issues today and pay over time. Check available offers under service specials and schedule service online.

What is the most common reason for check engine light on a 2012 BMW 5 Series Gran Turismo?

• Common causes include oxygen sensor faults, loose or failing gas caps, ignition coil or spark plug issues, and turbocharger or boost control sensor faults in turbocharged engines. Left unaddressed, these can reduce fuel economy and increase wear on related systems.
• Our technicians diagnose root causes with BMW-specific tools and recommend OEM parts to restore performance and efficiency. Choosing dealership service delivers transparency, documented repairs, and warranty-safe work.
• We help owners understand immediate costs and long-term savings, and we offer financing options and seasonal service specials for eligible repairs.

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

• Start with basic checks: confirm the gas cap is secure, listen for unusual noises, and note drivability changes. Even simple actions can clear a light, but persistent illumination needs a professional scan.
• Bring your 2012 BMW 5 Series Gran Turismo to Herb Chambers BMW Certified Preowned Medford for an accurate diagnostic. Our certified technicians will scan the vehicle, explain results in plain language, and outline repair options that protect longevity and resale value.
• To book, schedule service now and review current service specials. We also provide service financing to get you back on the road immediately.