What business areas are affected by an ISO/TS 16949 quality management system?

Directly impacted are the functions directly involved in the process of meeting customer needs. That means your marketing people, design department, purchasing, production / service delivery, warehousing, transportation, etc. Impacted also are certain support functions, including maintenance, training / human resources, and purchasing. About the only significant part of your organization not generally taken under the quality management system umbrella is finance.