Genuine OEM Volkswagen Seat Lumbar Control Unit, part number 3AA959257A. This electronic control module is responsible for managing the lumbar support adjustment mechanism within the seat, allowing for personalized comfort settings. Typically located on the left front seat, it processes inputs to precisely control the lumbar support. Weighing 0.2016 kg and measuring 0.15m x 0.105m x 0.03m, this unit is engineered to exact factory specifications. Choosing a genuine OEM control unit ensures seamless electronic integration, correct firmware, and reliable operation of the seat's comfort features, maintaining the vehicle's interior functionality and driver ergonomics.