Genuine OEM Audi Automatic Gearbox Multi-Function Switch, part number 09D919823A. This switch signals the selected gear position to the transmission control unit, enabling proper gear engagement and vehicle operation. It is an integral component within the automatic transmission assembly. Weighing approximately 0.226 kg, this switch is designed for precise electrical signaling. Choosing a genuine OEM switch ensures accurate gear position detection and seamless integration with the vehicle's complex transmission control system, preventing shifting issues and maintaining optimal performance.