Genuine OEM Audi Volume Control Rotary Knob Switch, part number 4F0919070. This interior control component is designed to operate the audio volume adjustment, providing both rotary control for fine-tuning and a push-button function for quick actions. It is typically located on the center console or dashboard. Weighing 0.007 kg and measuring 0.03m x 0.03m x 0.02m, it features a durable finish. Using a genuine OEM knob switch ensures perfect fit, matching aesthetic, and reliable electrical contact for consistent performance.