Genuine OEM Volkswagen Rear Left Crash Tracking Sensor, part number 3Q0959351A. This sensor is a vital component of the vehicle's passive safety system, designed to detect impacts and provide critical crash data to the airbag control module. It is precisely positioned on the rear left side of the vehicle's chassis. Weighing approximately 0.017 kg, this compact electronic sensor is engineered for rapid and accurate response. Using a genuine OEM sensor ensures correct calibration, reliable signal transmission, and seamless integration with the vehicle's complex safety systems, which is paramount for occupant protection.