Genuine OEM Audi Additive Container Sensor, part number 7L6919673F. This sensor is responsible for accurately monitoring the fluid level within the vehicle's additive container. It is typically installed on top of the additive reservoir, providing critical data to the engine management system. Weighing 0.091 kg, this sensor ensures precise level detection. Genuine OEM sensors provide exact calibration and signal characteristics, crucial for accurate readings and proper system function.