Genuine OEM Volkswagen Rain Light Sensor, part number 1Q0955557. This sophisticated sensor is responsible for detecting rainfall on the windshield and ambient light levels, automatically controlling the vehicle's wipers and headlights for optimal visibility and convenience. It is typically mounted on the inside of the windshield, often behind the rearview mirror. Weighing just 0.023 kg and compact in size, this electronic component is critical for advanced driver assistance features. Choosing a genuine OEM sensor guarantees accurate calibration, reliable signal characteristics, and seamless integration with the vehicle's electrical system.