Genuine OEM Volkswagen Sun Sensor, part number 5K0907539A. This sensor is typically mounted on the dashboard and detects the intensity and direction of sunlight. It provides crucial input to the automatic climate control system to adjust air conditioning performance and may also influence automatic headlight functions. Weighing 0.009 kg and measuring 0.045m x 0.04m x 0.028m, this genuine OEM sensor ensures accurate readings and proper function of integrated vehicle systems, maintaining optimal cabin comfort and safety.