Genuine OEM Volkswagen Glow Plug Control Module, part number 038907281C. This electronic control unit is responsible for precisely managing the activation and timing of the glow plugs, which are critical for reliable cold starting in diesel engines. It operates at 12V and weighs approximately 0.07 kg. Opting for a genuine OEM control module ensures correct firmware, precise sensor calibration, and seamless integration with the vehicle's electrical system, preventing engine starting issues and maintaining optimal performance.