The Genuine Mercedes Windshield Washer Nozzle Heater - 2238301700 is a component designed for Mercedes vehicles to heat the windshield washer nozzles. This helps to prevent the nozzles from freezing in cold weather, ensuring that the windshield can be properly cleaned. The heater is a genuine Mercedes part, providing high-quality and reliable performance. It is compatible with various Mercedes models and is a necessary component for safe and effective windshield cleaning.