The Genuine Mercedes Brake Fluid Level Sensor - 1779050902 is a component used in Mercedes vehicles to monitor the level of brake fluid in the brake system. It is a sensor that is installed in the brake fluid reservoir and sends a signal to the vehicle's computer when the fluid level is low. This helps to ensure that the brake system is functioning properly and prevents potential brake failure. The sensor is a genuine Mercedes part, designed specifically for use in Mercedes vehicles, and is made with high-quality materials for durability and reliable performance. It is an essential part of the brake system and helps to maintain the safety and reliability of the vehicle.