How do you replace a windshleld washer pump on a Mercedes Benz E320?

To replace the windshield washer pump on a Mercedes-Benz E320, start by disconnecting the vehicle's battery for safety. Remove the washer fluid reservoir, which may involve taking out fasteners or clips. Once the reservoir is accessible, disconnect the old pump from the reservoir and unplug the electrical connector. Install the new pump by reversing the disassembly steps, ensuring all connections are secure before reassembling and testing the system.