There are several potential reasons why a windshield washer pump may stop working, including:
Clogged nozzle: If the nozzle that sprays the washer fluid onto the windshield is clogged, the fluid may not be able to pass through and the pump may stop working.
Failed pump motor: The pump motor is responsible for powering the pump, and if it fails, the pump will not be able to function.
Wiring issues: If the wiring that connects the pump to the vehicle's electrical system is damaged or corroded, it may prevent the pump from functioning.
Failed relay: The relay is a switch that controls the electrical current to the pump, and if it fails, it can prevent the pump from working.
Failed fuse: The fuse is a protective device that prevents the electrical system from being overloaded, and if it fails, it can prevent the pump from functioning.
Low fluid levels: If the fluid level in the washer fluid reservoir is too low, the pump may stop working.
Overall, if your windshield washer pump is not working, it is important to diagnose and repair the issue as soon as possible, as a functioning washer pump is an important safety feature that helps to keep your windshield clear while driving.