A washer pump is a small electric motor and pump assembly that is commonly used in cars to spray windshield washer fluid onto the windshield to clean it while driving. The washer pump is usually located in the washer fluid reservoir, which is typically located in the engine compartment of the car.
When the driver activates the windshield washer switch on the car's dashboard, an electrical signal is sent to the washer pump, which then pumps the washer fluid through a small hose and out of nozzles mounted on the hood of the car. The washer fluid is usually a mixture of water and a cleaning agent, such as soap or alcohol, that helps to remove dirt, dust, and other debris from the windshield.
The washer pump is designed to be durable and long-lasting, but it may fail over time due to wear and tear or damage from exposure to harsh weather conditions or road debris. Signs that the washer pump may be failing include reduced or weak washer fluid spray, unusual noises coming from the pump, or the washer fluid not spraying at all.
If the washer pump fails, it is typically an easy and relatively inexpensive part to replace. A mechanic can diagnose the problem and replace the washer pump if necessary to ensure that the windshield washer system is functioning properly, which is important for maintaining clear visibility while driving.