The water pump is a crucial component of a car's cooling system. Its primary function is to circulate coolant through the engine and radiator, ensuring optimal operating temperatures. When the engine runs, the water pump draws coolant from the radiator and pushes it through the engine block, absorbing heat. This process prevents overheating and maintains engine efficiency. A malfunctioning water pump can lead to serious engine damage, making regular maintenance essential. Signs of a failing water pump include coolant leaks, unusual noises, and overheating. Therefore, drivers should be vigilant and address any issues promptly to ensure their vehicle's longevity.