The water pump is a crucial component of a vehicle's cooling system. Its primary function is to circulate coolant through the engine and radiator, preventing the engine from overheating. The pump is typically driven by the engine's serpentine belt and operates continuously while the engine is running. A malfunctioning water pump can lead to serious engine damage due to overheating, so regular maintenance is essential. Signs of a failing water pump include coolant leaks, unusual noises, and overheating engine temperature. Timely replacement of a worn-out water pump can ensure the longevity and reliability of the vehicle.