The inability of windshield washer fluid to function properly in low temperatures often stems from freezing within the system. This can occur in the reservoir, the pump, the hoses, or even within the nozzles themselves. When the fluid freezes, it expands, potentially causing damage to components and preventing the system from delivering the fluid to the windshield. For example, a frozen fluid line can restrict or completely block flow, rendering the washer system inoperative.
Maintaining a clear windshield is crucial for safe driving, particularly in adverse weather conditions. Impeded visibility due to snow, ice, road salt, or grime significantly increases the risk of accidents. A functioning washer system is essential for clearing these obstructions quickly and efficiently. Historically, drivers relied on manual methods to clear their windshields, but the advent of automated washer systems significantly improved driver safety and convenience. The development of specialized winter washer fluids was a further advancement, addressing the challenges posed by freezing temperatures.