What is the reason why the Audi A4 wiper does not spray water?

[McPreston]

Audi A4 wiper does not spray water reasons: Insufficient wiper fluid: Insufficient wiper fluid. Some cars will have a warning light on the dashboard when the wiper fluid is low, so you need to add wiper fluid until it is sufficient. Wrong wiper fluid selection: Incorrect wiper fluid selection can cause freezing in cold weather, which may crack the wiper fluid reservoir. Therefore, when choosing wiper fluid, you should select an antifreeze type. Depending on the local temperature, choose wiper fluid with appropriate antifreeze properties. There are wiper fluids available on the market for temperatures below zero, such as -10°C or -25°C wiper fluids.