Why Can't I Fill Up the Windshield Washer Fluid When It's Not Full?

[VanMiguel]

Windshield washer fluid cannot be filled when it's not full due to internal blockage, and it is recommended that users clean it promptly. Below are relevant details: 1. Pay attention to temperature: Before filling the windshield washer fluid, it is necessary to understand the local climate, especially the temperature. If it is below zero degrees, choose a washer fluid with a low freezing point to ensure it does not freeze in the car. 2. Do not use water as a substitute: Water should not be used as a substitute for windshield washer fluid, mainly because water freezes at 0 degrees in winter. Additionally, tap water contains many impurities and does not provide anti-corrosion benefits for components, which can easily lead to aging of parts. 3. Notes on car windshield washer fluid: Different windshield washer fluids have slight differences in usage, especially in some performance aspects. Some have stronger cleaning capabilities, while others have better anti-freezing properties.