Washer Fluid (Screenwash)

It contains detergents and in winter antifreeze. Plain water can freeze and promote bacteria. The reservoir is usually under the bonnet. The same reservoir often feeds the rear washer and headlight washers. Mixing different products can create gel that blocks nozzles. If the pump runs but no fluid comes out, a blocked nozzle, kinked hose or frozen line is usually the cause.

The washer pump pushes fluid through hoses to the nozzles.

Use winter fluid in cold weather to prevent freezing. Some cars show a low-level warning.