I know my wiper fluid is low when I push the button to spray the wiper fluid and a less than normal amount comes out. Why does anyone need a light for that? How often do people use wiper fluid?
For a few weeks in the year when there's a change to be sprayed with dirty water, ice, slush, hail, snow, and dust depending on the day. Being able to clear the windscreen is vital. Having an early warning is definitely better than realising you're fucked after you're fucked.
Conditions vary around the world. Many people may never need wipers.
Conditions vary around the world. Many people may never need wipers.