What is this?
Its a square with an arrow pointed down. Its red and looks like i have low fluid, but i dont know what kind of fluid. what is it? please dont flame.
Of course before you do that you will want to check that your radiator is actually full of fluid. (Check when it is cold of course) But 99.9% of the time it will be with this problem.
The sensor is never going to work for very long even if you buy a new one it will go bad eventually.

