Well, the coolant is up to level, I am real meticulous about maintenance.
However, the "low coolant" light sometimes flashes. Car is not overheating or running warmer than normal. I thought "Well maybe the sensor is bad"
Located it on the radiator, could harnesses seem to be in the way, but it is right there.

So I look at autozone website for a price, and they want 50 bucks for this thing! Hell with that, I will just live with the light flashing.
It might be messed up on count of having used "alumaseal" to stop a tiny leak I simply could not locate, but messed up or not, I ain't about to drop a 50 on that thing.

I don't get why simple sensors like that are so God-awful expensive. A MAF or MAP, maybe, but this stupid thing?