what is " low coolant"???

[hardrock2]

Thank you.

[Casiopea]

Try searching under low coolent, too.

[mykwyner]

I would need more context to be certain, but coolant usually refers to the fluid (anti-freeze and water) in your car's radiator. Low coolant would be some type of warning that your car's engine is running hotter than it should and you should probably check the coolant level.