coolant light?

[Black_Mamba]

I've driven my car hard before & I've never came across anything other than some axle tramp / wheel hop from a dig. A few months ago towards the end of summer, I peeled out & my coolant light came on. When I woke up the next morning obviously it was gone. So I thought its only when I spin my tires launching or peeling out it goes on.

Since then I have done a coolant flush.

Today, some a**hole in a toyota camry floored it and cut me off to get on the freeway. So being me, I punched it & got ahead of him & kept break checking him. He went to go around me like some cat and mouse horseplay & I punched it again & my coolant light came on so I let off & let him go on. I stopped driving hard for the remainder of my trip to school (20 min drive) & I coasted along at about 70 to 80 mph & the light went off. When I got to school I popped my hood while the car was running to notice my fans weren't spinning. On my way home I was cutting through traffic with 2 of my friends & my light came back on. I cruised at 80mph again for about 5 min or so & it went back off again. I got home, checked under the hood, fans off.

My temp gauge is always at half way or under half way so I know it doesn't over heat.

My main question is, is that red coolant light strictly for low coolant level, or could it be to warn me that something in the cooling system itself is faulty? If its faulty, then most likely it goes off due to the fans. But I wanna make sure.

*Attatched is an image of where my temp gauge sits on average. It'll never go ave that unless I'm sitting in my car letting it idle for 20 minutes. But normaly its like that or lower.