Hey guys another stupid question, This morning during my ride to work I noticed a service light on, I'm not sure what the light is but it obviously has something to do with the fan or fluid level in the radiator. its a small box with a fluid level and fan blade, it is also the last possible light to go towards the right. Does anybody know what I should look for. I haven't gave the car a chance to cool down to pop the cap off of the radiator yet.