i had my check engine light come on today, so i checked all fluids and hoses and found that i had almost no coolant in the overflow. The rad was full though. The car never overheated. I've since filled the tank, also nothing seems different with the car. My question is could this bring the cel to light up? or should i take it to the dealer.

 

Read the code and post back, we have no idea until you tell us information that we can actually compute.
No it couldn't, and no you shouldn't. Just get the code.