Scion 2006 xb overheats when at idle for more than after 5 mins.?

if you are sitting still and it over heats after 5 minutes in that position but it cools down when you are driving that means to me that you are not getting the air flow through the radiator. double check the fuse for the cooling system fan, if that is still good, check out the relay for that same system. if that is ok, it is time to test out the fan. turn on the ac and see if the fan turns on, but if the system is failing do not do this for very long. any other questions you have, you can find me here.