The line that goes to the radiator for the purpose of trans cooling has seepage. Its the top line at the radiator, and its on a 2003 F150 5.4 4x4 with tow package.

It looks like the connector is some type of quick-snap connector. Is this a common leak area?

 

if it is the same as mine then it is not a quick disconect type, if you look farther in it will have a bolt you can tighten, hopefully that is all it needs and it is not cracked, if it is cracked you might need a new radiator, hopefully it is just loose, good luck

 

I think mine is some kind of quick disconnect. I will have to look again. I see no bolt and its not a hex fitting either.