I own a 2002 Mountaineer and both Explorer and Mountaineer don't have tranny dipsticks. The tranny is sealed and filled with a 100K mile tranny fluid. Also I don't think they have an external tranny cooler anymore. It was described to me as an internal tranny cooler, whatever that means. It was tested in 100 degree heat towing maximum capacity without failing.
I used to change my own transmission fluid regularly, I won't be doing that on this vehicle.