well you should be able to see where the trans cooler sent and return lines bolt up to the transmission cooler. My T100 is a manual, but usually transmission cooler lines are metal lines like brake lines or a/c lines as oppossed to being soft rubber hoses. I'd look and see, maybe the line isn't blown but is leaking at the fitting for whatever reason.

I don't understand what battle you'll have. You'll pay a few hundred bucks for the tech to find the leak and fix the fitting or replace the hose and flush and fill the transmission.