Hello everyone:
So I am now going to add my personal experience from today. Christmas Day I hit something, ripped off the belly pan. Didn't think much of it until Sunday morning when I look under my car and I've got ATF everywhere. Freaked out, take it to the shop. They replace the transmission coolant radiator. $667 later I'm driving home. Car freaks out, giving me the "motor-coolant temperature overheating." I immediately have a wtf moment. I realize ATF and coolant are different so stop by the store, all they have is universal coolant.... so go with it. Fill the reservoir: the big 1 on the left. Get maybe 3 miles.... same light, car's freaking out. Open the hood, reservoir still full. Again, wtf?!?! See the tiny reservoir in the middle, above the engine cover, open it - it's bone dry. As of right now I have filled that up and we'll see what happens......