Trans fail safe can be from a faulty speed sensor in the tranny. The engine revving up and doing weird things on inclines and such is your tranny slipping. I'd get the fluid changed soon at a reputable indy shop. Not a stealership. If you still experience the same issues after the fluid change you may try and have a software update to your tranny if it hasn't been done prior to your ownership. That will need to be done at the dealer. The fluid leak could be oil or tranny fluid (cooling hoses). You need to have the skid plate taken off and trace the leak.

Good Luck!