car starts but will not move in drive or reverse. Worked fine when parked

The tough part of answering this questions is the guessing game involved. Too many variables happening to know anything for sure. When you are eliminating transmission cooler from the set up by "bypassing" the lines, I would wonder if the lines were damaged in the collision and if the transmission was damaged due to lack of fluid at some point. All total guesswork; a proper technician near you should weigh in. Contact someone on the following list for some help! Good luck! http://repairpal.com/subaru-within-10-miles-of-smithton-pennsylvania-15479