2010 4 cylinder 251k miles. Subaru replaced the cvt valve body a few years ago. I was pulling a trailer today, and on the return trip from where I was going, the at temp light started flashing. There was no noticeable difference in performance. At that point I pulled over to let the transmission cool off and found out that I could not shift from drive to reverse. I could shift from drive to neutral and then it feels like I hit a brick wall. It will not even come close to going into reverse or Park. At that point I drove about 30 more miles home with no problems but I still cannot get the car in park and the key is stuck in it. When I was almost home I also noticed that my turn signals were not working. I'm pretty sure these did not go out at the same time as the transmission light came on. Any ideas?