When I purchased my '19 the dealer wanted me to sign up for key replacement. Said it was good to have because the cost was so high. After looking on EBAY all I can say is theres some serious rip offs going on. I have to admit that when it comes to Subaru electronics, programming and all that, Subaru is seriously tight arsed. All my other cars have been hackable. I mean come on....its a stinking key fob, a mini transmitter which in actual production might be just a few bucks but then the dealer needs to do a dance, chant heebee jeebee over it before it can work. Apple is possibly going to offer phone as key in the 14 update but your car needs to be equipped for it. Would be nice to see that in the Subaru. Frankly Im hard pressed to see why it cant be done now. The My Subaru app already has ignition capability so why not just make the plug in link to phone the key. Naturally an extra level of security might be required but it should be able to be done.