I am in the same position as a few of you. I bought the replacement tpms for my aftermarket wheels, and the choices were 2012-2013 or 01/2014-2016. I chose 01/2014 as my car was registered in August 2014. It is the gen1 system. I have a ts401 scanner, and I scanned the 3 remaining wheels I have working. They all ID as 433mhz, and can be cloned. Where I am struggling is with the 4th wheel. I cannot clone that, but could manually assign an ID, if I knew what it was supposed to be. I don't want to go to a service centre for something I could fix without incurring Tesla time fees or timescales. Is there a way to get the stored tpms Id's? Thanks