So I swapped wheels and tires today. The new wheels had new TP sensors in them and I have the tool to calibrate the sensors. I was expecting a dash light when I started the car....nothing. I pulled out of the shop thinking the ones on the stock wheels might be in range....nothing. I adjust the air pressure in the new tires and check the gauge on the gauge on the dash and it corresponds to what I had in the tires. Just to see if they were correct, I filled the driver side rear tire to 10 psi higher and the dash read correctly.
So, is the TPMS in the '15's self learning? I didn't need the tool at all.
From what I understand it can be a few miles before you'll get the dash warning, but I have also heard for some people they auto sync.
I had 3 new sensors synced at a tire shop and the 4th apparently was in power saving mode so they told me to come back when the warning light comes on to sync it. Already been 50+ miles and never came up so I guess that one synced by itself.