I have a non-PP 2013 SHO and am curious about this as well. Seems silly not to have the button if the wiring is present. My question is would the car's brain recognize the button even if the wiring and plug is present? When I was considering putting heated mirrors in my 2013 Focus ST I did some research and read posts of guys removing the mirrors to find the wiring and plugs present, they installed the new heated mirror glass and plugged everything in only to find the option not "active". Supposedly the dealer could have activated the heated mirror option in the car's brain, but I never heard of anyone successfully doing this. I wonder if the traction control button would be similar in our SHOs? Hope not.