I spoke to Scion about this a few weeks ago and the reaction I got was they had never heard of this before which I find hard to believe.
Today I called my nearby Subaru dealer (even though I have a FR-S) asking what it would cost me to have my car serviced per their TSB 12-140-12. I figured it couldn't be very much and this would be a short-cut to my problem. I decided not to go that route when they told me approximately $200.00.
I printed out the five page TSB of Subaru's and will take that to my Scion dealership tomorrow, leave my car, give them the copy of Subaru's TSB and tell them I want the problem fixed.
It will be intersting to see what results. I will post the outcome here.