JiK... I have a 2010 F150. Whadda you got? Tire pressure sensor fault indictator light up 4 days after warranty and here is how I fixed mine. It's a much more simple procedure.

1. Say "Well piss me off. Fuckin Ford piece a fuckin shit."
2. Ignore the Ford fuckin piece a Forf shit fuck sensor fault light.

Note that step one need not necessarily be done in a loud voice but, for me, it's unavoidable because the ABS sensor in my last PAFSF calved three days after the warranty was up. I followed the same procedure then and that worked for me for over seven years.