STOP!!!
Maybe you don't have to tow it.
Do you have to key "code" or key cutting indentations #s written down? do you have another key?
FORD WILL HAVE YOUR KEYS #s From your VIN # and a computer check I believe Get the cheap blank cut
Anyway, if you have the other part, get a cheap Ford key non-pats and just keep the old key fob on your keychain... it will work the PATS
If you got no key at all you are in for a new ig/lock set for several hundred installed.
EVERYONE: you can find out the key cutting code for your locks/keys get it, save it!!! with no key you can get a new key cut by the numbers at a dealer or a car lock place.
If you got PATS, you will need your fob around. And that none PATS key can open doors, trunk...
I have a non PATS key cuts for $3 just in case I lock myself out of the car with the keys inside