And if you don't like paying the dealer to read a code. Just wait til you lose your last key.
If you only have one key and lose it, you will have to be towed to the dealer who will then gladly charge you a LOT of money to make new keys, just because they are "Special". The manual even tells you that you are going to get reamed. I think to make new keys when you have none costs something like a few hundred dollars. Could be worse, I hear Volvos, another Ford product, costs something like $1,000 per key.
If you only have one key, you still have to go to the dealer to get a copy made since you need two keys before you can make and program other keys. I have heard a few key shops can do this, but it isn't common.
SO always make sure you have at least 2 keys and 3 is better, so you can lose one. You can program and make a new key if you already have two. If you have one the dealer has to do it and will charge a good chunk o change. If you lose your last key, you get towed and then reamed.
Wish I had my code so I could just use the keypad if I lock myself out. Right now I have to go home and get my spare key fob if this happens. If I lose my last key, read the above.
Good Luck,
Jim Henderson