The ones I had on my Taurus and my F-150 were exactly the same. I purchased them after I got the car and added them with the double-stick tape. Both worked perfectly for years.
I was thinking about your problem on the way to work. There are 3125 possible code combinations. There are (probably) 2 codes programed into the keypad, the original one and a prior owner's personal code that they added. That means the odds of finding a code that works should be about 1 in 1600, and if you get a little lucky, you should get it in the first 1000 tries.
Every one I have ever had has had at least one key that was pushed twice in a row, so that should lower your odds even better.
I bet I could crack the code in 400 attempts or less.
If you go that route, BE ORGANIZED. Nothing worse than cracking the code and then not knowing exactly which numbers you just punched in...
You should be able to get it done in about 2 hours. Good luck!
Oh yeah, after every attempt, hit the last two buttons simultaneously, to lock the doors, that clears the previous 5 keypunches and lets you start fresh.
2004 40th Anniversary V6, 95,000 miles. Redfire.
Sold the 509hp 2010 with crazy mods oni 9/22
~Going to miss it~
Check it out at dream mustang .com !
I drive Fords, I sell MBZ. Go figure...