You can add a wireless, keyless entry pad to any Ford vehicle for about $85.
( If a dealer tries to sell you one for $189 or $199 installed, ask them in a naive voice:
"Doesn't that just come with waterproof double sided tape? And can't I program it in 30 seconds like a 3rd or 4th key?" )
The answer to both questions is "yes". Thus, when face to face with an informed customer, they will have no other option but to sell you the part for a reasonable price, without the $100 of "labor". The part sells for $85 or $89 online.
That's what I did. My FEH now has a keypad just like the MMH!
P.S. There is a "normal" keypad (used on cars 1998-2005 ) and a "slim" keypad used on the newest cars. Both work the same. The "slim" keypad costs more. The $85 price is for the "normal" keypad.