Paraphrased from an earlier post on this subject by Gerry Pierce
(search on Ford Sport Trac Keypad Code):
For a 2002 Sport Trac the security module is most likely behind the
passenger side airbag (earlier models had it behind the back wall
cover). To get a look at the module disconnect the battery, empty the
glove box, disconnect by squeezing the two stop tabs on the side of the
box, and let the glove box drop all the way down. Look up under the
dash and you will see two 8MM bolts (wrench size) that are used to
mount the air bag. Remove these bolts. This will disconnect the air bag
so it will come straight out the dash. Disconnect the air bag cable and
place the air bag aside. Playing with air bags is dangerous and you
might want to consider leaving the job for someone else before doing
this. If you do remove the air bag, look in the big hole left in the
dash. You should see an off-yellow/beige little box on the upper left
hand corner of the air bag hole. Loosen the 2 7mm bolts that are used
to mount this box. The code is on the top of that box. It will be a 5
digit number. Put everything back in reverse order. The defualt code
does not change--the user can set their own, but the default will still
work also.
According to the original post, this is not as complicated as it
sounds, but since it invovles the air bag you may want to think hard
before you try it.
You may also want to go to
http://tinyurl.com/7anmg (links to a form at
http://mysporttrac.com/mysporttrac/ )
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There are other complicating factors. Ford has been changing the type
of security module used for the keyless entry system. The older modules
had the permanent code hard wired in at the module manufacturer and the
label with the code was always present. Ford has been changing to a
system that is programmed during the vheicle manufacturing process. I
believe that Ford moved the location of the module from behind the rear
wall cover to the front dash area at the same time as they changed to
the new type module. This may have been when they made the model year
changeover from 2001 to 2002, or it may have occured part way through a
model year. I have heard conflicting information about whether or not
these newer modules are labeled with the permanent code. They
definitely can be read by the dealer using the Ford diagnostic
equipment (for a price).
Ed