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With FORScan you can communicate with the truck and access the PATS module/system. You can then view how many keys you have stored. I would think two is normal. In my case I believe the original owner lost one of the original keys and then just had a key cut but never programmed probably because at the time it was expensive... In that case he could never program a spare key because he didn't have both original keys that were programmed in PATS to make a third key work.
This is the how to:
http://forscan.org/forum/viewtopic.php?f=6&t=839
This is a youtube video of a guy that explains it well.
https://www.youtube.com/watch?v=72kRKVV0aJ0&lc=z23ljjh4mnycfxas4acdp434mxnpvegtg3eq3xngqdpw03c010c.1522190058599479
When you use FORScan you are then able to delete both sets of keys in PATS. At which point you can then program new keys to the system. In my case since the second key was an OEM Ford key even though it wasn't an original I could use my original key and the second key to then code PATS into having two working keys. I believe you can only have two MAIN keys in PATS, everything else after that is considered a "spare" but you must have the two keys that were used when coding PATS to be able to program the spares.
The process was actually very very easy. I was really worried about deleting both sets of keys because I was afraid the truck wouldn't start. Which is entirely possible if you do not use an OEM key. So you'd have to wait until you got two good keys to program before the truck would start. IE: Do NOT use a chinese knock off... Get the Strattec key. This is the one I ordered:
https://www.ebay.com/itm/Genuine-STRATTEC-OEM-Ford-4D63-Crypto-80-Bit-Transponder-Key-5913441-164-R8040/262761221454?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
Before reading the thread and watching the video I thought the process would be a 7-8 out of 10. After doing the process it's like a 1-2.
The longest part for me was finding drivers to work with the ELM327 OBDII/USB device.
Hope that helps. Had I known about this sooner, I would have done it years ago. Software is free for Windows. This entire thing saved me $200 that the dealer wanted years ago when I called them explaining that my second key didn't turn the truck on. They quoted re-program and having another key cut.
-Nigel
Last edited on Wed Mar 28th, 2018 05:13 pm by NewShockerGuy
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2001 XLT 2.3L
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