After you subscribe go Programming and Initialization  and download FMP (Ford Module Programming) software to be used with a windows computer as well as your Autel's J2534 Maxiflash Pro,  use your USB adapter cable provided. Before you begin, install J2534 Maxiflash Pro Windows PC drivers that are on a CD that came with your Maxisys PRO, If you don't have the CD dowload Maxisys PC Suite from this website and Install Maxiflash Pro drivers on the PC you plan to use for programming. Remember to install Maxiflash Pro drivers before you run FMP,. Once you have that installed run FMP that you downloaded from  Ford, select your J2534 from FMP menu (your Maxiflash Pro should be listed if you have drivers properly installed); select Start New Session from tabs on top, select check mark on the bottom right to continue following all the steps carefully, verify the model year and appropriate VIN number, click check mark to continue; select Module Programming (found under toolbox icon on top) you will see three sub menus: "Programmable Module Installation", "Module Reprogramming", and "Programmable Parameters"; to flash a new or used module select Programmable Module Installation from sub menu, select appropiate controller to be flashed, PCM in your case, and follow all the instructions the program gives to you carefully. After you finish the reflash you have to do a PATS relearn found under the same FMP software (PATS  Functions menu)  so the car can learn the keys. Be aware that you might need two separate keys to finish PATS relearn.

For step by step tips download video from Drewtech, and follow the same procedure using Autel's J2534 instead: http://www.drewtech.com/Videos/Ford.wmv