Hello XXXXX'm Chris, a current Ford Lincoln Mercury employee.
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Ford on previous models would place a sticker on the security module but on this vehicle the module which controls the remote keyless entry transmitters and pad is the SJB. The SJB is the interior fuse panel and likely it does not have a label on it. You will not harm anything by looking using a mirror and flashlight.
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Yes the SJB is to the right of the passengers right foot. You will need to disconnect the negative battery while unplugging things.
I was able to remove the kick panel and the weather strip and with a flash light read the 5 digit code on the rear of the SJB. Thanks for the help.