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sin4me · 08-31-2005, 05:10 PM

I actually came across some info online that helped me reprogram it. Here is an excerpt that may help people in the future:

" The first case is a situation I experienced with a Mustang Remote Keyless Entry (RKE) system. Earlier Ford RKE systems had a stand-alone module, but on the '99 Mustang, it had migrated to the innards of the Generic Electronic Module (GEM) module.

The transmitter fob on your keychain sends a radio signal to the GEM, which either locks or unlocks the doors and honks the horn if you so desire, while at the same time operating the door locks and activating the illuminated entry system. On this vehicle, the RKE system was totally inoperative. In many cases, simply reprogramming the GEM to recognize the signal from the fob takes care of the problem. On the Mustang, cycling the key eight times puts the GEM in programming mode; the locks cycle to indicate it has entered the mode. When any button on the transmitter is pressed, the GEM cycles the locks in response to indicate that it has recognized and recorded the frequency of that particular fob. When the key is switched off, the locks cycle again, terminating the programming session. As many as four fobs can be programmed in a session.

This Mustang entered programming mode and cycled the locks for me, but when I tried the transmitter after exiting the programming session, it still wouldn't work. To make a long story short, a "Special Service Message" search and a subsequent call to the hotline revealed that I needed to go beyond regular service procedures. On early 1999 Mustangs, the hotline guy indicated, fuse 38 must be removed for a few seconds. Reinstalling the fuse would bring the GEM's RKE function back on line. It did."

08-31-2005, 05:10 PM	#8
sin4me Registered Member Join Date: Aug 2005 Posts: 4	Re: Keyless Entry Dead I actually came across some info online that helped me reprogram it. Here is an excerpt that may help people in the future: " The first case is a situation I experienced with a Mustang Remote Keyless Entry (RKE) system. Earlier Ford RKE systems had a stand-alone module, but on the '99 Mustang, it had migrated to the innards of the Generic Electronic Module (GEM) module. The transmitter fob on your keychain sends a radio signal to the GEM, which either locks or unlocks the doors and honks the horn if you so desire, while at the same time operating the door locks and activating the illuminated entry system. On this vehicle, the RKE system was totally inoperative. In many cases, simply reprogramming the GEM to recognize the signal from the fob takes care of the problem. On the Mustang, cycling the key eight times puts the GEM in programming mode; the locks cycle to indicate it has entered the mode. When any button on the transmitter is pressed, the GEM cycles the locks in response to indicate that it has recognized and recorded the frequency of that particular fob. When the key is switched off, the locks cycle again, terminating the programming session. As many as four fobs can be programmed in a session. This Mustang entered programming mode and cycled the locks for me, but when I tried the transmitter after exiting the programming session, it still wouldn't work. To make a long story short, a "Special Service Message" search and a subsequent call to the hotline revealed that I needed to go beyond regular service procedures. On early 1999 Mustangs, the hotline guy indicated, fuse 38 must be removed for a few seconds. Reinstalling the fuse would bring the GEM's RKE function back on line. It did."