2009 FORD FOCUS Factory Fob system girlfriends fob just quit changed batt nothing?? so did the program thing key on off 8 times car made noise i push button all worked ok...BUT the other fob quit working??? so program that one (the old one) it works now BUT the new one lost program??? so Program new one back again old one lost its program??? so go with new fob it works after program...but old other inop now?? Fob came from lock and key shop in town..20 bucks 4 button FOB ALSO any way to get in trunk if fob inop??? only seems to have trunk button on fob!! what will wipe fob out???

 

The key fobs are all programming in sequence during one programming session. It's a rolling code, so if their done one at a time per programming session, the fobs will never match.

 

you the man!! i was doing 1 at a time WRONG needed to do all 3 fobs at 1 time on same key cycle!!! worked!! NOW any ideals on how to open trunk without FOB???? 2009 focus and thank you for other!!!