How to Replace the Replacement Key Battery For the saab 93 key fob key fob (check out your url) 9-3 saab 9-3 key programming owners must follow a set of steps that are unique to add a second ignition key. This requires the use of a handheld computer, known as Tech-2, to be used by the dealer. Then a new key as well as transponder must be purchased and progra...