citizen

Hello I have recently acquired a lovely 1994 dv10 camry vienta ultima v6 but have a problem with one of the remotes. Checked with various dealers but they dont seem to want to help, may be car is too old! The remotes have a single button on the side of the key fob joined to the key With one key remote you can put the key in the door lock and it locks the doors and turns on the security light or press the remote to do the locking and security The other key remote locks the doors and turns on the security light when placed in the door lock but does not do this when the remote is pressed. I have tried replacing the batttery with no luck. I have heard about reprogramming the key or transponder in glovebox, turning the ignition keys on and off, but there is nothing in the manual and it seems different procedures for each model! Does anyone know about this for a 1994 camry?