-= 1993 LS400 =-

I have searched Many posts from various forums including this one and have gotten the programming instruction with the Door open / IGN key / cycle door locks with procedure.
However I get no indication of what year Ls400 this procedure works on. Like the "ADD NEW", "Erase Previous codes" part..... Does this procedure pertain to 93-94 LS400's like when you get another
Key? I have acquired a used Key from a Cash from a Cashed out Clunker ES300. The FCC ID's match my key. My current key's transmitter is malfunctioning and does not emit any RF signal. If I perform this procedure on my 93 will I be able to ADD this other transponder Key? Or will it have to be reprogrammed with a new ROM etc to match the GOOD Transmitter key?

Whats the deal with the 93-94 LS400's. Are they the same as the 90-92 models? I think 1995 went to a Fob or multi-button setup????

Whats my Recourse?

thanks
Darren

.....Looking at the Key programming ROM setup.... Is it as simple as changing the ROM / Matching Key to get the car to respond to the remote RF signal? or does it still need to go thru that
lock / key programming sequence? Anyone?

Thanks