Hi,hope all is well with you and yours. i really need your help.i owned a '90 LS400.The key-less entry doesn't work,after replacing then battery.(i took a month to actually replace the battery)I was then told that i need to reprogram the system, in order for it to work. i followed your instructions for the above steps. This "Rom" piece was attached to the module by a single screw.There are two wires runs from the Rom and connects to a harness independently.On the Module they are: Female connection and a gray wired that runs on its own. I can take pics for further clarification.
I am unsure what i need to "pull out and re-set" from this Module. Now, the trunk latch wouldn't unlock with the ignition key after i manually locked it.any other suggestions.