How do i link multiple homelink vehicles to a Genie garage door opener without erasing code for each Lexus? I tried to move each Lexus down the street so that code would not be erased but now after re-doing the garage door keypad, all cars have lost garage access.

 

IIRC, whenever you attempt to program a new remote (car or hand held), as soon as you push the button on the unit inside the garage, it erases all the remotes stored in the garage unit. You have to reprogram all remotes at the same time, one after another.... unless the procedure has changed on newer units.