1) The SKREEM's memory of the unique code in the key FOB is non-volitile, it cannot be 'erased' or reset by removing the battery cable. (At least, in nine years I've never had to reprogram the car to a FOB and Iv'e replace at least three batteries and have disconnected the battery numerous times for various reasons.)



2) And I have changed batteries several (maybe three) times in nine years, never had to resync the FOB. The code in the FOB is hard-coded, even removing the battery from the FOB won't make it go away.



3) The procedure to sync the FOB to the car IS kinda tricky - I understand if you are frustrated.