I just received my new (used) remote in from Ebay with matching FCC ID (BGBX1T478SKE12501). This was advertised as the Mazda 6 OEM remote with 4 buttons.
I programmed the new remote, per instructions found on several online forums (
http://www.mazda2forums.com/index.php?topic=188289.0), and the remote trunk release worked immediately! This is for the 2012 Mazda 2 with the electronic trunk release button on the rear hatch.
WHY would someone want a remote trunk release?
- you want to open only the trunk and not unlock all of the doors
- you have kids, and it's just easier to do one less step of pushing the button on the hatch (though you still need to press the remote)
I originally thought I would need to reprogram the remote entry unit or do some rewiring. I guess Mazda cheaped out (even though the 4-button remote probably doesn't cost any more than the 3-button version) on us.
Enjoy!