How do I resync my remote?

To resync your remote that has lost connection to garage door opener, you need to reprogram remote to opener using Learn button on opener motor unit, which syncs rolling code security. First, locate Learn button on garage door opener motor unit hanging from ceiling, near antenna wire and light cover, often under light lens, colored yellow, purple, red, or green depending on model and year, such as LiftMaster, Chamberlain, Craftsman. Press and release Learn button briefly, LED will light steady for 30 seconds indicating ready to learn. Within 30 seconds, press and hold button on remote you want to resync until opener light blinks, clicks, or garage door moves slightly, indicating remote synced. For multiple remotes, repeat for each remote. For keypad, press Learn button and then enter PIN on keypad and press Enter. If remote was previously programmed and suddenly stopped working, try replacing battery first, as dead battery causes desync appearance. Check if wall console is in lock mode that disables remotes, indicated by blinking light, so press and hold lock button for 5 to 10 seconds to unlock before resyncing. If remote still won't sync after replacing battery and pressing Learn, remote may be damaged or incompatible, requiring replacement costing 30 to 60 dollars. Ensure antenna wire on opener hangs down straight for range. Test remote after resync by pressing button to open and close door several times to confirm sync holds.