Why is my garage door not responding to remote?

Your garage door not responding to remote can be due to several common causes related to remote battery, programming, lock mode, interference, and opener issues that prevent signal from being received. First, check remote battery, as dead or weak battery is most common cause, causing reduced range or no response, so replace battery, typically coin cell or AAA, costing few dollars. Remote may have lost programming due to power outage, logic board reset, or pressing Learn button too long erasing memory, so reprogram remote by pressing Learn button on garage door opener motor unit hanging from ceiling and pressing remote button within 30 seconds until opener light blinks. Check if wall console is in lock mode, as many LiftMaster and Chamberlain wall consoles have lock button that disables remotes for security, indicated by blinking light on console, so press and hold lock button for 5 to 10 seconds to unlock and restore remote function. Radio frequency interference from LED light bulbs installed in opener that are not garage door opener rated can block remote signals, as some LEDs emit interference at opener frequency, so replace with approved bulbs or remove bulbs to test. Antenna wire on opener motor unit that hangs down may be damaged, coiled, or not hanging straight, reducing range, so ensure it hangs down straight. Remote may be damaged from dropping or water exposure, requiring replacement costing 30 to 60 dollars. Try remote close to opener to test range, as distance too far can cause failure.