If they are working correctly the problem might be because of the safety sensors.
Problems programming garage door remote.
Sometimes garage door remote or opener mishaps are minor and a professional can quickly fix them by adjusting your garage door or opener.
Other issues could be a bad battery or even an led bulb causing.
To be sure that the batteries are always good use name brand quality batteries instead of discount brands.
Hold down the two outside buttons on your car s remote to clear any previous programming.
If the remote is programmable follow the programming steps found in the owner s manual for the garage door opener.
The most common cause of garage door remote control failure are weak or dead batteries.
There are multiple reasons they can stop working.
Reprogram the remote if the remote has a row of small switches inside example make sure the position of the switches match the position of the switches on the back of the garage door opener.
The easiest and first step i suggest is trying to sync your remote again.
Press the button in your car that you want to use for controlling the garage door plus the button on the garage door remote simultaneously until the car s led lights flash.
Meanwhile others are more severe and indicate a pressing repair need.