Replacing a wireless garage door opener is a easy task, that much like replacing the remote on a TV must be compatible the system, and be programmed with the unit.
The first thing to do is to look at your garage door. On the side of the garage door unit there should be a manufacturer name and a model number.
This can be Googled to see if you can simply buy a replacement remote.
The second option is to buy a universal garage door opener that will then need to be programmed to work with your system.
Types Of Garage Door Remotes
Garage door remotes come in two programming styles.
The first type is where the garage door has a LEARN/Smart button that after pressing both the LEARN/Smart button on the unit and the remote control will sync together to work.
The second type has a DIP switch package where certain dip switches are placed to the ON position to make it work with the garage door. This type is used with older garage doors.
The most common type is the LEARN/Smart button type where the LEARN/Smart button is pressed on the unit itself and than also on the remote which codes it to work.
Here is a universal garage door remote that has both the DIP switches and LEARN/SMART button. Since it has both it will work with most any type of garage door, we will use it as an example to walk step-by-step through a setup.
Clicker KLIK1U Universal 2-Button Garage Door Opener Remote
How To Program a Garage Door Remote
Others universal remotes will work similar.
The remote has a cover that is taken off and a Smart/LEARN button is located inside.
It also has a DIP switch package to work with older style garage door units. DIP switches are used on units prior to the early 1990s when the style changed.
Using the Learn Button Method For Setup
Find the name of the manufacture and model number on your garage door unit.
Remove the panel to the controls
Locate the LEARN button on the unit. Here it is the purple button.
Look at the instructions which will have color codes. This unit is a Chaberline as is indicated by the color purple.
The remote control LEARN button is pressed until the LED light comes on.
Next press the Smart/LEARN button on the garage door unit until the LED light comes on.
On the remote select the button you want to program. For this unit (Chamberlain) as per the instructions the selected button is pressed three times.
The last step is to press the program button on the remote again to assign that code to the remote. The light will go off after it is coded.
It should now open the garage door or possibly the light. If it does only turn on the light than program another button following the same steps for the door.