Check the batteries: Make sure that the batteries in your remote are fresh and installed correctly. 2. Check the range: Try standing closer to the garage door to see if the remote works from a closer distance. If it does, the problem may be with the range of the remote. 3. Check for interference: Radio frequency interference can sometimes cause problems with garage door remotes. Try moving any electronic devices that might be causing interference away from the garage door opener. 4. Check for damage: Inspect the remote for any visible signs of damage, such as cracks or water damage. 5. Reprogram the remote: If you have recently replaced the battery or made other changes to the garage door opener, you may need to reprogram the remote. Consult the manual for your specific model to learn how to do this. 6. Check the garage door opener: If none of the above steps fix the problem, the issue may be with the garage door opener itself. Check to make sure that it is properly plugged in and that the electrical outlet is working. If the opener seems to be functioning properly, you may need to have it professionally serviced.