I recently purchased this clicker for my LiftMaster Garage door opener. Once I found the directions for programming it, I had it working in minutes..LiftMaster Door Opener will open fine but not close. Learn how to fix this problem yourself without an expensive service from a garage door repair..The door opener itself is in a casing mounted on the garage ceiling or wall. On either side of the track, near the floor, you’ll find a pair of LED safety sensors that stop the door from moving when something is in the door opening..Liftmaster garage door openers come with a remote for operating the door from a vehicle. A code is preset on the motor so the door operates the first time you use the remote. As a homeowner, you should reset the opener to prevent outsiders from opening the door with a remote that’s set to a .