Can someone help me with this? We have a gate that opens and shuts with a remote that looks just like a garage door opener. We have the openers in our work vehicles but not our personal vehicles. I tried setting up Homelink through my model 3 but can't seem to get it to work. There is no red button to press at gate to put it in sync mode. I tried the remote in front of the bumper and the lights don't flash but when I get back in the car it says it was programmed but it doesn't work. Other employees have set it up in their cars so I know it works.