According to the Tesla forums, there is a problem with the cars opening a garage door using HomeLink since the last software update. I am personally having this issue.
Behavior: the car fails to transmit the door opener command upon returning home.
Workaround: when you return home, boot the main screen by holding down both scroll fields on the steering wheel. Once rebooted, you should be able to open the garage door.
A future software update is anticipated to fix the problem.