[timmahh]

If this is of any help, here is my approach to programming homelink in the car. Could be out of date at this point.

-Older openers that have physical DIP switches to change the code. You hold the remote within a few inches from the mirror and click the button on the opener remote a few times until it syncs.

-Newer openers that operate on rolling codes. Two-step process. I first sync up the remote & homelink button using the same process as the DIP switch remote. Once complete, you then press the Learn button on your opener, and proceed with pressing the previously trained button on your mirror to get the two in sync.

My understanding is that with a rolling code opener, you first have to tell it *how* to talk to your opener (hence the remote pairing), then you establish the trust between your homelink mirror and the opener itself (via the learn button). Could be wrong, but it's worked pretty well for me in my cars.