ok heres how it works, SYNC works with a hard drive and USB input, usually not so much blutooth. the homelink rearview mirror hold the outside 2 buttons (not incl the on/off) for about 20 sec. the mirror will start blinking rapidly, then hold the one you want to use and the big button on your garage door for a few sec. if this does not work, do the same start, but at the time you hold the button you want to select, have someone push the "pair" button on the actually garage door motor. it should be a small red one. worst case scenario, bust out the gool ol manual. (and yes i work in the car buisness incase you havent guessed)
