I live near Toronto and I programmed the homelink easily, just follow the instructions in the manual. Hold the button on the mirror till it flashes and then press the button on the remote (my garage door opener is a Liftmaster). If that doesn't work you may have to press a code button on the opener itself and push the button in the car at the same time ( you need two people). My cousin has an SLK and a Chamberlain garage door opener and that's what he had to do. Hope yours works !!!