I've found them temperamental at best. It's definitely as simple as holding the transmitter button in the car and then the garage remote to get the frequency programmed. But the distance from the remote to car transmitter needs to be right. I recall having to try different distances and angles to finally get it accepted. Once you get the frequency right, it's just a matter of pressing the LEARN button on the back of your garage dor opener and pressing the transmitter button in the car.
Keep trying. It's most likely *not* you!
Nick / TopDownInFL (sans the "top down")
2012 650 Coupe - Alpine White / Black Interior / M Package / Premium Sound
2008 650i Convertible - Monaco Blue / Saddle Brown Pearl Leather / Premium Sound / Sport / Cold / Comfort Access / Lane Departure / HD Radio / Sat Radio
2004 645Ci Convertible - Reverse Sensors / Reverse Camera
/ Retro iPod
2005 545i Sedan
2003 330Ci Convertible
2001 330Ci Coupe
1998 323i Convertible
1995 318i Sedan