I was definitely following the instructions, just couldn't get past the beginning where you hold both buttons, the light flashes, and goes out after about ten seconds. Mine stayed on solid, for as long as I held them.
That said, I removed the battery and put it back in, for the third or fourth time, and suddenly the light would flash, allowing me to move forward. The sync worked fine without having to resort to the PIN.
Not sure what happened. I know it was the correct side down because all along I could get a light, just not flashing, when holding down both buttons. So, the FOB was getting power.
Oh, and thanks, Mr. C., for the quick reply to try to help!