Originally Posted by on0se
According to the directions ... I did:
1. Hold the 1st and 3rd homelink buttons on the mirror until blinks (20-30 seconds).
2. Hold the garage remote very close to the mirror and press the remote and the desired button the mirror at the same time for a bit until the mirror blinks (might have to double-check the directions on when to stop).
3. Physically get out of the car and find/click the "sync" button on your garage door motor-box-thing.
4. Go back to your car and press and hold the mirror button (that you chose earlier) for 2-5 seconds. Stop and repeat up to two more times until it works. (took me three times total).
The key thing is that even after I sync'd it - it's not just a single button click - I have to hold it down for a second or two. But that might just be my old system.
Hope this helps!
This is correct, it's a bit of a pain at first, but after configuring the first garage door I have, doing the second one took half the time it did the first. And it is a hold down for 1 or 2 seconds for it to send the signal.