How do you program garage buttons on my Audi?

There are three buttons on the top of my visor.

Really people, if you do not know how to help someone, just do not answer. what is the point?

There are two techniques based on the kind of security on your garage door opener.

Here is a link to Homelink's site. This page will let you to enter your model car and get particular information.

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Read the manual

I do not, you do.
Read the holders manual.

Hi..It kind of depends on the year Audi you have, but just you push and hold the outer buttons on the homelink buttons I and III till the red homelink LED begins to blink. Press and hold the button you want to program I, II, or III till the LED Blinks gradually. No go out of the car, and press the garage remote right in front of the right headlight. Watch to see the hazard lights blink three times. You is supposed to be done unless your garage door has a rolling code, and you can program another remote by pressing another homelink button I, II, or III, and repeat just the last part. See the link below for more information. I could also propose you do this all outside your garage, and be sure there's nothing in the way of you garage door, because it'll be activated many times while doing all this. Good luck.