I have a 99' RX300 and on the driver side visor there is 3 buttons, how do you program it to work with the existing garage door opener? The brand of the garage opener is a Chamberlain. So is it possible? Do I need a special external device from Lexus? Etc...

 

Check out this recent post from another model forum, I believe it should work the same way as yours.

https://www.clublexus.com/forums/sho...d.php?t=199810

 

Good looking out Dave, much appreciated!!!...