Which kind of Hella horns is that? I can’t figure it out from the video. Is it the Twin Trumpet edition or the Super Tone? I installed a loud marine horn on my X3. Stock horns were not making enough noise when on a highway. I decided to keep them but also to add a separate button for new horns...
How is it possible that it unprogrammed itself? I'd be seriously concerned in that case because it can mean someone had something to do with this. My very good friend, who's a lawyer, had the unfortunate incident of his garage being robbed. Just like you, the garage door unprogrammed itself. Of...