It might help to have the rear view mirror installed higher up than the stock position so you can tilt it up to make contact with the head liner. That is what I had to do to see out of the front windshield without the rear view mirror in my line of sight, it also helps with rear visibility as now I can see cars windshields behind me where before I could maybe only see their roofs if anything at all, and it should keep it from rattling so freely which might eliminate the problem with the buttons all together.