I was curious, so I just checked my car. In that menu, I do not have that option. I don't have automatic high beams, if that's what it is. Certainly looks like that's what it is from the icon....
Do you have the "high beam assistant," as I think it's called? Do you have a late build '06? (mine is an early build) Do you have iDrive? Anything in your manual about High Beam Assistant?