hello,thre is a mini type fan behind the glove compartment guts,its making loud screatching noises,sounds like its got a bad ball bearing,its in a plastic housing with 2 rubber tubes coming from it,it was being very annoying so i jambed a stick in it to stop it,does anyone know why there is a mini barrel style fan built in the passengers side dashboard,behind the glove box area? i know mercedes items all serve there purpose,but what the hell could this 1 be for??,any help will be awesome.