[stickyfinguhz]

friday i drove my car, used the defrost and it was fine. but saturday i went and started my car, turned on the defrost and now i hear a clicking noise once every second while it is on. the defrost seems to be working fine and if i turn off my defrost and use the other controls like regular heat circulating and everything and i hear no sound. just when i press the main defrost will i hear the clicking noise and it seems to be coming right from my steering column. any ideas what this could be?