Julio,
I purchased my first Mercedes about a month ago and am having a blast fixing all the little things on it. The car itself is excellent its just the bells and whistles on it that have the issues. My air sampler pump sounds so funky that I thought it needed an exorist sprinkle water and lay hands on it. lol. Mine sounds like crickets sometimes, grinds loudly when I steer right... its crazy. Haven't got to it yet but when I do Ill let ya know if it can be revived or not. Later Julio, Johnny