I just took my ML500 in for the 1k check. The shop foreman and I drove it and he agreed there is a slight noise there. They ran it on the rack and determined it is the front differential. By mutual agreement we have decided to run it for a few more thousand miles. If it gets worse they will change it. Being an old gear head I know it will, and they have always taken care of me with both my ML's so Iknow they'll do what they say! I drove 2 other 500's when I was there and they were silent. Maybe Gilly can help us here. Gilly I thought ZF always ran these units in on a test stand before they were shipped to this country, or do they just spot check them. I can't believe they would put out a bad one, but they did this time!
