Yes, the noise in my car was from the transfer box so it sounds like a different problem, but still, I would not accept the dealer's attempt to say it is normal. Insist on driving several of their demo cars and see if they exhibit the same noise and if not ask them to define normal for you!

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Marty D.

2013 C300 4Matic
1984 BMW 733i
2013 Lincoln MKz