Mercedes Benz GL450 owners have reported 1 problem related to transfer case (under the power train category). The most recently reported issues are listed below.
Upon acceleration a clunking sound comes from within the transfer case. This vehicle has @ 148,000 mainly highway miles on it. This transfer case problem is a premature failure and is reminiscent of a similar problem mercedes had @ 12 years ago.
See
all problems of the 2012 Mercedes Benz GL450
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