The HVAC blower motor may fail. This is commonly caused by water entry through the cabin air filter areas during heavy rain or snow. Failed blower motors should be replaced. Our technicians tell us there is no special fix for this issue at this time.
Car Problem Reports
Mercedes-Benz R320 CDI HVAC Blower Motor May Fail
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Visitor, 2007 Mercedes-Benz R320 CDI, 130,000 mi
dealer says it's over $700 to replace. i'm taking it to a local shop instead.
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