Mildew in Heater Box on Mercedes-Benz C350
Problem overview
The heating, ventilation and AC (HVAC) heater box is susceptible to mildew buildup. This can result in a musty odor from the HVAC system, most noticeable when the system is first turned on.
10 people reported this problem
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Mercedes-Benz C350 vehicles with this problem
Average mileage: 55,000 miles
(50,000 - 60,000)
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