Condensation may develop in the heater case which can cause a musty odor from the heating, ventilation and AC (HVAC) system. Our technicians tell us the drain system should be checked for debris. In addition, a cleaner is available for the heater case.
Odor from HVAC system on Volkswagen CC VR6
6 people reported this problem
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When I turn on the AC I get this weird odor.
Problem has not been fixed. They told me they're waiting for a special "machine" to cleanse the system.