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 a cleaner is available for the heater case. Also, the drain system should be checked for debris.Google+
Car Problem Reports
Volkswagen Touareg TDI Odor from HVAC vents
Volkswagen Touareg TDI Problem
Average Mileage: 29,500 mi (24,000 mi - 35,000 mi)
Visitor, 2008 Volkswagen Touareg TDI, 35,000 mi
wet sock odor when hvac is started
Haven't found a way to fix this yet. But get a musty smell when I start the car.