Musty and moldy odors can often be resolved by replacing the cabin air filter.
New vs Old Cabin air filter
Best Practices
The cabin air filter prevents pollen and dirt from entering the passenger compartment and should be replaced every year or every 10–15,000 miles.
The cabin air filter may also be referred to as a pollen filter, micro filter, or an air conditioning filter.
Some cabin filters include activated charcoal to help eliminate unwanted odors and cut down on the exhaust pollutants that enter through the climate control system. These types of filters also tend to be more expensive than regular filters.
