Your vehicle may have a passenger compartment air filter. It is located behind the glove box and can be accessed after removing the glove box from its housing.
The filter traps most of the pollen from air entering the module. Like your engine's air cleaner/filter, it may need to be changed periodically.
To change the passenger compartment air filter, use the following steps:
View the air flow arrows on the filter before installing to ensure you install the filter correctly.