Acura 2013 ZDX - Manual (Page 271)

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Climate Control System Maintenance
Dust and Pollen Filter
The climate control system is equipped with a dust and pollen filter that collects
pollen, dust, and other debris in the air. The Maintenance Minder
TM messages will let
you know when to replace the filter.
We recommend that you replace the dust and pollen filter sooner when using your
vehicle in areas with high concentrations of dust.
1 Dust and Pollen Filter
Using an air freshener may reduce the deodorizing
effect of the dust and pollen filter, and may reduce its
life.
If the airflow from the heating and cooling system
deteriorates noticeably, and the windows fog up
easily, the filter may need to be replaced. Please
contact a dealer for replacement.