Dodge Grand Caravan 2019 Owner's Manual page 90

88 GETTING TO KNOW YOUR VEHICLE
Outside Air Intake Operating Tips Chart
Make sure the air intake, located directly in front of the
windshield, is free of obstructions such as leaves. Leaves
collected in the air intake may reduce airflow, and if they
enter the plenum, they could plug the water drains. In
winter months, make sure the air intake is clear of ice,
slush, and snow.
A/C Air Filter
The climate control system filters out dust and pollen from
the air. Refer to an authorized dealer for filter replacement
instructions.