A large percentage of water will flow off the windshield area into the air inlet grille panel drain system and then down the outside on the air inlet grille panel to the underside of the vehicle. To ensure that the air inlet grille panel water management system performs properly, the air inlet grille panel, and drains must not be blocked with debris.
In the graphic below the gray arrows show the water flow direction in the air inlet grille panel and drains system.
The air inlet grille panel is located in front of the windshield.