I found this diagram of the shutter in the Pacifica, but it does not match what I see in the car.
(The shutter is item 25.)
I do not see this shutter. I can plainly see a large radiator, what I assume is the A/C radiator, right behind the front intakes.
After looking at the engine compartment a bit, I'm mystified about the airflow. There are obviously two large intakes in front, above and below the main bumper beam. But how does the air get out?
* It doesn't go out the bottom. There is a belly pan covering all of that. The belly pan is probably a big part of getting road noise and drag coefficient down. Apparently a third of a vehicle's air drag is typically on the belly.
* Not much goes over the windshield. They've gone to some trouble to seal that gap.
The only openings I found were in the wheel wells, around where the suspension bits connect to the wheels. Those openings are smaller the intakes. That's backwards. Air expands and increases it's viscosity as it heats up, so on airplanes the exit vents are typically larger than the intakes.
If anyone gets a chance to actually see the shutters, I'd appreciate it if you could post a picture.