* To defog the windshield. When you turn on the defroster, the dashboard vents blow warm air onto the windshield to help melt ice and snow.
* To heat the cabin. The dashboard vents can also be used to heat the cabin of the car. When you turn on the heater, the vents blow warm air into the cabin.
* To cool the cabin. The dashboard vents can also be used to cool the cabin of the car. When you turn on the air conditioner, the vents blow cold air into the cabin.
* To circulate air. The dashboard vents can also be used to circulate air in the cabin of the car. This can help to prevent the air from becoming stale and uncomfortable.
The dashboard vents in a 1996 Buick Park Avenue are an important part of the climate control system. They help to keep the windshield clear, the cabin heated or cooled, and the air circulating.
