Blend Door-How SHOULD it Function

[jrj3rd]

Not 100% sure (and car is not around to check) but would bet the computer is reading the interior and exterior temps when in auto mode and adjusting the door to get to set temp efficiently. When you push the actual center button you are putting it into a "manual" mode and it gives full heat (until you reach over and turn it down)

[ExplorerLyon]

Originally Posted by jrj3rd

Not 100% sure (and car is not around to check) but would bet the computer is reading the interior and exterior temps when in auto mode and adjusting the door to get to set temp efficiently. When you push the actual center button you are putting it into a "manual" mode and it gives full heat (until you reach over and turn it down)

I thought the same. However, while in "manual" mode, when I select air to floor, the blend door opens adding cool air. Seems the blend door should stay put and only the divertor should move to direct air to the floor instead of center.