Defrost settings work incorrectly?

[05ram4x4]

I've noticed that when I put the heater controls on defrost, air still comes out the floor vents and defrost vents as if it was on that setting. What could be the issue?

 

[HolyRamBatman]

I'm drawing a blank on what your problem is so here is a bump for you.

 

[MegaMouseGW]

Sounds like the mixer door is broken. Heater Treater has a fix and this is a known issue with the doors. CHeck out this video on YouTube: www.dirtyshirt.info: Blend Door Repair - 2005 Dodge Ram 1500 Pickup Truck - YouTube

There are plenty of other videos on YouTube if this one does not give the information that pertains to your truck.