When I hit the air controls on the heating unit from floor and vent to just floor, all the air comes out the defroster vents anyone know which vent door is not closing or hose is no longer connected? I can't seem to find itt or am missing it.

 

I just wanted to add another question to this cuz its sorta related.

my right vent blows cold at 32.0c
and when the floor is blowing, everything blows cold except the floor (I think)
and when the vent is on, the front blows cold too
it really sucks
anyone know whats going on?

 

Actually it doesn't suck it blows

 

There are little actuators (most of them are accessible I think), they open and close the doors. I hear one of mine clicking. They should be serviceable. Maybe someone can ask courtesy nissan how much they are.

 

I have kinda the same problem. When I have my heat on, and it set so that the air only comes out of the 4 vents that blow at your face or have it set to blow out of the vents at your feet and the ones blowing at your face, the far right vent(by the glove box) always blows cold air. Why? I am not talking about the defroster vents.