Have been having problems with my A/C being stuck on fresh air for the past few weeks.

Jumped under the glovebox last night to have a look around and noticed a white curvy door is just moving around freely. I put the a/c on, tried changing between recirc and fresh and the door didn't move.

Left the door in the top position and now I finally have a/c that is cold and there is no air coming into the car when the a/c is off. But it falls down when I go over bumps, giving me the same problem.

I tried to take the plastic surround off that us behind the glove box. Its 4 screws and a few clips. But it does not want to come off. Couldnt get it off to have a look at this vent door, so I just wedged a piece of carboard behind the vent door keeping it in the up position to I can get recirc air.

The buttons for the recirc/fresh on the climate control have no effect. When I press either of them I can hear a few noises, but nothing happens.

I think the problem is the vent door, not anything electrical behind the CC cluster.

Any ideas to what it is? Is the door controled electrically or vacuum? or what...

Thanks!

either the control arm is moving on the shaft or the shaft has snapped

it's vacuum operated