Thread: frozen Air vent door

The vent flap door on my b-13, that sources the air under the dash must have gotten stuck/ frozen in place(lever/cable control on console can't budget it). In order to free it up, how do I get at it ? If I drop the blower motor under the dash, does that expose the door flap ?

On my B13 I only have to remove the, how u say, ''dash-cupboard'' then you can reach for the cable to flap the flapper shut but that is just a quick fix for a broken lever.