My heater fan blows in every vent except the floor ones. Cold Quebec winters prompt me to look into this. My Haynes manual says that under the rotary control knobs I should find a couple of screws to set the panel free. Well there is not. There is just a blueish plastic thing where I'm suppposed to find screws. I assume I should just pry the panel but I'll first submit my case to you guys, before breaking anything. Anybody took this kind of panel out?
Here is what I have to work on:







