I've done a search around and found loads of problems where the fans have failed, but nothing specific to my problem. My fan works, in that betweens settings 1-4 I can hear the fan blowing as it should, but no matter where I have the circular air flow adjuster, no air comes out of anywhere. The car has done this a number of times before, but each time it magically fixes itself. As it's coming into winter, and condensation is becoming a problem I need to fix this myself. It's almost like there's a blockage between the fan exit and the distribution channels. Does anyone know where the fan is / how easy it is to access? Thanks in advance.