Flat screwdriver, but its probably not the fuse if it works at all, and the box should be on the drivers side strut mount and is about as big as a tootsie roll. The one by the fuse box on the firewall kinda is for the Aux fan. I would say check the cabin sniffer motor, or the regulator, or the brushes in the motor itself wear down from always rotating (which they have kits to replace the brushes online).