I'm having a few customers dealing with my fan fail unit running above 85 C and triggering my over heat warning (three flashes).
The problem is the fuse box is pretty well insulated for heat generation. Some owners in the past have installed a little CPU fan to vent the fuse box but I just had another idea. Make a cover of aluminum. Probably 1/8 inch thick or maybe 3/32 inch would work and you need some spacers around the edges to hold it up to the OEM thickness of the plywood cover. It may even save some weight. The top carpet still insulates heat transfer a little but I wonder how well this would help.