The fusebox is a sometimes troublesome aspect of the Range Rover. I as a rule, carry duplicate green and yellow relays in my glove box. These relays are prone to failure when exposed to high heat or when under continous load.
The fusebox is also located in close proximity to the Engine Coolant resovior. This has been know to cause corrosion problems with the interior of the fusebox. One might think that the fusebox is a simple PCB board with sockets for each of the relayes and fuses. Well one would be very wrong. The fusebox is an insanely complex double board design that in my opinion is unserviceable.