P38 Fuse Box Repair and Replacement - rangerovers Dismantling and Repair. Introduction. The engine compartment fuse box on the 4.0/4.6/P38 is positioned behind the battery, so in addition to the usual heat cycling stress in the engine compartment, it is subject to corrosion problems due to corrosive vapors from the battery making their way into the fusebox. Fuse box Range Rover 2 - fusesdiagram Right hand seat fuse box Range Rover 2. Fuses 1 to 22 inclusive are located behind a cover on the side of the right hand seat. Lift the catch (arrowed) to disengage the cover. A label on the rear of the cover identifies the fuses and their ratings.