Hello to you all, it's me again with another riddle, 2012 XF 5.0 NA. I have a problem with a fuse. In the engine bay there is a 50 Amp fuse that don't want out. I have looked it up and it is a blue fuse with a clear cover . The diagram states that it is an engine management fuse. I think has a small screw holding it in. There are 2 red wires going into the fuse. It sits in the fuse box next to a relay. I will be a monkeys uncle but that screw doesn't leave room for an open end 9mm to turn the nut off. Does anyone know if there is a special wrench needed to remove the nut and washer holding the fuse into the box.. I am having problems with the car starting . I am getting a crank no start situation. I have a feeling that there has been some individuals removing or relocating some relays that may prevent my car from starting. I have a fuse diagram but I can't find a relay diagram. I seen that a forum member had made one but I believe it was for the super charged motor. Does anyone know where to find a RELAY diagram for the 2012 5.0 NA motor?? And that dang fuse is still stuck in the fuse box with its nut and washer.