For a quick reply, I would examine the relay. Are the contacts full of crud so that there is no current flow? Or is the coil burned up/over heated and is open, no longer closing the contacts? Pry the bad one (ones?) open and see if you can tell what caused the relay to go bad.
Since you just bought the car, is the wrong fuse installed, maybe one with a higher amperage? If so, that could point to a bad pump or some sort of abnormal load on that circuit. Someone may have "fixed" the problem with a bigger fuse, causing something else to fail.
2017 GT. Re-skinned the seats, painted hood vents black, JLT oil catch can, and all before I took delivery.
2009 v6 vert. My first mod - Sequential Taillights Kit! Ha ha.
Other minor items, X3/XF3 Tuner w/custom tune, GT Dual Exhaust Take-offs, FR 8.8” 3.73 limited slip, JLT Oil Separator, rear sway bar, strut tower brace.