My FiL has a side-by-side that lost all power. This is to show him why.
5 relays, left to right:
Headlight
Fan
EFI
Fuel Pump
Chassis
Press the brake pedal (the switch near the relays) to illuminate the brake light circuit of the taillights (right side of grid is rear of machine).
The unconnected 10A fuse (I use lamps as fuses in this app) is labeled "Drive" in the fuse box lid. This likely powers the electronic 4WD system of the 2022 Polaris Ranger 570.