im not aware of any rental place that leaves the 4x4 in opertaing order on the jeeps they rent. They are usually disabled some how.
there is a jeep rental place in moab Ill pull the info for you. I know the guy pretty good.
2001 XJ... 3.5" RE Lift, 31" BFGs, Bilsteins, Defender roof rack, Dana 30 HP front True Trac and 4.10s, Dana 44 Rear True Trac 4.10s, SYE, tom woods D/S, SUPER CLEAN LOW MILES