The 2001 Nissan Xterra has 3 recalls, the most serious being a rear wheel bearing that can corrode and fail, potentially causing the entire wheel assembly to separate from the vehicle while driving.
Water can enter the rear axle housing through a poorly sealed ABS sensor opening, and over time that moisture corrodes the wheel bearing from the inside. If the bearing fails completely, the wheel can detach, which raises the risk of a crash. The fuel system recalls, which appear to be the same underlying defect filed separately, involve a fuel tank inlet shutter valve that does not seal properly. Under certain conditions, particularly in high ambient heat or when winter-blend gasoline is being dispensed, fuel can spill out of the filler inlet while the tank is being filled. That spilled fuel near a hot engine or ignition source is a fire concern, though the most immediate danger is the liquid spilling on the owner or the ground during refueling.