Normal Operation
WARNING: This page is about a different car, the 2006 Ford Pickup, 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Once the operator selects a gear position, the detents in the shift lever and transfer case should maintain the selection. If the transfer case does not stay in the selected position, systematically check the shift linkage and internal components of the transfer case.