Transfer box interlock (where fitted)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Land Rover Discovery, 2003 Land Rover Discovery, 2002 Land Rover Discovery, 2001 Land Rover Discovery, and 2000 Land Rover Discovery. However, it is still accessible from the selected car via links, so may be relevant.
On automatic gearbox models, a transfer box interlock solenoid is controlled by the IDM to prevent transfer box shift lever being moved out of high or low range unless certain conditions have been satisfied. The IDM controls the operation of the transfer box relay which is located in the passenger compartment fuse box.