1998 Toyota Land Cruiser Owners Manual - Page 107

(b) Shifting procedure SHIFTING BETWEEN "H" (UNLOCK) AND "H" (LOCK) To shift between unlock and lock modes in "H", push the center differential lock button. SHIFTING BETWEEN "H" AND "L" Stop the vehicle, put the transmission into "N" and move the four- wheel drive control lever. Rear differential lock system CAUTION Do not use the rear differential lock in the conditions other than above. Large steering effort and careful cornering control will be required. CAUTION Never move the four -wheel drive control lever if wheels are slipping. Stop the slipping or spinning before shifting. The rear differential lock system is provided for use only when wheel spinning occurs in a ditch or on a slippery or ragged surface. This differential lock system is effective in case one of the rear wheels is spinning. First shift the four- wheel drive control into "L" with the center differential locked to see if you can move forward. If this does not work, use the rear differential lock system also. 107