1999 Lexus LX 470 User Guide 1 - Page 204

STARTING AND DRIVING (b) Shifting procedure To shift between unlock and lock modes in "H", push the center differential lock button. To shift 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 Never move the four-wheel drive control lever if wheels are slipping. Stop the slipping or spinning before shifting. 31X014b NOTICE For normal driving on dry and hard surface roads, unlock the center differential. To prevent damage to the center differential lock system, do not push the center differential lock button when the vehicle is cornering or when its wheels are spinning freely off the ground. If the indicator light does not go off when unlocking the center differential, drive straight ahead while accelerating or decelerating, or drive in reverse. 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. Before using the rear differential lock system, first shift the four-wheel drive control into "L". If this has no effect, additionally use the rear differential lock system also. CAUTION Do not use the rear differential lock in the conditions other than above. Large steering effort and careful cornering control will be required. 188