1996 Lexus LX 450 Owners Manual - Page 150

STARTING AND DRIVING FRONT AND REAR DIFFERENTIAL LOCK SYSTEM ! CAUTION Do not use the front and rear differential locks in the conditions other than above. Large steering effort and careful cornering control will be required. Especially use of the front differential lock in addition to the rear will result in extremely difficult steering control and may cause the vehicle to spin suddenly during acceleration or engine braking. The front and 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 or either right or left pair of the 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 front and rear differential lock system also. " Lock rear differential To lock the rear differential, push and turn the switch clockwise until it clicks. If this does not help, turn the switch fully clockwise to lock the front differential in addition. Be sure to stop the wheels before locking the differentials. For easy locking, turn the lock switch and gently depress the accelerator pedal. 139