2009 Lexus LX 570 Owners Manual - Page 247

2-4. Using other driving systems n In the following cases the 4-Wheel AHC will not operate l The brake pedal has been depressed for a few seconds or longer while the vehi- cle is stopped. (Except when the four-wheel drive control switch is in "L4".) l The suspension fluid temperature is lower than -22°F (-30°C). l Driving on bumpy roads which may cause the suspension to fully elongate. l If the steering wheel is abruptly turned more than 3/4 of a revolution with the center differential lock system activated. n Cold weather operation 2 It may take longer for the vehicle height to change if the suspension fluid temperature drops below -5°F (-15°C). When driving The 4-Wheel AHC does not operate when the suspension fluid temperature drops below -22°F (-30°C). l In this case, even if the height select switch is pressed, the vehicle height will not change. Once the engine has warmed the suspension fluid to within normal operating limits, the 4-Wheel AHC will begin operating and the vehicle height will automatically change to the selected mode. l When the suspension fluid is around -22°F (-30°C), the vehicle height may not be able to be raised, even if the 4-Wheel AHC is operating. In this case, pull the height select switch to "∨" then push to "∧" after further warming the engine to select the desired vehicle height. n Parking and stopping tips l If you immediately stop the engine after off-road driving, or park the vehicle for a long time, the vehicle height may gradually lower. When parking, make sure there is nothing under the vehicle that may come in contact with the underbody. The vehicle will return to the set height when the engine is started. l The vehicle height may change as the temperature changes when the engine is stopped. The vehicle will return to the set height when the engine is started. 249