2007 Lexus LX 470 Owners Manual - Page 150

2-4. Using other driving systems n If the vehicle height does not change If the vehicle is loaded too heavily, or the undercarriage has come into contact with the road surface, the vehicle height cannot be raised/lowered. In this case, the indicator lights will change as follows: l The current mode indicator light will turn off, and the target mode indicator light will begin flashing. l The target mode indicator light will turn off, and the original mode indicator light will be lit once more. (The vehicle height does not change.) n In the following cases AHC will not operate l The brake pedal has been depressed for longer than 5 seconds while the vehi- cle is stopped. 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 It may take longer for the vehicle height to change if the suspension fluid temperature drops below -5°F (-15°C). AHC does not operate when the suspension fluid temperature drops below -22°F (-30°C). l In this case, the selected height mode indicator light will flash when the height mode select switch is pressed, however the vehicle height will not change. Once the engine has warmed the suspension fluid to within normal operating limits, 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 AHC is operating. In this case, push "t" then "s" on the height mode select switch after further warming the engine to select the desired vehicle height. 134