Lexus 2014 LX570 Owner's Manual page 325

In the following cases the 4-Wheel AHC will not operate
■
The brake pedal has been depressed for a few seconds or longer while the vehi-
●
cle is stopped.
Vehicle height control has not been frequently used.
●
The suspension fluid temperature is lower than -22°F (-30°C).
●
There is ice on the suspension.
●
Driving on bumpy roads which may cause the suspension to fully elongate.
●
If the steering wheel is abruptly turned more than 3/4 of a revolution with the
●
center differential lock system activated.
Cold weather operation
■
It may take longer for the vehicle height to change if the suspension fluid tempera-
ture drops below 5°F (-15°C).
The 4-Wheel AHC does not operate when the suspension fluid temperature drops
below -22°F (-30°C).
In this case, even if the height select switch is pressed, the vehicle height will not
●
change. Once the vehicle has been driven for a short time and the suspension
fluid has been warmed to within normal operating limits, the 4-Wheel AHC will
begin operating and the vehicle height will automatically change to the selected
mode.
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 driving for a short time longer
to select the desired vehicle height.
Parking and stopping tips
■
If you immediately stop the engine after off-road driving, 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.
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.
LX570_OM_OM60L21U_(U)
2-4. Using other driving systems
2
325