Lexus LX 470 1998 Owner's Manual page 206

NOTICE
The normal mode is automatically selected when the vehicle
begins to move in the low mode. So be careful when you drive
in any place where the overhead height is limited.
(b) Automatic leveling function
Regardless of the number of occupants or the luggage loading
condition, the vehicle height is always automatically adjusted to
a fixed height in any mode.
However, the vehicle height cannot be raised if the vehicle load
exceeds the limits. (See page 190.)
(c) Vehicle height mode changing condition
To change the vehicle height, it is necessary to meet the following
3 conditions.
D The engine should be running.
D All the side doors and back door should be closed.
D The height control "OFF" indicator light should go off.
When selecting a mode with the four−wheel drive control lever at
"H", there is a vehicle speed limit. Refer to the following table.
STARTING AND DRIVING
f = The mode can be selected.
 = The mode cannot be selected.
Low
mode
f
At vehicle stoppage
Under about 30

km/h (19 mph)
About 30 km/h (19

mph) or over
In the following cases the active height control suspension does
not operate even if the above conditions are all met.
D The brake pedal has been depressed for longer than about 5
seconds with the vehicle stopped.
D The suspension fluid temperature is lower than −30_C (−22_F).
If the engine is warmed up, the suspension fluid temperature will
be raised as the inside of the engine compartment becomes
warmer. Then the active height control suspension becomes
operable.
D Driving on bumpy roads, which may cause the suspension to fully
elongate.
D The steering wheel is operated abruptly more than 3/4 turns with
center differential lock system activated.
Normal High
mode mode
f f
f f

f
189