Toyota Lexusc Owner's Handbook Manual page 514

"
1 Higher 2 Lower
3 Height control indicator lights
D Changing the mode
You can change the easy access mode to the "LO", "N" or "HI"
mode when the engine is running.
To change easy access mode to "LO" mode: Push the
height select switch on the "Y" (higher) side once.
To change easy access mode to "N"mode: Push the height
select switch on the "Y" (higher) side twice.
In the following cases, the vehicle's height is automatically
changed to "N" (normal) mode.
D The vehicle speed exceeds approximately 12 km/h (8 mph).
D The engine is restarted and the easy access mode is
canceled.
STARTING AND DRIVING
To change easy access mode to "HI" mode: Push the height
select switch on the "Y" (higher) side for three times.
The "LO", "N" or "HI" indicator light blinks while the vehicle's
height changes. When the vehicle's height reaches the "LO",
"N" or "HI" mode, the indicator light remains on.
If the vehicle's height is changed frequently, the raising or
lowering will take longer than usual. There is no problem in the
electronically modulated air suspension.
CAUTION
If you select easy access mode, check under the vehicle
to make sure nothing that could damage the vehicle or
no one who could be injured is there and that the
underbody of the vehicle does not touch the ground
before the engine is stopped.
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