Lexus GS430 User Manual page 161

If the moon roof is left open when you turn the engine switch
to "OFF" mode and open the driver's door, a buzzer will remind
you to close the moon roof.
Retained accessory power operation: Even if the engine
switch is off, the moon roof can be operated until any of the
doors is opened (or for about 45 seconds).
EXTERIOR EQUIPMENT
Operating the moon roof from outside the
vehicle
The moon roof can be closed or opened using a mechanical
key.*
NOTE:
*This feature can be deactivated, or sliding open or tilting up
can be selected.
Ask your Lexus dealer for details.
G15020
Insert the mechanical key into the key hole on the driver's
door.
To close the moon roof: Turn the key in the locking direction
and hold it.
After the door is locked, the moon roof begins to close. To stop
in the middle, return the key.
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