Lexus GS 450h 2008 Owner's Manual page 40

1-3. Opening, closing and locking the doors and trunk
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Effective range (areas within which the electronic key is detected)
38
When locking or unlock-
ing the doors
The system can be oper-
ated when the electronic
key is within about 2.3 ft.
(70 cm) of an outside door
handle. (Only the doors
detecting the key can be
operated.)
When unlocking the trunk
The system can be oper-
ated when the electronic
key is within about 2.3 ft.
(70 cm) of the trunk
release button.
When starting the hybrid
system or changing modes
The system can be oper-
ated when the electronic
key is inside the vehicle.