Lexus SC 430 2004 Manual page 34

Unlocking the trunk lid
11sa07b
When you keep the button pushed for about 1 second, you
can unlock the trunk lid.* One beep sounds.
This function does not work when the ignition switch is in the
"ON" position.
NOTE: *The operation method can be changed. Ask your
Lexus dealer for details.
Sounding an alarm*
11sa08b
When you push the "LOCK" button for about 2 to 3
seconds, an alarm sounds to deter any person trying to
break into or damage your vehicle.
If you want to stop the alarm, push any button.
This function does not work when the ignition switch is in the
"ON" position.
NOTE: *The alarm can be set not to sound. Ask your Lexus
dealer for details.
KEYS AND DOORS
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