Lexus 2004 GX470 Owner's Manual page 117

EXTERIOR EQUIPMENT
When installing the cap, turn the cap clockwise until you
hear a click. When you hear the click, the cap is fully
closed.
CAUTION
D Make sure the cap is installed securely to prevent fuel
spillage in the event of an accident.
D Use only a genuine Lexus fuel tank cap for
replacement. It is designed to regulate fuel tank
pressure.
NOTICE
To prevent damage to the cap, apply force only in the
turning direction to the cap. Do not pull or pry it.
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