Lexus RX400h2006 Owner's Manual page 179

EXTERIOR EQUIPMENT
If the pressure in the fuel tank is high, a message "PLEASE
WAIT NOW OPENING" will appear on the multi−information
display. It may take up to 10 seconds if the internal pressure
is high. The segments in the display decrease to indicate the
time left.
When the pressure lowers, a message "REFUEL READY" will
appear and the fuel filler door will open.
CAUTION
When opening the cap, do not remove the cap quickly.
In hot weather, fuel under pressure could cause injury
by spraying out of the filler neck if the cap is suddenly
removed.
152
2. Turn the cap slowly counterclockwise and remove it.
The removed cap can be stored on the backside of the fuel
filler door.
It is not unusual to hear a slight swoosh when the cap is
opened.
When reinstalling, turn the cap clockwise until you hear a click.
If the cap is not tightened securely, the malfunction indicator
lamp will come on. Make sure the cap is tightened securely.
The indicator lamp will go off after driving the vehicle several
times. If the indicator lamp does not go off, contact your Lexus
dealer as soon as possible.
If you leave the fuel filler door open and start the hybrid system,
a message "CLOSE FUEL LID" will appear. Make sure the fuel
filler door is closed.