fuel Lexus GS450h 2010 Using The Audio System / LEXUS 2010 GS450H (OM30C81U) User Guide

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1-1. Hybrid system
GS_HV_U (OM30C81U)
February 12, 2010 8:52 am
Hybrid warning message
A message is automatically displayed when a malfunction occurs in the
hybrid system or an improper operation is attempted.
If a warning message is shown on
the multi-information display and
the touch screen, read the mes-
sage and follow the instructions.
(P. 543)
■If a warning light comes on or a warning message is displayed, or the 12 volt bat-
tery is disconnected
The hybrid system may not start. In that case, try to start the system again. If the
“READY” light does not come on, contact your Lexus dealer.
■Running out of fuel
When the vehicle has run out of fuel and the hybrid system cannot be started, refuel
the vehicle with at least enough gasoline to make the low fuel level warning light
(P. 536) go off. If there is only a small amount of fuel, the hybrid system may not
be able to start. (The minimum amount of fuel to add to make the low fuel level
warning light go out is about 2.9 gal. [11 L, 2.4 Imp.gal.] when the vehicle is on a level
surface. This value may vary when the vehicle is on a slope.)
■Hybrid battery (traction battery)
The hybrid battery (traction battery) has a limited service life. The lifespan of the
hybrid battery (traction battery) can change in accordance with driving style and
driving conditions.

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1-1. Hybrid system
GS_HV_U (OM30C81U)
February 12, 2010 8:52 am
CAUTION
■Road accident cautions
Observe the following precautions to reduce the risk of injury.
●Pull your vehicle off the road, put the shift lever in “P”, apply the parking brake,
turn the hybrid system off.
●Do not touch the high voltage parts, cables and connectors.
●If electric wires are exposed inside or outside your vehicle, an electric shock may
occur. Never touch exposed electric wires.
●If a fluid leak occurs, do not touch it as it may be strong alkaline electrolyte from
the hybrid battery (traction battery). If it comes into contact with your skin or
eyes, wash it off immediately with a large amount of water or if possible, boric
acid solution. Seek immediate medical attention.
●If a fire occurs in the hybrid vehicle, leave the vehicle as soon as possible. Never
use a fire extinguisher that is not meant for electric fires. Using even a small
amount of water may be dangerous.
●If your vehicle needs to be towed, do so with the rear wheels raised. If the wheels
with the electric motor (traction motor) are on the ground when towing, the
motor may continue to generate electricity. This may cause an electricity leakage
leading to a fire. (
P. 5 2 3 )
●Carefully inspect the ground under the vehicle. If you find that liquid has leaked
onto the ground, the fuel system may have been damaged. Leave the vehicle as
soon as possible.

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GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
1-6. Refueling
Opening the fuel tank cap
Perform the following steps to open the fuel tank cap.
■Before refueling the vehicle
Turn the “POWER” switch OFF and ensure that all the doors and
windows are closed.
■Opening the fuel tank cap
Press the fuel filler door opener
switch.
The screen to the left is dis-
played for a short period. Wait
until “REFUEL READY” is dis-
played, then proceed to the next
step.
Turn the fuel tank cap slowly to
open.
STEP1
STEP2
STEP3

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1-6. Refueling
1
Before driving
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
Closing the fuel tank cap
After refueling, turn the fuel tank
cap clockwise until you hear a
click. The cap will revolve slightly in
the opposite direction once
released.
Hang the fuel tank cap on the
back of the fuel filler door.STEP4

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1-6. Refueling
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
■Fuel types
Use premium unleaded gasoline. (Octane Rating 91 [Research Octane Number
96] or higher)
■Fuel tank capacity
Approximately 17.2 gal. (65 L, 14.3 Imp.gal.)
■Open fuel filler door warning
P. 5 5 4
■When the fuel filler door opener switch is inoperable
If the fuel filler door opener switch is inopera-
ble, contact your Lexus dealer to service the
vehicle. If you must refuel your vehicle, you
can open the fuel filler door manually as
shown. The system to lower internal pressure
may not be functioning so you must turn the
cap slowly as the pressure releases. In addi-
tion, fuel may spill out during refueling. Fill the
fuel tank carefully and slowly.

97
1-6. Refueling
1
Before driving
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
CAUTION
■When refueling the vehicle
Observe the following precautions while refueling the vehicle. Failure to do so may
result in death or serious injury.
●Touch the vehicle or some other metal surface to discharge any static electricity.
Sparks resulting from discharging static electricity may cause the fuel vapors to
ignite.
●Always hold the grips on the fuel tank cap and turn it slowly to remove it. 
A whooshing sound may be heard when the fuel tank cap is loosened. Wait until
the sound cannot be heard before fully removing the cap. In hot weather, pressur-
ized fuel may spray out of the filler neck and cause injury.
●Do not allow anyone that has not discharged static electricity from their bodies to
come close to an open fuel tank.
●Do not inhale vaporized fuel.
Fuel contains substances that are harmful if inhaled.
●Do not smoke while refueling the vehicle.
Doing so may cause the fuel to ignite and cause a fire.
●Do not return to the vehicle or touch any person or object that is statically
charged.
This may cause static electricity to build up, resulting in a possible ignition hazard.
■When replacing the fuel tank cap
Do not use anything but a genuine Lexus fuel tank cap designed for your vehicle.
Failure to do so may cause a fire or other incident which may result in death or seri-
ous injury.

98
1-6. Refueling
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
NOTICE
■Refueling
●Do not spill fuel during refueling. 
Failing to do so may damage the vehicle, such as causing the exhaust systems to
operate abnormally or damaging fuel system components or the vehicle’s
painted surface.
●Finish refueling within 30 minutes. If more than 30 minutes passes, the internal
valve closes. In this condition, fuel may overflow during the refueling process.
Press the fuel filler door opener switch again.

141
2-1. Driving procedures
2
When driving
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
■Driving in the rain
●Drive carefully when it is raining, because visibility will be reduced, the windows
may become fogged-up, and the road will be slippery.
●Drive carefully when it starts to rain, because the road surface will be especially
slippery.
●Refrain from high speeds when driving on an expressway in the rain, because
there may be a layer of water between the tires and the road surface, preventing
the steering and brakes from operating properly.
■Breaking in your new Lexus
To extend the life of the vehicle, the following precautions are recommended to
observe:
●For the first 186 miles (300 km):
Avoid sudden stops.
●For the first 621 miles (1000 km):
• Do not drive at extremely high speeds.
• Avoid sudden acceleration.
• Do not drive continuously in the low range in the “S” position.
• Do not drive at a constant speed for extended periods.
■Drum-in-disc type parking brake system
Your vehicle has a drum-in-disc type parking brake system.
This type of brake system needs bedding-down of the brake shoes periodically or
whenever the parking brake shoes and/or drums are replaced.
Have your Lexus dealer perform the bedding-down.
■Operating your vehicle in a foreign country
Comply with the relevant vehicle registration laws and confirm the availability of the
correct fuel. (P. 5 9 0 )
■When starting on an incline
The hill-start assist control may operate. (P. 2 1 4 )

154
2-1. Driving procedures
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
Transmission
Select a shift position appropriate for the driving conditions.
■Shifting the shift lever
While the “POWER” switch is in ON mode, depress the brake
pedal and move the shift lever.
■Shift position uses
*1: To improve fuel consumption and reduce noises, set the shift lever in the
“D” position for normal driving.
*2: By selecting shift ranges using “S” mode, you can control engine braking
forces.
Shift positionFunction
PParking the vehicle or starting the hybrid system
RReversing
NNeutral
DNormal driving*1
S“S” mode driving*2 (P. 1 5 6 )

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2
When driving
GS_HV_U (OM30C81U)
February 1, 2010 11:03 am
2-2. Instrument cluster
Gauges and meters
The units used on the speedometer may differ depending on the target
region.
The following gauges, meters and display illuminate when the
“POWER” switch is in ON mode.
Power meter
Displays the instantaneous output from the hybrid system is approximate
kilowatts.
Speedometer
Displays the vehicle speed.
Fuel gauge
Displays the quantity of fuel remaining in the tank.
Engine coolant temperature gauge
Displays the engine coolant temperature.
Multi-information display
P. 1 6 8