fuel cap Lexus GS450h 2010 Using The Audio System / LEXUS 2010 GS450H OWNERS MANUAL (OM30C81U)

TABLE OF CONTENTSIndex
2
GS_HV_U (OM30C81U)
February 1, 2010 10:54 am
For your information ....................... 18
Symbols used throughout this 
manual ............................................... 21
1-1. Hybrid system
Hybrid system ................................... 24
1-2. Key information
Keys ...................................................... 36
1-3. Opening, closing and locking 
the doors and trunk
Smart access system with 
push-button start ........................... 41
Wireless remote control .............. 53
Doors.................................................... 55
Trunk..................................................... 60
1-4. Adjustable components 
(seats, mirrors, steering wheel)
Front seats .......................................... 65
Driving position memory 
system ............................................... 67
Head restraints................................. 72
Seat belts ............................................ 75
Steering wheel.................................. 82
Inside rear view mirror ................. 83
Outside rear view mirrors .......... 851-5. Opening and closing the windows
and moon roof
Power windows................................ 87
Moon roof .......................................... 90
1-6. Refueling
Opening the fuel tank cap........... 94
1-7. Theft deterrent system
Immobilizer system ........................ 99
Alarm................................................... 101
Theft prevention labels 
(U.S.A.) ........................................... 104
1-8. Safety information
Correct driving posture ............. 105
SRS airbags ..................................... 107
Front passenger occupant 
classification system .................... 119
Child restraint systems ............... 124
Installing child restraints ............. 128
1Before driving

Before driving1
23
GS_HV_U (OM30C81U)
January 28, 2010 11:26 am
1-1. Hybrid system
Hybrid system ............................ 24
1-2. Key information
Keys ............................................... 36
1-3. Opening, closing and locking 
the doors and trunk
Smart access system with 
push-button start ..................... 41
Wireless remote control ......... 53
Doors ............................................ 55
Trunk ............................................. 60
1-4. Adjustable components 
(seats, mirrors, steering 
wheel)
Front seats ................................... 65
Driving position memory 
system ........................................ 67
Head restraints .......................... 72
Seat belts ..................................... 75
Steering wheel .......................... 82
Inside rear view mirror ........... 83
Outside rear view mirrors ..... 851-5. Opening and closing the 
windows and moon roof
Power windows .......................... 87
Moon roof ................................... 90
1-6. Refueling
Opening the fuel tank cap ..... 94
1-7. Theft deterrent system
Immobilizer system .................. 99
Alarm........................................... 101
Theft prevention labels 
(U.S.A.).................................... 104
1-8. Safety information
Correct driving posture ....... 105
SRS airbags .............................. 107
Front passenger occupant 
classification system............. 119
Child restraint systems ......... 124
Installing child restraints....... 128

94
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

95
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.

228
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
2-5. Driving information
Cargo and luggage
Take notice of the following information about storage precautions, cargo
capacity and load.
●Stow cargo and luggage in the trunk whenever possible. Be sure all
items are secured in place.
●Be careful to keep the vehicle level. Placing the weight as far for-
ward as possible helps maintain vehicle balance.
●For better fuel economy, do not carry unnecessary weight.

453
4-2. Maintenance
4
Maintenance and care
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
Emission inspection and maintenance (I/M) programs
Some states have vehicle emission inspection programs which include
OBD (On Board Diagnostics) checks. The OBD system monitors the oper-
ation of the emission control system.
■If the malfunction indicator lamp comes on
The OBD system determines that a problem exists somewhere in
the emission control system. Your vehicle may not pass the I/M test
and may need to be repaired. Contact your Lexus dealer to service
the vehicle.
■Your vehicle may not pass the I/M test:
●When the 12 volt battery is disconnected or discharged
Readiness codes that are set during ordinary driving are erased.
Also, depending on your driving habits, the readiness codes may
not be completely set.
●When the fuel tank cap is loose
The malfunction indicator lamp comes on as a temporary mal-
function and your vehicle may not pass the I/M test.
■When the malfunction indicator lamp goes off after several driv-
ing trips
The error code in the OBD system will not be cleared unless the
vehicle is driven 40 or more times.
■If your vehicle does not pass the I/M test
Contact your Lexus dealer to prepare the vehicle for re-testing.

487
4-3. Do-it-yourself maintenance
4
Maintenance and care
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
.
■Tire inflation pressure check interval
You should check tire inflation pressure every 2 weeks, or at least once a month.
If equipped, do not forget to check the spare.
■Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure may result in the following:
●Reduced fuel efficiency
●Reduced driving comfort and tire life
●Reduced safety
●Damage to the drive train
If a tire needs frequent refilling, have it checked by your Lexus dealer.
■Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:
●Check only when the tires are cold.
If your vehicle has been parked for at least 3 hours and has not been driven for
more than 1 mile or 1.5 km, you will get an accurate cold tire inflation pressure
reading.
●Always use a tire pressure gauge.
The appearance of the tire can be misleading. In addition, tire inflation pressures
that are even just a few pounds off can degrade ride and handling.
●Do not bleed or reduce tire inflation pressure after driving. It is normal for the
tire inflation pressure to be higher after driving.
●Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle is bal-
anced.

538
5-2. Steps to take in an emergency
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
■If the malfunction indicator lamp comes on while driving
First check the following:
●Is your vehicle low on gas?
If it is, refuel the vehicle immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after taking several driving trips.
If the light does not go off even after several trips, contact your Lexus dealer as soon
as possible.
■Front passenger detection sensor and passenger seat belt reminder
●If luggage is placed on the front passenger seat, the front passenger detection
sensor may cause the warning light to flash, even if a passenger is not sitting in
the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the
warning light may not operate properly.
■SRS warning light
This warning light system monitors the following:
●The airbag sensor assembly
●Front airbag sensors
●The curtain shield and rear side airbag sensors
●The side and curtain shield airbag sensors
●The front passenger occupant classification ECU
●“AIR BAG ON” and “AIR BAG OFF” indicator lights
●The pressure sensor
●The belt tension sensor
●The seat belt buckle switches
●The driver’s seat position sensor
●The inflators
●The warning light
●The interconnecting wiring and power sources