
512
5-2. Steps to take in an emergency
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
Have the malfunction repaired immediately.After taking the specified steps to correct the suspected problem, check
that the warning light turns off.
Warning lightWarning light/DetailsCorrection procedure
Open door warning light
(warning buzzer)*2
A door or the trunk is not
fully closed.
Check that all doors and the
trunk are closed.
Low fuel level warning light Remaining fuel
(Approximately 2.6 gal. [10
L, 2.2 Imp.gal.] or less)
Refuel the vehicle.
Driver’s seat belt reminder
light (warning buzzer)*3
Warns the driver to fasten
his/her seat belt.Fasten the seat belt.
(on the center panel)
Front passenger’s seat belt
reminder light
(warning buzzer)*
3
Warns the front passenger to
fasten his/her seat belt.
Fasten the seat belt.
Tire pressure warning light
When the light comes on:
Low tire inflation pressure.Adjust the tire inflation pres-
sure.
When the light comes on after
blinking for 1 minute:
Malfunction in the tire pres-
sure warning system.
Have the system checked by
your Lexus dealer.
GS450h_HV_U.book Page 512 Monday, April 27, 2009 10:10 AM

5
When trouble arises
525
5-2. Steps to take in an emergency
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
Wa r n i n g m e s s a g eDetailsCorrection procedure
The trunk is not fully
closed. flashes and a
buzzer sounds to indi-
cate that trunk is not fully
closed (with the vehicle
having reached a speed
of 3 mph [5 km/h]).
Close the trunk.
(Flashing)
(If equipped)
The moon roof is not fully
closed (with the
“POWER” switch is OFF
and the driver’s door
opened).
Close the moon roof.
(Flashing)
The parking brake is still
engaged (with the vehicle
having reached a speed
of more than 3 mph [5
km/h]).
Release the parking
brake.
The washer fluid level is
low.Add washer fluid.
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538
5-2. Steps to take in an emergency
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
Taking out the spare tireLift up the hook of the panel on the
trunk floor.
Secure the panel using the hook
provided. Then take out the tool
tray.
Loosen the center fastener that
secures the spare tire.
If the center fastener cannot be
turned by hand, use the wrench
that is stored in the trunk. (To
secure the tire, tighten the center
fastener by hand. Do not use the
wrench or other tools.)
STEP1
STEP2
STEP3
GS450h_HV_U.book Page 538 Monday, April 27, 2009 10:10 AM

550
5-2. Steps to take in an emergency
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
If the electronic key does not operate properly
Locking and unlocking the doors, unlocking the trunk and key linked
functions
Doors Using the mechanical key (
→P. 36)
in order to perform the following
operations:
Locks all doors
Closes the windows/moon roof
(turn and hold)
Unlocks the door
Tu r n i n g t h e k e y r e a r w a r d u n l o c k s
the driver’s door.
Turning the key once again unlocks
the other doors.
Opens the windows/moon roof
(turn and hold)
If communication between the electronic key and vehicle is interrupted
(
→P. 43) or the electronic key cannot be used because the battery is
depleted, the smart access system with push-button start and wireless
remote control cannot be used. In such cases, the doors and trunk can be
opened or the hybrid system can be started by following the procedure
below.
GS450h_HV_U.book Page 550 Monday, April 27, 2009 10:10 AM

5
When trouble arises
553
5-2. Steps to take in an emergency
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
If the 12 volt battery is discharged
The following procedures may be used to start the hybrid system if the 12
volt battery is discharged.
You can call your Lexus dealer or qualified repair shop.
If you have a set of jumper (or booster) cables and a second vehicle
with a 12 volt battery, you can jump start your Lexus following the steps
below.
Open the trunk using the mechanical key. (
→P. 5 5 1 )
Remove the left-hand cover in
the trunk.
Connect the jumper cables.STEP1
STEP2
STEP3
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591
6-2. Customization
6
Vehicle specifications
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
ItemFunctionDefault settingCustomizedsetting
Wireless
remote con-
trol
(
→P. 5 1 )
Unlocking operation
Driver’s door
unlocked in 1-
step, all doors
unlocked
in 2-step
All doors
unlocked in 1-step
Time elapsed before auto-
matic door lock function is
activated if door is not
opened after being
unlocked
60 seconds
OFF
30 seconds
120 seconds
Operation signal
(Emergency flashers)ONOFF
Operation signal
(Buzzer) ONOFF
Trunk unlocking functionONOFF
Trunk unlocking operationPush and holdPush twice
One short push
Pa n i c f u n c t i o nONOFF
Buzzer sounds when
pushing with any door
not closed
ONOFF
GS450h_HV_U.book Page 591 Monday, April 27, 2009 10:10 AM

605
Alphabetical index
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
CareExterior ................................................... 420
Interior..................................................... 423
Seat belts ................................................424
Cargo capacity ...................................... 227
Cargo hooks .......................................... 392
CD player/changer ............................. 274
Chains....................................................... 233
Child-protectors ..................................... 55
Child restraint system Definition.................................................... 121
Installation................................................ 125
Installing CRS with lower anchors ................................................. 126
Installing CRS with seatbelts ......... 128
Installing CRS with top straps ....... 133
Child safety Airbag precautions ............................. 110
Battery precautions..............449, 556
Child restraint system ......................... 121
Child-protectors................................... 55
How your child should wear
the seatbelt ............................................ 77
Installing child restraints ................... 125
Moon roof precautions ..................... 90
Power window lock switch ............. 85
Power window precautions............ 87
Removed electronic key battery
precautions ........................................473
Seat belt comfort guide......................75
Seat belt precautions.......................... 78
Seat heater precautions ................ 387
Trunk precautions .................................. 61
Cigarette lighter ................................... 384 Cleaning
Exterior....................................................420
Interior ..................................................... 423
Seat belts ................................................ 424
Clock .......................................................... 381
Coin holder ............................................. 377
Compass ................................................. 400
Condenser .............................................. 445
Console box ........................................... 374
Cooling system Engine overheating...........................557
Cruise control
Cruise control........................................179
Dynamic radar cruise control....... 183
Cup holders ............................................ 377
Curtain shield airbags.......................... 103
Customizable features ...................... 590
Daytime running light system ........... 170
Defogger Rear window ........................................256
Side mirror.............................................256
Dimension................................................ 564
Dinghy towing ........................................ 237
Display Energy flow .............................................. 29
Multi-information display ................ 166
Touch screen .......................................240
Trip information ....................................167
Warning message.............................. 519
Do-it-yourself maintenance ............. 432
Door courtesy lights ............................ 369
Door pocket............................................ 378C
D
GS450h_HV_U.book Page 605 Monday, April 27, 2009 10:10 AM

608
Alphabetical index
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
Inside rear view mirror ..........................82
Instrument panel light control........... 160
Interior lightsInterior lights......................................... 370
Wattage.................................................. 573
Intuitive parking assist .......................... 195
Jack
Positioning a floor jack.................... 436
Vehicle-equipped jack ...................536
Jack handle ..............................................536
Keyless entry............................................... 51
Keys If the electronic key does not operate properly ................... 550
If you lose your keys.........................549
Key number plate ................................. 35
Keys ............................................................. 35
Mechanical key...................................... 35
Power (ignition) switch.................... 148
Wireless remote control key ............ 51
Lexus Link System ................................404
Light bulbs Replacing ............................................... 492
Wattage.................................................. 573
Light sensitive optitron meter .............161
Lights Fog light switch..................................... 172
Headlights switch ................................169
Interior lights list.................................. 369
Replacing light bulbs........................ 492
Turn signal lever .................................. 156
Vanity lights ......................................... 380
Wattage.................................................. 573 Maintenance
Do-it-yourself ma intenance..........432
General maintenance..................... 428
Maintenance data ............................. 564
Maintenance requirements...........426
Meter
Instrument panel light control .......160
Meters....................................................... 159
Micro dust and pollen filter .............. 252
Mirrors Inside rear view mirror .......................82
Side mirror heater............................. 256
Side mirrors............................................. 83
Vanity mirrors .....................................380
Moon roof...................................................88
MP3 disc.................................................. 279
Multi-information display ....................166
Noise from under the vehicle...............18
Odometer ................................................ 159
Oil Engine oil............................................... 440
Opener
Fuel filler door .......................................... 91
Hood ....................................................... 435
Trunk........................................................... 59
Outer foot lights.................................... 369
Outside rear view mirrors Adjusting and folding ......................... 83
Mirror position memory ....................66
Outside temperature
display .................................................... 382
Overhead console ............................... 375
Overheating, Engine .......................... 557
J
K
L
M
N
O
GS450h_HV_U.book Page 608 Monday, April 27, 2009 10:10 AM