belt Lexus GS450h 2007 Using the audio system / LEXUS 2007 GS450H FROM JULY 2006 PROD. (OM30A05U) Workshop Manual

5
When trouble arises
441
5-2. Steps to take in an emergency
*2: Open door warning buzzer:
P. 4 4 9
*3: Driver's and front passenger’s seat belt reminder buzzer:
The driver’s and front passenger’s seat belts reminder sounds to alert the driver
and front passenger that his or her seat belt is not fastened. The buzzer sounds
intermittently for 10 seconds after the ve hicle has reached a speed of at lest 12
mph (20 km/h). Then, if the seat belt is still unfastened, the buzzer will sound in
a different tone for 20 more seconds.
Warning lightWarning light/DetailsCorrection procedure
Master warning light
A buzzer sounds and the
warning light comes on and
flashes to indicate that the
master warning system has
detected a malfunction.
Take appropriate action in
accordance with the message
displayed on the multi-infor-
mation display.
■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.

442
5-2. Steps to take in an emergency
■SRS warning light
This warning light system monitors the following:
●The airbag sensor assembly
●Front airbag sensors
●The curtain shield airbag sensors
●The side and curtain shield airbag sensors
●The occupant detection sensor
●The front passenger occupant classification ECU
●“AIRBAG ON” and “AIRBAG 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
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire
pressure warning reset switch does not turn off the tire pressure warning light.
■The tire pressure warning light may turn on due to natural causes
The tire pressure warning light may turn on due to natural causes such as natural air
leaks or tire inflation pressure changes caus ed by temperature. In this case, adjust-
ing the tire inflation pressure will turn off the warning light.

5
When trouble arises
479
5-2. Steps to take in an emergency
NOTICE
■To prevent damaging the vehicle
Hybrid vehicles cannot be push-started.
■When handling jumper cables
Be careful that the jumper cables do not become tangled in the cooling fan or any
of the belts when connecting or disconnecting them.

5
When trouble arises
481
5-2. Steps to take in an emergency
■Overheating
In the following situations, your vehicle may be overheating.
●The message “HYBRID SYSTEM OVERHEAT” is displayed on the multi-infor-
mation display.
●The engine coolant temperature gauge enters the red zone or a loss of power is
experienced.
●Steam is coming from under the hood.
CAUTION
■To prevent an accident or injury when in specting under the hood of your vehicle
●Keep hands and clothing away from the fan and engine drive belt while the hybrid
system is running.
●Do not loosen the radiator cap while the hybrid system and radiator are hot. 
Serious injury, such as burns, may resu lt from hot coolant and steam released
under pressure.
Add coolant if required.
Water can be used in an emer-
gency measure if coolant is
unavailable. ( P. 4 9 0 )
Have the vehicle checked at your nearest Lexus dealer as soon as pos-
sible.
STEP6

488
6-1. Specifications
Engine
Fuel
Electric motor (Traction motor)
Hybrid battery (Traction battery)
Model2GR-FSE
Ty p e6-cylinder V type, 4-cycle, gasoline
Bore and stroke3.70  3.27 in. (94.0  83.0 mm)
Displacement210.9 cu.in. (3456 cm3)
Drive belt tensionAutomatic adjustment
Fuel typePremium unleaded gasoline only
Octane Rating91 (Research Octane Number 96) or higher
Fuel tank capacity17.2 gal. (65 L, 14.3 lmp.gal.)
Ty p ePermanent magnet synchronous motor
Maximum output147 kW
Maximum torque275 N•m (28.0 kgf•m, 202.8 ft•lbf.)
Ty p eNickel-Metal hydride battery
Vo l t a g e7.2 V/module
Capacity6.5 Ah (3HR)
Quantity40 modules
Overall voltage288 V

501
6-1. Specifications
6
Vehicle specifications
Tire section namesBead
Sidewall
Shoulder
Tread
Belt
Inner liner
Reinforcing rubber
Carcass
Rim lines
Bead wires
Chafer
Uniform Tire Quality GradingThis information has b een prepared in accordance with regulations
issued by the National Highway Tr affic Safety Administration of the
U.S.A. Department of Transportation.
It provides the purchasers and/or pr ospective purchasers of Lexus vehi-
cles with information on uniform tire quality grading.
Your Lexus dealer will help answer an y questions you may have as you read
this information.
■ DOT quality grades
All passenger vehicle tires must co nform to Federal Safety Require-
ments in addition to these grades. Quality grades can be found where
applicable on the tire sidewall between tread shoulder and maximum
section width.
For example: Treadwear 200 Traction AA Temperature A

518
Alphabetical index
Alphabetical index
A/C (Air conditioning system) ........ 192
ABS (Anti-lock Brake System) ........ 164
Active stabilizer suspension 
system...................................................... 164
Air conditioning system (A/C) Air conditioning filter .......................399
Automatic air conditioning 
system .................................................... 192
Airbags Airbag operating conditions........... 69
Airbag precautions for your 
child...........................................................72
Airbag warning light ........................ 439
Curtain shield airbag 
precautions .......................................... 75
General airbag precautions ............72
Locations of airbags............................ 66
Modification and disposal of 
airbags .................................................... 76
Side airbag precautions .....................72
Side and curtain shield airbags 
operating conditions ....................... 69
SRS airbags ............................................. 66
Alarm ............................................................. 61
Antenna ....................................................209
Armrest .....................................................323
Ashtrays ..................................................... 316
Audio system Antenna ..................................................209
Cassette player..................................... 212
CD player/changer ........................... 216
DVD information ................................. 251
DVD player/changer...................... 232
DVD video/audio ............................. 235
MP3/WMA disc ............................... 224
Optimal use.......................................... 255
Radio ........................................................ 203 Steering switches .............................. 259
Video CD .............................................. 247
Automatic headlight leveling 
system ...................................................... 124
Automatic light control system......... 122
AVS (Adaptive Variable 
Suspension System) ...........................163
BA (Brake Assist)...................................164
Back-up lights Wattage ................................................. 494
Battery 12 volt battery .......................................379
Checking................................................379
Hybrid battery (Tra ction battery) .... 5
If the 12 volt battery is 
discharged .........................................476
Preparing and checking 
before winter...................................... 176
Bluetooth
®.............................................. 263
Brake Fluid .......................................................... 378
Parking brake............................................111
Care Exterior ................................................... 352
Interior..................................................... 354
Seat belts ............................................... 355
Cargo capacity........................................ 172
Cargo hooks .......................................... 327
CD player/changer............................. 232
Chains ......................................................... 177
Child-protectors...................................... 26
Child restraint system (CRS)
Definition ...................................................82
Installation ................................................ 85
A
B
C

519
Alphabetical index
Installing CRS with lower 
anchorages .......................................... 89
Installing CRS with seatbelts .......... 85
Installing CRS with top straps ........ 90
Child safety Airbag precautions .............................. 72
Child restraint system ........................ 82
Child-protectors....................................26
How your child should wear 
the seatbelt ............................................43
Installing child restraints .................... 85
Moon roof ................................................ 54
Power window lock switch ............. 50
Power window precautions.............. 51
Removed electronic key battery 
precautions ....................................... 402
Seat belt comfort guide....................... 41
Seat belt precautions...........................44
Seat heater precautions .........319, 321
Trunk............................................................32
Cigarette lighter ..................................... 317
Cleaning Exterior ................................................... 352
Interior..................................................... 354
Seat belts ............................................... 355
Clock........................................................... 314
Coin holder ............................................ 309
Compass ................................................. 334
Condenser............................................... 377
Console box........................................... 307
Cooling system Engine overheating ..........................480 Cruise control
Cruise control........................................129
Dynamic radar cruise control........132
Cup holders ............................................. 310
Curtain shield airbags............................ 66
Customizable features ........................ 510
Daytime running light system ........... 123
Defogger Rear window ......................................... 199
Side mirror.............................................. 199
Dimension................................................486
Dinghy towing ......................................... 182
Display Energy flow ................................................. 6
Multi-information display .................. 119
Touch screen ........................................ 184
Trip information ................................... 120
Warning message ............................. 444
Do-it-yourself maintenance .............363
Door courtesy lights ............................304
Door pocket............................................... 311
Doors Door lock .................................................. 25
Rear door child protector ................ 26
Driver's seat belt reminder light .....440
Driving Correct posture..................................... 64
Procedures ..............................................96
DVD player/changer.......................... 232
Electronic key Replacing battery................................ 401
When the electronic key battery 
is discharged..................................... 474
D
E

520
Alphabetical index
Emergency, in case ofIf a warning light turns on ..............438
If a warning message is 
displayed ............................................ 444
If the hybrid system will not 
start.......................................................... 471
If the shift lever cannot be  shifted from P ....................................472
If the 12 volt battery is 
discharged ....................................... 476
If you have a flat tire .............. 460, 461
If you lose your keys......................... 473
If you think something is 
wrong ................................................... 435
If your vehicle becomes stuck.....483
If your vehicle needs to be 
towed ................................................... 428
If your vehicle overheats ............... 480
When the electronic key battery 
is discharged .................................... 474
Energy monitor............................................ 6
Engine Compartment .....................................369
Hood........................................................366
How to start the hybrid system ... 103
If the hybrid system will not 
start.......................................................... 471
Overheating........................................ 480
Power switch ........................................ 103
Engine compartment cover .............370
Engine coolant temperature 
gauge......................................................... 112
Engine/inverter coolant Capacity .................................................490
Checking ............................................... 376
Preparing and checking before winter ...................................... 176 Engine oil
Capacity ................................................ 489
Checking................................................. 371
Preparing and checking 
before winter...................................... 176
Engine oil maintenance data ........... 374
EPS (Electric Power Steering) .........164
Event data recorder ............................ 436
First-aid kit storage belt ..................... 327
Floor mats ................................................ 326
Fluid Brake ....................................................... 378
Washer................................................... 382
Fog lights Switch ........................................................ 125
Wattage ................................................. 494
Foot light .................................................. 304
Front passenger occupant 
classification system ............................. 77
Front passenger's seat belt 
reminder light ..................................... 440
Front seats Adjustment ...............................................33
Driving position memory ..................35
Front turn signal lights Wattage ................................................. 494
Fuel Capacity ................................................ 488
Fuel gauge ................................................ 112
Gas station information ................. 528
Information ........................................... 495
Refueling ................................................... 55
Messages .............................................. 456
Fuel filler door ........................................... 55
Fuses .......................................................... 403
F

522
Alphabetical index
Replacing light bulbs.......................... 421
Turn signal lever .................................... 110
Vanity lights ............................................313
Wattage.................................................. 494
Maintenance Do-it-yourself maintenance ......... 363
General maintenance .....................359
Maintenance data..............................486
Maintenance requirements .......... 357
Meter Instrument panel light control .........113
Meters .........................................................112
Micro dust and pollen removal 
mode ........................................................ 195
Mirrors Inside rear view mirror........................47
Side mirror heater ...............................199
Side mirrors ............................................. 48
Vanity mirrors........................................313
Moon roof ................................................... 52
MP3 disc ...................................................... 224
Multi-information display ....................... 119
Odometer................................................... 112
Oil Engine oil ................................................. 371
Opener Fuel filler door......................................... 55
Hood........................................................366
Trunk ........................................................... 29
Outside rear view mirrors Adjusting and folding ......................... 48
Driving position memory.................. 35
Outside temperature display............ 315
Overhead console .............................. 308 Overheating, Engine
............................. 480
Parking brake..............................................111
Parking lights Replacing light bulbs ......................... 421
Switch .........................................................122
Wattage ................................................. 494
PCS (Pre-Collision System) ..............165
Personal lights........................................305
Power meter.............................................. 112
Power outlet ............................................ 318
Power windows ........................................ 50
Radar cruise control..............................132
Radiator .....................................................377
Radio .............................................................. 203
RDS (Radio Data System) ................ 205
Rear sunshade ....................................... 324
Rear turn signal lights Replacing light bulbs ......................... 421
Wattage ................................................. 494
Rear view monitor system ................. 160
Rear window defogger ........................199
Replacing Electronic key battery ....................... 401
Fuses ........................................................ 403
Light bulbs .............................................. 421
Reporting safety defects for 
U.S. owners............................................516
Seat belts Adjusting the seat belt ..........................41
Automatic Locking Retractor 
(ALR) ....................................................... 42
Child restraint system 
installation ............................................. 85
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