check engine light Lexus GS450h 2007 Hybrid system / LEXUS 2007 GS450H THROUGH JUNE 2006 PROD. OWNER'S MANUAL (OM30727U)

TABLE OF CONTENTSIndex
iv
3-4. Using the hands-free 
system........................................ 263
Hands-free system ...................... 263
Using the Bluetooth
® 
phone ............................................ 268
Setting the hands-free 
system ............................................. 281
3-5. Using the interior lights .......... 307 Interior lights list............................ 307
3-6. Using the storage features ...... 311 List of storage fe atures.................. 311
3-7. Other interior features............ 317 Sun visors.......................................... 317
Vanity mirror ................................... 318
Clock .................................................. 319
Outside temperature 
display ........................................... 320
Ashtrays ............................................ 321
Cigarette lighter ........................... 322
Power outlet ................................... 323
Seat heaters ................................... 324
Seat heaters and 
ventilators .................................... 326
Armrest ........................................... 328
Rear sunshade ............................... 329
Floor mats......................................... 331
Trunk features................................ 332
Garage door opener .................. 334
Compass.......................................... 339 4-1. Maintenance and care............ 344
Cleaning and protecting the 
vehicle exterior .......................... 344
Cleaning and protecting the 
vehicle interior............................ 346
4-2. Maintenance.............................. 349 Maintenance requirements ..... 349
General maintenance ................. 351
Emission inspection and 
maintenance (I/M) 
programs ...................................... 354
4-3. Do-it-yourself 
maintenance............................ 355
Do-it-yourself service 
precautions ................................. 355
Hood................................................. 358
Positioning the jack .................... 359
Engine compartment................... 361
Tires ................................................... 375
Tire inflation pressure................ 385
Wheels............................................. 389
Air conditioning filter................... 391
Electronic key battery ................ 393
Checking and replacing 
fuses ............................................... 395
Headlight aim.................................... 411
Light bulbs ........................................ 413
4Maintenance and care

101
2-1. Driving procedures
2
When driving
Starting the hybrid system
Modes can be switched by pressing the power switch when carrying the
electronic key on your person. (The hybrid system can be started in any
mode by operating the switch at the same time as depressing the brake
pedal.)
■Changing power switch mode
“OFF” mode
“A C C ” m o d e
Some electrical components
such as the audio system can be
used.
“IG-ON” mode
All electrical components can
be used.
■Starting the hybrid system
Check that the parking brake is set.
Turn off unnecessary lights and accessories.
Check that the shift lever is set in “P”.
Sit in the driver’s seat and firmly depress the brake pedal.
The power switch indicator turns green.
Press the power switch.
After a few seconds, the
“READY” light will flash and
come on with a beep sound.
The vehicle can move when the
“READ
Y” light is on, even if the
engine is stopped.
STEP1
STEP2
STEP3
STEP4
STEP5

113
2-2. Instrument cluster
2
When driving
NOTICE
■To prevent damage to the engine and its components
The engine may be overheating if the engine coolant temperature gauge is in the
red zone (“H”). In this case, immediately stop the vehicle in a safe place. Check the
engine after it has cooled completely. (P. 475)
■To activate the light sensitivity function properly
Do not affix a sticker or window tint to the rear window glass, or put an object
behind the rear seat.

Maintenance and care4
343
4-1. Maintenance and care ......... 344Cleaning and protecting the 
vehicle exterior........................ 344
Cleaning and protecting the 
vehicle interior......................... 346
4-2. Maintenance ........................... 349 Maintenance 
requirements ............................ 349
General maintena nce .............. 351
Emission inspection and 
maintenance (I/M) 
programs ................................... 354 4-3. Do-it-yourself

maintenance......................... 355
Do-it-yourself service 
precautions ............................... 355
Hood .............................................. 358
Positioning the jack .................. 359
Engine compartment ................ 361
Tires ................................................. 375
Tire inflation pressure .............. 385
Wheels .......................................... 389
Air conditioning filter ............... 391
Electronic key battery ............. 393
Checking and replacing 
fuses ............................................. 395
Headlight aim ................................ 411
Light bulbs..................................... 413

413
4-3. Do-it-yourself maintenance
4
Maintenance and care
Light bulbs
You may replace the following bulbs yourself. For more information about
replacing other light bulbs, contact your Lexus dealer.
■Prepare a replacement light bulb.
Check the wattage of the light bulb being replaced. ( P.
4 8 8 )
■ R
emove the engine compartment cover if necessary.
 P.
3 6 2
■ F
ront bulb locations
■Rear bulb locations
Parking light
Headlight high beam
Rear turn signal light Back-up light

472
5-2. Steps to take in an emergency
■To prevent 12 volt battery discharge
●Turn off the headlights and the audio system while the hybrid system is off.
●Turn off any unnecessary electrical components when the vehicle is running at a
low speed for an extended period, such as in heavy traffic, etc.
■When the 12 volt battery is removed or discharged
The hybrid system may not start. ( P. 3 7 2 )
Also, the following systems must be initialized.
●Po w e r w i n d o w s (P. 5 3 )
●Moon roof (P. 5 6)
●Variable gear ratio steering (P. 1 5 1 )
●Tire pressure warning system (P. 3 7 7 )
●Intuitive parking assist (P. 1 5 1)
Maintain the engine speed on th e second vehicle and turn the
power switch to the “IG-ON” mo de, then start the vehicle’s
hybrid system.
Make sure the “READY” light co mes on. If the light does not
come on, contact your Lexus dealer.
Once the vehicle’s hybrid system has started, remove the
jumper cables in the exact reverse or
der in which they were
connected.
Once the hybrid system starts, have the v
ehicle checked at your Lexus
dealer as soon as possible.
STEP5
STEP6
STEP7

512
Alphabetical index
Emergency, in case ofIf a warning light turns on .............. 430
If a warning message is 
displayed ............................................ 436
If the hybrid system will not 
start........................................................ 466
If the shift lever cannot be 
shifted from P ................................... 467
If the 12 volt battery is 
discharged ......................................... 471
If you have a flat tire ............ 455, 456
If you lose your keys......................... 468
If you think something is 
wrong ....................................................427
If your vehicle becomes stuck..... 478
If your vehicle needs to be 
towed ................................................... 420
If your vehicle overheats ................ 475
When the electronic key battery 
is discharged .................................... 469
Energy monitor............................................ 6
Engine Compartment ....................................... 361
Hood........................................................ 358
How to start the hybrid system
.....101
If the hybrid system will not 
start........................................................ 466
Overheating......................................... 475
Power switch .......................................... 101
Engine compartment cover ............. 362
Engine coolant temperature 
gauge.........................................................110
Engine/inverter coolant Capacity ................................................. 484
Checking ............................................... 368
Preparing and checking 
before winter ...................................... 174 Engine oil
Capacity ................................................ 483
Checking............................................... 363
Preparing and checking  before winter...................................... 174
Engine oil maintenance data ........... 366
EPS (Electric Power Steering) ......... 162
Event data recorder ............................ 428
First-aid kit storage belt ..................... 332
Floor mats .................................................. 331
Fluid Brake ....................................................... 370
Washer.................................................... 374
Fog lights Switch ........................................................ 123
Wattage ................................................. 488
Foot light .................................................. 308
Front passenger's seat
belt 
reminder light ..................................... 433
Front seats Adjustment ............................................... 34
Driving position memory .................. 36
Front turn signal lights Wattage ................................................. 488
Fuel Capacity ................................................ 482
Fuel gauge ................................................ 110
Gas station information ................. 520
Information ........................................... 489
Refueling ................................................... 58
Messages .............................................. 450
Fuel filler door ........................................... 58
Fuses .......................................................... 395
F

517
Alphabetical index
Electric power steering warning light ..................................... 432
Low fuel level....................................... 432
Malfunction indicator lamp ............ 431
Master warning light ........................ 433
Open door ........................................... 432
Pre-collision system ......................... 432
Seat belt reminder light .................. 433
SRS airbags ............................................ 431
Tire pressure warning light........... 433
Warning messages Anti-lock Brake System (ABS) ... 442
Brake Assist (BA) .............................. 442
Dynamic radar 
cruise control ................................... 440
Engine oil level .................................... 445
Engine oil maintenance.................. 445
Engine oil pressure............................ 437
Headlight ............................................... 438
Hill-start assist control...................... 442
Hood ....................................................... 443
Hybrid system .......................... 437, 447
Intuitive parking 
assist .............................. 439, 446, 451
Moon roof ............................................. 444
Open door ........................................... 443
Parking brake ...................................... 444
Pre-Collision System .......... 439, 446
Refueling ................................................ 450
Rear lights system ............................. 438
Smart access system with 
push-button start............................ 452
Steering lock ............................ 439, 454
Tire pressure warning 
system...................................... 438, 446
TRAC (Traction control 
system) .................................................442 Trunk ........................................................
444
VGRS (Variable Gear Ratio 
Steering) ............................................. 442
VSC/ECB (Vehicle Stability 
Control/Electronically Controlled 
Brake system) .................................. 442
Washer fluid ......................................... 444
Washer Checking ............................................... 374
Preparing and checking  before winter ......................................174
Switch......................................................... 124
Washing and waxing ........................... 344
Weight Cargo capacity .................................... 170
Load limits ............................................... 173
Weight.................................................... 480
Wheels ..................................................... 389
Window glasses ...................................... 52
Window lock switch ............................... 52
Windows Power windows ..................................... 52
Rear window defogger.................... 199
Washer ..................................................... 124
Windshield wipers Position...................................................... 176
Windshield wipers .............................. 124
Winter driving tips .................................. 174
Wireless remote control Locking/Unlocking ............................. 23
Replacing the battery....................... 393
WMA disc ............................................... 224