warning light Lexus GS450h 2007 Do-it-yourself maintenance / LEXUS 2007 GS450H THROUGH JUNE 2006 PROD. OWNER'S MANUAL (OM30727U)

TABLE OF CONTENTSIndex
ii
1-1. Hybrid system .................................. 2Hybrid system ...................................... 2
1-2. Key information ............................ 12 Keys ....................................................... 12
1-3. Opening, closing and locking 
the doors and trunk ................... 14
Smart access system with  push-button start ........................... 14
Wireless remote control .............. 23
Doors.................................................... 26
Trunk.................................................... 30
1-4. Adjustable components ............ 34 Front seats .......................................... 34
Driving position memory 
system .............................................. 36
Head restraints................................. 39
Seat belts ............................................ 42
Steering wheel.................................. 48
Inside rear view mirror.................. 49
Outside rear view mirrors .......... 50
1-5. Opening and closing the 
windows and moon roof .......... 52
Power windows................................ 52
Moon roof ......................................... 55 1-6. Refueling ....................................... 58
Opening the fuel tank cap.......... 58
1-7. Anti-theft system ......................... 62 Hybrid vehicle immobilizer 
system ............................................... 62
Alarm.................................................... 64
Theft prevention labels 
(U.S.A.) ............................................. 66
1-8. Safety information ....................... 67 Correct driving posture ............... 67
SRS airbags ....................................... 69
Child restraint sy stems ................ 80
Installing child restraints ............... 83
2-1. Driving procedures..................... 94 Driving the vehicle .......................... 94
Starting the hybrid system .......... 101
Transmission ................................... 104
Turn signal lever............................. 108
Parking brake ................................. 109
2-2. Instrument cluster ...................... 110 Gauges and meters ...................... 110
Indicators and warning lights ..... 114
Multi-information display............. 117
1Before driving
2When driving

1
2
3
4
5
6
7
v
5-1. Essential information .............. 420If your vehicle needs to be 
towed.............................................. 420
If you think something is 
wrong ............................................. 427
Event data recorder .................... 428
5-2. Steps to take in an 
emergency .............................. 430
If a warning light turns on or a 
warning buzzer sounds............... 430
If a warning message is 
displayed ....................................... 436
If you have a flat tire 
(Vehicles with run-flat 
tires) ................................................ 455
If you have a flat tire 
(Vehicles with standard 
tires) ................................................ 456
If the hybrid system will not 
start ................................................. 466
If the shift lever cannot be 
shifted from P .............................. 467
If you lose your keys ................... 468
When the electronic key  battery is discharged ............... 469
If the 12 volt battery is 
discharged .................................... 471
If your vehicle overheats ........... 475
If the vehicle becomes 
stuck................................................ 478 6-1. Specifications ............................ 480
Maintenance data ....................... 480
Fuel information ........................... 489
Tire information ............................ 492
6-2. Customization .......................... 500 Customizable features ............. 500
6-3. Initialization ............................... 505 Items to initialize .......................... 505
Reporting safety defects for 
U.S.A. owners............................ 508
Alphabetical index............................... 510
What to do if... ........................................ 518
5When trouble arises6Vehicle specifications
7For US owners
Index

9
1-1. Hybrid system
1
Before driving
■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 sy stem again. If the
“READY” light does not come on, contact your Lexus dealer.
CAUTION
■High voltage precautions
The vehicle has high voltage DC and AC systems as well as a 12 volt system. DC
and AC high voltage is very dangerous and can cause severe burns and electric
shock that may result in death or serious injury.
●Never touch, disassemble, remove or replace the high voltage parts, cables and
their connectors.
●The hybrid system will become hot after starting as the system uses high voltage.
Be careful of both the high voltage and the high temperature, and always obey
the caution labels attached to the vehicle.
●Never try to open the service plug acce ss hole located in the luggage compart-
ment. The service plug is used only when the vehicle is serviced and is subject to
high voltage.

59
1-6. Refueling
1
Before driving
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
■Fuel types
Use premium unleaded gasoline. (91 Octane Rating [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. 4 5 0

70
1-8. Safety information
Airbag system components
The main SRS airbag system components are shown above. The SRS air-
bag system is controlled by the airb ag sensor as
sembly. The airbag sen-
sor assembly consists of a safing sensor and an airbag sensor.
Occupant detection sensor
Front passenger’s seat belt
buckle switch
Knee airbag
Front passenger airbag
Curtain shield airbag
Front side airbag
Side and curtain shield airbag
sensor Curtain shield airbag sensor
SRS warning light
Rear side airbag (if equipped)
Driver airbag
Driver's seat belt buckle switch
Driver's seat position sensor
Airbag sensor assembly
Front airbag sensor
Curtain shield airbag
Can help protect primarily the head of fr
ont occupants and rear out-
board occupants.

When driving2
93
2-1. Driving procedures .................. 94Driving the vehicle ....................... 94
Starting the hybrid system ....... 101
Transmission ................................. 104
Turn signal lever .......................... 108
Parking brake ............................... 109
2-2. Instrument cluster.................... 110 Gauges and meters ................... 110
Indicators and warning 
lights................................................ 114
Multi-information display.......... 117
2-3. Operating the lights and 
windshield wipers ................. 120
Headlight switch ......................... 120
Fog light switch............................ 123
Windshield wipers and 
washer........................................... 124
Headlight cleaner switch ........ 126 2-4. Using other driving

systems .................................... 127
Cruise control .............................. 127
Dynamic radar cruise 
control ........................................ 130
Intuitive parking assist ............. 139
Rear view monitor system ...... 158
AVS (Adaptive Variable 
Suspension System) ................. 161
Driving assist systems................ 162
PCS (Pre-Collision 
System) ........................................ 167
2-5. Driving information................ 170 Cargo and luggage.................... 170
Vehicle load limits ....................... 173
Winter driving tips ...................... 174
Trailer towing................................. 179
Dinghy towing ............................. 180

114
2-2. Instrument cluster
Indicators and warning lights
The indicator and warning lights on the instrument cluster and center
panel inform the driver of the status of the vehicle’s various systems.
Instrument cluster
The units used on the speedometer and some indicators may differ depend-
ing on the target region.
Center panel

116
2-2. Instrument cluster
CAUTION
■If a safety system warning light does not come on
Should a safety system light such as ABS and the SRS airbag warning light not
come on when you turn to “IG-ON” mode, this could mean that these systems are
not available to help protect you in an accid ent, which could result in death or seri-
ous injury. Have the vehicle inspected by your Lexus dealer immediately if this
occurs.
■ Warning lights
Warning lights inform the driver of malfunctions in the indicated
vehicle’s systems. ( P. 4 3 0 )
*: These lights turn on when the power switch is turned to “IG-ON” mode
to indicate that a system check is being performed. They will turn off
after the hybrid system is on, or af ter a few seconds. There may be a mal -
function in a system if the lights do not come on, or turn off. Have the
vehicle inspected by your Lexus dealer.
(U.S.A.)(Canada)(U.S.A.)(Canada)
(U.S.A.)(Canada)(if equipped)
*******
*****
*

134
2-4. Using other driving systems
Example of follow-up cruising (when following a vehicle driving slower
than the set speed): When the speed is set to 62 mph (100 km/h) and
the v
ehicle ahead is driv ing at 50 mph (80 km/h)
The system continues follow-up cruising while adjusting for changes in the
speed of the vehicle ahead in order to maintain the vehicle-to-vehicle dis -
tance set by the driver.
Example of acceleration (when ther e are no longer vehicles driving
slower than the set speed in the lane ahead): When the speed is set to
6

2 mph (100 km/h) and the vehicle ahead driving at 50 mph (80 km/
h) is out of the lane
When the vehicle ahead of you executes a lane change, the system slowly
accelerates until the set vehicle speed is reached. The system then returns to
fixed speed cruising.
■Dynamic radar cruise control warn ing lights, messages and buzzers
Warning lights, messages and buzzers are us ed to in
dicate a system malfunction or
to alert you to the need for caution while driving. ( P. 4 4 0 )
■The dynamic radar cruise can be set when
●The shift lever is in “D” or the “4”, “5” or “6” range of “S”.
●Vehicle speed is between approximately 27 mph (43 km/h) and 87 mph (139
km/h).
■Accelerating
The vehicle can be accelerated normally. After acceleration, the set speed
r

esumes.

166
2-4. Using other driving systems
CAUTION
■The hill-start assist control may not operate effectively when
●On steep inclines.
●On icy surfaces.
■When the VSC is activated
The slip indicator light flashes and a warning buzzer sounds. Always drive carefully.
Reckless driving may cause an accident. Exercise particular care when the indica-
tor light flashes and a buzzer sounds.
■Replacing tires
Make sure that all tires are of the same size, brand, tread pattern and total load
capacity. In addition, make sure that the ti res are inflated to the specified tire pres-
sure level.
The ABS and VSC will not function correctly if different tires are fitted on the vehi-
cle. 
Contact your Lexus dealer for further info rmation when replacing tires or wheels.
■Handling of tires and suspension
Using tires with any kind of problem or modifying the suspension will affect the
VDIM, and may cause the system to malfunction.