2009 Lexus GS450h warning light

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GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
2-1. Driving proceduresDriving the vehicle ........................ 138
Power (ignition) switch ............... 148
Transmission ................................... 152
Turn signal lever ............................ 156
Parking brake ................................. 157
Horn.................................................... 158
2-2. Instrument cluster Gauges and meters ..................... 159
Indicators and warning lights............................... 163
Multi-information display ........... 166
2-3. Operating the lights and windshield wipers
Headlight switch ............................ 169
Fog light switch ............................... 172
Windshield wipers and washer............................................. 173
Headlight cleaner switch ........... 178 2-4. Using other driving systems
Cruise control ................................ 179
Dynamic radar cruise control............................................. 183
Intuitive parking assist ................. 195
Rear view monitor system ......... 210
AVS (Adaptive Variable Suspension System) .................. 213
Driving assist systems.................. 214
PCS (Pre-Collision System) ............ 221
2-5. Driving information Cargo and luggage ..................... 227
Vehicle load limits......................... 231
Winter driving tips ....................... 232
Trailer towing ................................. 236
Dinghy towing ............................... 237
2When driving
GS450h_HV_U.book Page 3 Monday, April 27, 2009 10:10 AM

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GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
4-1. Maintenance and careCleaning and protecting the vehicle exterior................... 420
Cleaning and protecting the vehicle interior .................... 423
4-2. Maintenance Maintenance requirements ..... 426
General maintenance ................ 428
Emission inspection and maintenance (I/M)
programs ....................................... 431
4-3. Do-it-yourself maintenance Do-it-yourself service precautions .................. 432
Hood.................................................. 435
Positioning a floor jack ............... 436
Engine compartment................. 438
Tires ................................................... 452
Tire inflation pressure................. 462
Wheels.............................................. 467
Air conditioning filter.................. 469
Electronic key battery ................ 472
Checking and replacing fuses ........................... 474
Headlight aim ............................... 489
Light bulbs ....................................... 492 5-1. Essential information
Emergency flashers ................... 500
If your vehicle needs to be towed ................................... 501
If you think something is wrong ............................................. 507
Event data recorder................... 508
5-2. Steps to take in an emergency If a warning light turns on or a warning buzzer sounds... ..... 510
If a warning message is displayed ........................................ 519
If you have a flat tire (Vehicles with standard tires) ................... 536
If you have a flat tire (Vehicles with run-flat tires) ...................... 546
If the hybrid system will not start .................................. 547
If the shift lever cannot be shifted from “P” ......................... 548
If you lose your keys .................... 549
If the electronic key does not operate properly ...................... 550
If the 12 volt battery is discharged .................................. 553
If your vehicle overheats ........... 557
If the vehicle becomes stuck............................................... 560
4Maintenance and care5When trouble arises
GS450h_HV_U.book Page 5 Monday, April 27, 2009 10:10 AM

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1-1. Hybrid system
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
■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 system again. If the
“READY” light does not come on, contact your Lexus dealer.
■Hybrid battery (traction battery)
The hybrid battery (traction battery) has a limited service life. The lifespan of the
hybrid battery (traction battery) can change in accordance with driving style and
driving conditions.
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 access hole located in the luggage compart-
ment. The service plug is used only when the vehicle is serviced and is subject to
high voltage.
■Nickel-metal hydride battery
Your vehicle contains a sealed nickel-metal hydride battery. If disposed of improp-
erly, it is hazardous to the environment and there is a risk of severe burns and elec-
trical shock that may result in death or serious injury.
GS450h_HV_U.book Page 32 Monday, April 27, 2009 10:10 AM

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1-4. Adjustable components (seats, mirrors, steering wheel)
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
CAUTION
Observe the following precautions to reduce the risk of injury in the event of sudden
braking, sudden swerving or an accident. Failing to do so may cause death or serious
injury.
■Wearing a seat belt
●Ensure that all passengers wear a seat belt.
●Always wear a seat belt properly.
●Each seat belt should be used by one person only. Do not use a seat belt for more
than one person at the same time, including children.
●Lexus recommends that children should be seated in the rear seat and always use
a seat belt and/or an appropriate child restraint system.
●Do not recline the seat any more than necessary to achieve a proper seating
position. The seat belt is most effective when the occupants are sitting up straight
and well back in the seats.
●Do not wear the shoulder belt under your arm.
●Always wear your seat belt low and snug across your hips.
■Adjustable shoulder anchor
Always make sure the shoulder belt is positioned across the center of your shoul-
der. The belt should be kept away from your neck, but not falling off your shoulder.
Failure to do so could reduce the amount of protection in an accident and cause
death or serious injuries in the event of a sudden stop, sudden swerve or accident.
(→ P. 7 5 )
■Seat belt pretensioners
●Do not place anything, such as a cushion, on the front passenger’s seat. Doing so
will disperse the passenger’s weight, which prevents the sensor from detecting
the passenger’s weight properly. As a result, the seat belt pretensioner for the
front passenger’s seat may not activate in the event of a collision.
●If the pretensioner has activated, the SRS warning light will come on. In that case,
the seat belt cannot be used again and must be replaced at your Lexus dealer.
GS450h_HV_U.book Page 78 Monday, April 27, 2009 10:10 AM

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1-8. Safety information
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
Airbag system components
Occupant detection system
(ECU and sensors)
Front passenger’s seat belt
buckle switch
Knee airbag
Front passenger airbag
Curtain shield airbag
Front side airbag
Side and curtain shield airbag
sensorCurtain shield and rear side
airbag sensor
SRS warning light
Rear side airbag (if equipped)
Driver airbag
Driver’s seat belt buckle switch
Driver’s seat position sensor
“AIR BAG ON” and “AIR BAG
OFF” indicator lights
Airbag sensor assembly
Front airbag sensor
Curtain shield airbag
Can help protect primarily the head of front occupants and rear out-
board occupants.
GS450h_HV_U.book Page 104 Monday, April 27, 2009 10:10 AM

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1-8. Safety information
Before driving
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
Front passenger occupant classification system
Your vehicle is equipped with a front passenger occupant classification sys-
tem. This system detects the conditions of the front passenger seat and
activates or deactivates the devices for front passenger.
SRS warning light
“AIR BAG OFF” indicator light
“AIR BAG ON” indicator light
Front passenger’s seat belt reminder light
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1-8. Safety information
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
Condition and operation in the front passenger occupant classification system
■Adult*1
■Child*3 or child restraint system*4
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “A I R B A G
ON”
SRS warning light Off
Front passenger’s seat belt reminder light Flashing
*2
DevicesFront passenger airbag and knee airbag
Activated
Side airbag in the front passenger seat
Curtain shield airbag
on the front passenger side
Front passenger’s seat belt pretensioner
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “A I R B A G
OFF”*5
SRS warning light Off
Front passenger’s seat belt reminder light Flashing
*2
DevicesFront passenger airbag and knee airbag
Deactivated
Side airbag in the front passenger seat
Curtain shield airbag
on the front passenger side Activated
Front passenger’s seat belt pretensioner
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1-8. Safety information
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Before driving
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
■Unoccupied
■ System malfunction
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights Not illumi-
nated
SRS warning light Off
Front passenger’s seat belt reminder light
Devices Front passenger airbag and knee airbag
Deactivated
Side airbag in the front passenger seat
Curtain shield airbag
on the front passenger side Activated
Front passenger’s seat belt pretensioner Deactivated
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “A I R B A G
OFF”
SRS warning light On
Front passenger’s seat belt reminder light Off
Devices Front passenger airbag and knee airbag
Deactivated
Side airbag in the front passenger seat
Curtain shield airbag
on the front passenger side Activated
Front passenger’s seat belt pretensioner
GS450h_HV_U.book Page 117 Monday, April 27, 2009 10:10 AM