2010 Lexus GS450h warning light

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GS_HV_U (OM30C81U)
February 1, 2010 10:54 am
2-1. Driving procedures
Driving the vehicle ........................ 140
Power (ignition) switch ............... 150
Transmission ................................... 154
Turn signal lever ............................ 158
Parking brake ................................. 159
Horn.................................................... 160
2-2. Instrument cluster
Gauges and meters ....................... 161
Indicators and warning 
lights................................................. 165
Multi-information display........... 168
2-3. Operating the lights and 
windshield wipers
Headlight switch .............................. 171
Fog light switch .............................. 174
Windshield wipers and 
washer............................................. 175
Headlight cleaner switch ........... 1802-4. Using other driving systems
Cruise control ................................. 181
Dynamic radar cruise 
control............................................. 185
Intuitive parking assist ................. 197
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 ..................... 228
Vehicle load limits........................ 232
Winter driving tips ....................... 233
Trailer towing ................................. 238
Dinghy towing ............................... 239
3-1. Using the touch screen
Touch screen ................................. 242
Setting the touch screen ........... 248
2When driving
3Interior features

TABLE OF CONTENTSIndex
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GS_HV_U (OM30C81U)
February 1, 2010 10:54 am
5-2. Steps to take in an emergency
If a warning light turns 
on or a warning buzzer 
sounds... ......................................... 534
If a warning message is 
displayed ....................................... 543
If you have a flat tire (Vehicles 
with standard tires) .................. 560
If you have a flat tire (Vehicles 
with run-flat tires) ...................... 570
If the hybrid system will not 
start ................................................. 572
If the shift lever cannot be shifted 
from “P” ......................................... 573
If you lose your keys .................... 574
If the electronic key does not 
operate properly ....................... 575
If the 12 volt battery is 
discharged ................................... 578
If your vehicle overheats ............ 581
If the vehicle becomes 
stuck............................................... 584
If your vehicle has to be stopped 
in an emergency ....................... 5866-1. Specifications
Maintenance data 
(fuel, oil level, etc.).................... 588
Fuel information ........................... 598
Tire information.............................. 601
6-2. Customization
Customizable features................ 615
6-3. Initialization
Items to initialize ............................ 621
Reporting safety defects 
for U.S. owners........................... 624
Seat belt instructions 
for Canadian owners 
(in French) .................................... 625
Abbreviation list........................ 628
Alphabetical index ................... 630
What to do if... ............................ 640
6Vehicle specifications
7For owners
Index

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1-1. Hybrid system
GS_HV_U (OM30C81U)
February 12, 2010 8:52 am
Hybrid warning message
A message is automatically displayed when a malfunction occurs in the
hybrid system or an improper operation is attempted.
If a warning message is shown on
the multi-information display and
the touch screen, read the mes-
sage and follow the instructions.
(P. 543)
■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.
■Running out of fuel
When the vehicle has run out of fuel and the hybrid system cannot be started, refuel
the vehicle with at least enough gasoline to make the low fuel level warning light
(P. 536) go off. If there is only a small amount of fuel, the hybrid system may not
be able to start. (The minimum amount of fuel to add to make the low fuel level
warning light go out is about 2.9 gal. [11 L, 2.4 Imp.gal.] when the vehicle is on a level
surface. This value may vary when the vehicle is on a slope.)
■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.

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1-4. Adjustable components (seats, mirrors, steering wheel)
GS_HV_U (OM30C81U)
February 1, 2010 11:00 am
CAUTION
■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. 76 )
■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.
■Child restraint lock function belt precaution
Do not allow children to play with the child restraint lock function belt. If the belt
becomes twisted around a child’s neck, it will not be possible to pull the belt out
leading to choking or other serious injuries that could result in death.
If this occurs and the buckle cannot be unfastened, scissors should be used to cut
the belt.
■Seat belt damage and wear
●Do not damage the seat belts by allowing the belt, plate or buckle to be jammed
in the door.
●Inspect the seat belt system periodically. Check for cuts, fraying, and loose parts.
Do not use a damaged seat belt until it is replaced. Damaged seat belts cannot
protect an occupant from injury.
●Ensure that the belt and tab are locked and the belt is not twisted. If the seat belt
does not function correctly, immediately contact your Lexus dealer.
●Replace the seat assembly, including the belts, if your vehicle has been involved in
a serious accident, even if there is no obvious damage.
●Do not attempt to install, remove, modify, disassemble or dispose of a seat belt.
Have any necessary repairs carried out by your Lexus dealer. Inappropriate han-
dling of the pretensioner may cause it to activate or operate improperly and may
cause death or serious injury.

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1-8. Safety information
GS_HV_U (OM30C81U)
January 28, 2010 10:42 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
“A I R B A G O N ” a n d “A I R B A G
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.

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1-8. Safety information
Before driving
GS_HV_U (OM30C81U)
January 28, 2010 10:42 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 (OM30C81U)
January 28, 2010 10:42 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 (OM30C81U)
January 28, 2010 10:42 am
■Unoccupied
■System malfunction
Indicator/
warning light“AIR BAG ON” and “AIR BAG OFF”
indicator lightsNot illumi-
nated
SRS warning light
Off
Front passenger’s seat belt reminder light
DevicesFront passenger airbag and knee airbag
Deactivated
Side airbag in the front passenger seat
Curtain shield airbag
on the front passenger sideActivated
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
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