Page 1
Hybrid
2007 Model
© 2006 Toyota Motor Corporation
All rights reserved. This document may not be
altered without the written permission of Toyota Motor Corporation.
07GS450hERG REV – (4/21/06)
Page 2
Foreword
In April 2006, Lexus released the Lexus GS450h gasoline-electric
hybrid vehicle in North America. Except where noted in this guide,
basic vehicle systems and features for the GS450h are the same as
those on the conventional, non-hybrid, Lexus GS430/300. To educate
and assist emergency responders in the safe handling of the GS450h
hybrid technology, Lexus published this GS450h Emergency Response
Guide.
High voltage electricity powers the electric motor, generator, A/C
compressor, and inverter/converter. All other automotive electrical
devices such as the horn, radio, and gauges are powered from a
separate 12-Volt battery. Numerous safeguards have been designed
into the GS450h to help ensure the high voltage, approximately 288Volts, Nickel Metal Hydride (NiMH) Hybrid Vehicle (HV) battery
pack is kept safe and secure in an accident.
The GS450h utilizes the following electrical systems:
• Maximum 650-Volts AC
• Nominal 288-Volts DC
• Maximum 37-Volts AC / DC
• Nominal 12-Volts DC
GS450h Features:
• First Hybrid Synergy Drive to utilize rear wheel drive exclusively.
• A boost converter in the inverter assembly that boosts to 650-Volts
the available voltage to the electric motor.
• The high voltage hybrid vehicle battery pack is rated at 288-Volts.
• A high voltage motor driven air conditioning compressor rated at
288-Volts.
• High voltage High Intensity Discharge (HID) headlights.
• A high voltage Electric Power Steering (EPS) assist motor rated at
37-Volts.
• The body electrical system rated at 12-Volts negative chassis
ground.
• An optional active stabilizer suspension system with a separate 12-
Volt battery.
• Supplemental Restraint System (SRS) - dual stage frontal airbags,
front knee airbags, front seat and optional rear seat side airbags,
side curtain airbags, and front seat belt pretensioners.
High voltage electrical safety is an important factor in the emergency
handling of the GS450h Hybrid Synergy Drive system. It is important
to recognize and understand the disabling procedures and warnings
throughout the guide.
Additional topics in the guide include:
• Lexus GS450h identification.
• Major Hybrid Synergy Drive component locations and descriptions.
• Extrication, fire, recovery, and additional emergency response
information.
• Roadside assistance information.
2007 Model Year GS450h
This guide is intended to assist emergency responders in the safe
handling of a Lexus GS450h hybrid vehicle during an incident.
NOTE:
Emergency Response Guides for Lexus alternative fuel vehicles may be
viewed at http://techinfo.lexus.com.
-i-
Page 3
Table of Contents Page
About the GS450h 1
GS450h Identification 2
Hybrid Synergy Drive Component Locations & Descriptions 5
Smart Access System & Push Button Start 8
Hybrid Synergy Drive Operation 10
Hybrid Vehicle (HV) Battery Pack 11
Low Voltage Batteries 12
High Voltage Safety 13
SRS Airbags & Seat Belt Pretensioners 15
Emergency Response 17
Extrication 17
Fire 21
Overhaul 21
Recovery/Recycling of the NiMH HV Battery Pack 22
Spills 22
First Aid 23
Submersion 23
Roadside Assistance 24
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Page 4
About the GS450h
The GS450h sedan joins the RX400h as a hybrid model for Lexus.
Hybrid Synergy Drive means that the vehicle contains a gasoline engine
and an electric motor for power. The two hybrid power sources are
stored on board the vehicle:
1. Gasoline stored in the fuel tank for the gasoline engine.
2. Electricity stored in a high voltage Hybrid Vehicle (HV) battery pack
for the electric motor.
The result of combining these two power sources is improved fuel
economy and reduced emissions. The gasoline engine also powers an
electric generator to recharge the battery pack; unlike a pure all electric
vehicle, the GS450h never needs to be recharged from an external
electric power source.
Depending on the driving conditions one or both sources are used to
power the vehicle. The following illustration demonstrates how the
GS450h operates in various driving modes.
n During light acceleration at low speeds, the vehicle is powered by
the electric motor. The gasoline engine is shut off.
o During normal driving, the vehicle is powered mainly by the
gasoline engine. The gasoline engine also powers the generator to
recharge the battery pack.
p During full acceleration, such as climbing a hill, both the gasoline
engine and the electric motor power the vehicle.
q During deceleration, such as when braking, the vehicle regenerates
the kinetic energy from the rear wheels to produce electricity that
recharges the battery pack.
r While the vehicle is stopped, the gasoline engine and electric motor
are off, however the vehicle remains on and operational.
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Page 5
GS450h Identification
In appearance, the 2007 GS450h is nearly identical to the conventional,
non-hybrid Lexus GS430/300. The GS450h is a 4-door sedan.
Exterior, interior, and engine compartment illustrations are provided to
assist in identification.
The alphanumeric 17 character Vehicle Identification Number (VIN) is
provided in the front windshield cowl, driver door pillar, and engine
compartment.
Example VIN: JTHBC96S840020208
A GS450h is identified by the first 6 alphanumeric characters
JTHBC9.
Driver Side Windshield Engine Compartment Cowl
Base of Driver Side B Pillar
Exterior
❶ logos on the rear trunk.
❷ logos on the rear door molding.
❸ Gasoline fuel filler door located on the driver side rear quarter panel
❷
Exterior Driver Side View
❶
Exterior Front View Exterior Rear View
❶
Exterior Rear and Passenger Side View
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❸
❶
❶
Page 6
GS450h Identification (Continued)
Interior
q The instrument cluster (speedometer, fuel gauge, warning lights) located
in the dash behind the steering wheel, is different than the one on the
conventional, non-hybrid GS430/300.
r In place of a tachometer, a power meter showing kW output is used.
NOTE:
If the vehicle is shut off, the instrument cluster gauges will be “blacked
out,” not illuminated.
Interior View
r
q
Instrument Cluster View
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Page 7
GS450h Identification (Continued)
Engine Compartment
s 3.5- liter aluminum alloy gasoline engine.
t Logos on the plastic engine cover.
Logos on Cover
t
-4-
s
Engine Compartment View
Page 8
Hybrid Synergy Drive Component Locations & Descriptions
Component Location Description
12-Volt n
Auxiliary
Battery
Hybrid o
Vehicle (HV)
Battery Pack
Power p
Cables
Inverter/
Converterq
Gasoline r
Engine
Electric s
Generator
Electric t
Motor
A/C u
Compressor
Trunk A lead-acid battery that supplies power to
the low voltage devices.
Trunk Area,
Mounted to Cross
Member and
behind Rear Seat
Under Carriage
and Engine
Compartment
Engine
Compartment
Engine
Compartment
Transmission 3-phase high voltage AC generator that is
Transmission 3-phase high voltage AC permanent magnet
Engine
Compartment
288-Volt Nickel Metal Hydride (NiMH)
battery pack consisting of 40 low voltage
(7.2-Volt) modules connected in series.
Orange colored power supply cables carry
high voltage Direct Current (DC) between
the HV battery pack, inverter/converter, and
A/C compressor. These cables also carry 3phase Alternating Current (AC) between the
inverter/converter, electrical motor, and
generator.
Boosts and inverts the high voltage
electricity from the HV battery pack to 3phase AC electricity that drives the electric
motor. The inverter/converter also converts
AC electricity from the electric generator
and electric motor (regenerative braking) to
DC that recharges the HV battery pack.
Provides two functions: 1) powers vehicle:
2) powers generator to recharge the HV
battery pack. The engine is started and
stopped under control of the vehicle
computer.
contained in the transmission and recharges
the HV battery pack.
electric motor contained in the transmission
and drives the rear wheels through the
propeller shaft.
3-phase high voltage AC electrically driven
motor compressor.
-5-
n
r
q
p
o
v
s t
u
Hybrid Synergy Drive Components
q
r
s t
p
u
Components (Top View) and High Voltage Power Cables
v
o
n
Page 9
Hybrid Synergy Drive Component Locations & Descriptions
(Continued)
Component Location Description
DC-DC
Converter v
Fuel Tank w
and Fuel
Lines
Trunk under HV
Battery Pack
Undercarriage,
Driver Side and
Center
Converts 288-Volts from the HV battery
pack to 12-Volts for low voltage vehicle
power.
The fuel tank provides gasoline via fuel
lines to the engine. The fuel lines are
routed along the driver side and center
tunnel under the floor pan.
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w
Fuel Tank and Fuel Lines
Page 10
Hybrid Synergy Drive Component Locations & Descriptions
(Continued)
Key Specifications:
Gasoline Engine: 292 hp (218 kW), 3.5- liter Aluminum Alloy Engine
Electric Motor: 197 hp (147 kw), Permanent Magnet Motor
Transmission: Automatic Only
HV Battery: 288-Volt Sealed NiMH
Curb Weight: 4,134lbs / 1,875 kg
Fuel Tank: 17.2 gals / 65 liters
Fuel Economy: 25.0 / 28.0 (City/Hwy) miles/gal
9.4 / 8.4 (City/Hwy) liters/100 km
Frame Material: Steel Unibody
Body Material: Steel Panels
Battery
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Steel Unibody
Page 11
Smart Access System & Push Button Start
The GS450h smart access system consists of a smart key transceiver
that communicates bi-directionally enabling the vehicle to recognize
the smart key in close proximity to the vehicle. Once recognized, the
smart key will allow the user to lock and unlock the doors without
pushing smart key buttons, and start the vehicle without inserting it
into an ignition switch.
Smart key features:
• Passive (remote) function to lock/unlock the doors and start the
vehicle.
• Wireless transmitter to lock/unlock the doors.
• Hidden metal cut key to lock/unlock the doors from the exterior
door lock.
Door (Lock/Unlock)
Three methods are available to lock/unlock the doors.
1. Pushing wireless smart key lock/unlock buttons.
2. Touching the sensor on the backside of any exterior door handle, with
the smart key in close proximity to the vehicle, unlocks the doors.
Pushing the lock button on any exterior door handle locks the doors.
3. Inserting the hidden metal cut key in the driver door lock and turning
clockwise once unlocks the driver door, twice unlocks all doors. To
lock all doors turn the key counter-clockwise once. Only the driver door
contains an exterior door lock for the metal cut key.
Smart Key Hidden Metal Cut Key For Door Lock
Unlock Touch
Sensor
Driver Door Unlock Touch Sensor and
Lock Button
Lock
Button
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Smart Access System & Push Button Start (Continued)
Vehicle Starting/Stopping
The smart key has replaced the conventional metal cut key, and the power
button with an integral status indicator light has replaced the ignition switch.
The smart key only needs to be in proximity to the vehicle.
• With the brake pedal released, the first push of the power button
operates the accessory mode, the second push operates the ignition-on
mode, and the third push turns the ignition off again.
Ignition Mode Sequence (Brake pedal released):
Vehicle Off
Button Push
Accessory
Button Push
Ignition-On
Ignition Mode Power Button Indicator Light
Off Off
Accessory Amber
Ignition-On Amber
Brake Pedal Depressed Green
Vehicle Started (READY-ON) Off
Malfunction Blinking Amber
Button Push
• Starting the vehicle takes priority over all other ignition modes and is
accomplished by depressing the brake pedal and pushing the power
button once. To verify the vehicle has started, the power button status
indicator light is off and the READY light is illuminated in the
instrument cluster.
• If the internal smart key battery is dead, it cannot communicate with the
vehicle. In order for the vehicle to recognize the smart key, the driver
must hold the smart key next to the power button while pushing.
• Once the vehicle has started and is on and operational (READY-ON),
the vehicle is shut off by bringing the vehicle to a complete stop, placing
the gearshift lever in Park, and then depressing the power button once.
Power Button with Integral Status
Indicator Light
Starting Sequence
(Brake Pedal Depressed)
Ignition Modes (Brake Pedal Released)
Required Distance:
Smart Key Recognition
(When Smart Key Battery is Dead)
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Page 13
Hybrid Synergy Drive Operation
Once the READY indicator is illuminated in the instrument cluster,
the vehicle may be driven. However, the gasoline engine does not
idle like a typical automobile and will start and stop automatically. It
is important to recognize and understand the READY indicator
provided in the instrument cluster. When lit, it informs the driver that
the vehicle is on and operational even though the gasoline engine may
be off and the engine compartment is silent.
Vehicle Operation
• With the GS450h, the gasoline engine may stop and start at any time
while the READY indicator is on.
• Never assume that the vehicle is shut off just because the engine is off.
Always look for the READY indicator status. The vehicle is shut off
when the READY indicator is off.
• The vehicle may be powered by:
1. The electric motor only.
2. The gasoline engine only.
3. A combination of both the electric motor and the gasoline
engine.
• The vehicle computer determines the mode in which the vehicle operates
to improve fuel economy and reduce emissions. The driver cannot
manually select the mode.
Instrument cluster READY Indicator
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Page 14
Hybrid Vehicle (HV) Battery Pack
The GS450h contains a high voltage, Hybrid Vehicle (HV) battery pack
that contains sealed Nickel Metal Hydride (NiMH) battery modules.
HV Battery Pack
• The HV battery pack is enclosed in a metal case and is securely mounted
in the trunk area behind the rear seat. The metal case is isolated from
high voltage and concealed by fabric covers.
• The HV battery pack consists of 40 low voltage (7.2-Volt) NiMH battery
modules connected in series to produce approximately 288-Volts. Each
NiMH battery module is non-spillable and sealed in a plastic case.
• The electrolyte used in the NiMH battery module is an alkaline mixture of
potassium and sodium hydroxide. The electrolyte is absorbed into the
battery cell plates and forms a gel that will not normally leak, even in a
collision.
• In the unlikely event that the battery pack is overcharged, the modules
vent gases directly outside the vehicle through a vent hose.
HV Battery Pack
Battery pack voltage 288 V
Number of NiMH battery modules in the pack 40
NiMH battery module voltage 7.2 V
NiMH battery module dimensions 5 x 1 x 11 in
(118 x 20 x 276 mm)
NiMH module weight 2.3 lbs (1.0kg)
NiMH battery Pack dimensions 13 x 37 x 19 in
(333 x 952 x 484 mm)
NiMH battery Pack weight 152.1 lbs
(69 kg)
Components Powered by the HV Battery Pack
• Electric Motor • Power Cables
• Inverter/Converter • DC-DC Converter
• A/C Compressor • Electric Generator
HV Battery Pack Recycling
• The HV battery pack is recyclable. Contact the nearest Lexus dealer, or:
United States: (800) 255-3987, Canada: (800) 265-3987
HV Battery Pack
HV Battery Pack
(Viewed from the Trunk)
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Page 15
Low Voltage Batteries
Auxiliary Battery
• The GS450h contains a lead-acid 12-Volt battery. The 12-Volt auxiliary
battery powers the vehicle’s electrical system similar to a conventional
vehicle. As with conventional vehicles, the auxiliary battery is grounded
to the metal chassis of the vehicle.
• The auxiliary battery is located in trunk. It is concealed by a fabric cover
on the driver side in the rear quarter panel well.
Optional Active Stabilizer Suspension System Battery
• The GS450h may be optionally equipped with an active stabilizer
suspension system powered by a separate 12-Volt lead-acid battery.
Similar to the auxiliary battery, the 12-Volt active stabilizer suspension
system battery is grounded to the metal chassis of the vehicle.
• When equipped with the optional active stabilizer suspension system, the
GS450h is equipped with run-flat tires, and no spare tire. The active
stabilizer suspension system battery is located in the trunk, and concealed
under deck fabric and tool tray in the spare tire well.
NOTE:
The 12-Volt battery for the optional active stabilizer suspension system
does not power the vehicle’s low voltage system. Responders need to
identify and distinguish the auxiliary battery from the active stabilizer
suspension system battery. When in doubt, during power disconnect,
disable both 12-Volt batteries in the trunk.
12-Volt Auxiliary Battery Mounted in
Trunk
Optional Active
Stabilizer
Suspension System
Auxiliary
Battery
Battery
Front
Optional 12-Volt Battery for Active
Stabilizer Suspension System
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Low Voltage Batteries in Trunk
Page 16
High Voltage Safety
The HV battery pack powers the high voltage electrical system with DC
electricity. Positive and negative orange colored high voltage power cables
are routed from the battery pack, under the vehicle floor pan, routed along the
passenger side propeller shaft and transmission tunnel to the
inverter/converter. The inverter/converter contains a circuit that boosts the
HV battery voltage from 288 to 650-Volts DC. The inverter creates 3-phase
AC to power the motor and generator located in the transmission. Power
cables are routed from the inverter to each high voltage motor (electrical
motor, electric generator, and A/C compressor). The following systems are
intended to help keep occupants in the vehicle and emergency responders safe
from high voltage electricity:
High Voltage Safety System
• A high voltage fuse n provides short circuit protection in the HV battery
pack.
• Positive and negative high voltage power cables o connected to the HV
battery pack are controlled by 12-Volt normally open relays p. When the
vehicle is shut off, the relays stop electrical flow from leaving the HV
battery pack.
WARNING:
The high voltage system may remain powered for up to 10 minutes
after the vehicle is shut off or disabled. To prevent serious injury or
death from severe burns or electric shock, avoid touching, cutting, or
opening any orange high voltage power cable or high voltage
component.
• Both positive and negative power cables o are insulated from the metal
chassis, so there is no possibility of electric shock when touching the
metal chassis.
• A ground fault monitor q continuously monitors for high voltage leakage
to the metal chassis while the vehicle is running. If a malfunction is
detected, the hybrid vehicle computer q will illuminate the master
warning light
HYBRID SYSTEM” on the multi-information display.
• The HV battery pack relays will automatically open to stop electricity
flow in a collision sufficient to activate the SRS.
in the instrument cluster and indicate “CHECK
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HV Battery Pack
0.0
A/C
Compressor
0 Volts AC
3 - Phase
Volts DC
+
+
Inverter/
-
Converter
o
o
High Voltage Safety System – Vehicle Shut Off (READY-OFF)
288
Volts DC
A/C
Compressor
650 Volts
AC Max
3 - Phase
+
+
Inverter/
-
Converter
High Voltage Safety System – Vehicle On and Operational (READY-ON)
0.0
Volts DC
-
+
+
o
Electric Motor
Generator
q
Hybrid
Vehicle Computer
288
Volts DC
-
+
+
Electric Motor
Generator
Hybrid
Vehicle Computer
p
_
p
12-Volt
Auxiliary Battery
HV Battery Pack
_
12-Volt
Auxiliary Battery
n
Page 17
High Voltage Safety (Continued)
Electronic Power Steering System
The GS450h is equipped with a 37-Volt AC assist motor for the Electric
Power Steering (EPS) system. The EPS computer generates 37-Volts from
the 12-Volt system. The 37-Volt wires are isolated from the metal chassis
and are routed a short distance from the EPS computer to the EPS assist motor
in the engine compartment.
NOTE:
37-Volt AC has a higher arc potential than the normal 12-Volt DC.
High Intensity Discharge Headlights
Similar to conventional, non-hybrid, Lexus vehicles, the GS450h is equipped
with low beam projector type High Intensity Discharge (HID) headlights.
The light control unit, located inside the headlight assembly, contains a high
voltage generator circuit that momentarily boosts 12-Volts to 22-kV that is
applied to the bulb when the headlights are turned on. Once illuminated, the
voltage drops to approximately 45-Volts.
EPS
Computer
EPS
Assist Motor
37-Volt EPS
WARNING:
High voltage is applied to the HID bulb socket when the low beam
headlights are turned on. To avoid serious injury or death by electric
shock do not touch the bulb socket when the headlights are turned on.
HID Low Beam
Headlight
Projector Type HID Low Beam Headlights
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Page 18
SRS Airbags & Seat Belt Pretensioners
Standard Equipment
• Electronic frontal impact sensors (2) are mounted in the engine
compartment n as illustrated on the following page.
• Front seat belt pretensioners are mounted near the base of the B-pillar o.
• A frontal dual stage airbag for the driver p is mounted in the steering
wheel hub.
• A frontal dual stage airbag for the front passenger q is integrated into the
dashboard and deploys through the top of the dashboard.
• The SRS computer r is mounted on the floor pan underneath the center
console. It also contains an impact sensor.
• Front electronic side impact sensors (2) are mounted near the base of the
B-pillars s.
• Rear electronic side impact sensors (2) are mounted near the base of the
C-pillars t.
• Front seat side impact airbags u are mounted in the seatbacks.
• Side curtain airbags v are mounted along the outer edge inside the roof
rails.
• Front knee airbags w are mounted on the driver side and passenger side
lower portion of the dash.
Optional Equipment
• Rear seat side impact airbags mounted in the rear seats are optional
equipment.
• A pre-crash safety system containing a radar sensory system, occupant
seat sensor, and an electric motor-pyrotechnic pretensioner system.
During a pre-collision event, an electric motor in the pretensioners
retracts the slack in the front seatbelts. When conditions stabilize the
electric motor will reverse itself. When the airbags deploy, the
pyrotechnic pretensioners function normally.
NOTES:
The front seatback mounted side impact airbags and the side curtain
airbags may deploy independently of each other.
The knee airbags deploy simultaneously with the frontal airbags and seat
belt pretensioners.
11
The GS 450h is equipped with a standard front passenger occupant
classification system that may prohibit the deployment of the front
passenger frontal airbag, knee airbag, seatback mounted side impact
airbag, and seat belt pretensioner. If the passenger occupant classification
system prohibits deployment during an SRS event, the passenger SRS
will not re-arm nor deploy.
WARNING:
The SRS may remain powered for up to 90 seconds after the vehicle is
shut off or disabled. To prevent serious injury or death from
unintentional SRS deployment, avoid breaching the SRS components.
Frontal, Knee, Front Seatback Mounted Side, Side Curtain, and Optional
Rear Seat Side Airbags
Driver Side Knee Airbags
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Page 19
SRS Airbags & Seat Belt Pretensioners (Continued)
s
u
n
Electronic Impact Sensors, Front and Optional Rear Seat
Side Airbags
u
11
t
s
v
q
w
o
p
r
w
o
Standard Frontal Airbags, Seat Belt Pretensioners, Knee
Airbags, and Side Curtain Airbags.
v
Side Curtain Airbag Inflator in Roof Rail
SRS System Diagram
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Page 20
Emergency Response
On arrival, emergency responders should follow their standard
operating procedures for vehicle incidents. Emergencies involving the
GS450h may be handled like other automobiles except as noted in these
guidelines for Extrication, Fire, Overhaul, Recovery, Spills, First Aid,
and Submersion.
WARNING:
• Never assume the GS450h is shut off simply because it is silent.
• Always observe the instrument cluster for the READY indicator
status to verify whether the vehicle is on or shut off. The vehicle is
shut off when the READY indicator is off.
• Failure to shut off the vehicle before emergency response
procedures are performed may result in serious injury or death
from the unintentional deployment of the SRS or severe burns and
electric shock from the high voltage electrical system.
Extrication
• Immobilize Vehicle
Chock wheels and set the parking brake.
Move the shift lever to the Park position.
• Disable Vehicle
Performing any one of the following three procedures will shut the
vehicle off and disable the HV battery pack, SRS, and gasoline fuel
pump.
Procedure #1
1. Confirm the status of READY indicator in the instrument cluster.
2. If the READY indicator is illuminated, the vehicle is on and
operational. Shut off the vehicle by pushing the power button
once.
3. The vehicle is already shut off if the instrument cluster lights and
the READY indicator are not illuminated. Do not push the
power button because the vehicle may start.
4. Keep the smart key at least 16 feet (5 meters) away from the
vehicle.
5. If the smart key cannot be found, disconnect the 12-Volt auxiliary
battery in the trunk.
Chock Wheels Set Parking Brake
Shift Lever in Park Shut Off Vehicle (READY-Off)
Trunk Opener Button 12-Volt Auxiliary Battery in Trunk
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Page 21
Emergency Response (Continued)
Extrication (Continued)
NOTE:
Before disconnecting the 12-Volt auxiliary battery, if necessary,
reposition the power seats and tilt/telescoping steering wheel, lower
the windows, unlock the doors, open the trunk and the fuel door as
required. A manual fuel door release is located in the trunk (see
illustration in the Roadside Assistance section page 25). Once the 12Volt auxiliary battery is disconnected power controls will not operate.
Procedure #2 (Alternate if power button is inaccessible)
1. Disconnect the 12-Volt auxiliary battery in the trunk.
2. Remove the engine compartment covers.
3. Remove the driver side fuse box cover.
4. Remove the IGCT No. 1 fuse (20A yellow colored) in the engine
compartment junction block as illustrated. If the correct fuse
cannot be recognized, pull all of the fuses in the fuse block.
Procedure #3 (Alternate if power button and engine
compartment are inaccessible)
1. Remove the RH J/B-B fuse (30A green colored) in the trunk near
the auxiliary battery positive post as illustrated. If the correct
fuse cannot be recognized, pull all three fuses.
2. Disconnect the 12-Volt auxiliary battery in the trunk.
WARNING:
• The high voltage system may remain powered for up to 10 minutes
after the vehicle is shut off or disabled. To prevent serious injury
or death from severe burns or electric shock, avoid touching,
cutting, or opening any orange high voltage power cable or high
voltage component.
• The SRS may remain powered for up to 90 seconds after the vehicle
is shut off or disabled. To prevent serious injury or death from
unintentional SRS deployment, avoid breaching the SRS
components.
•
If none of the disabling procedures can be performed, proceed with
caution as there is no assurance that the high voltage electrical
system, SRS, or fuel pump are disabled
.
Remote Hood Release Hood Latch Release
Remove Engine Compartment Covers Remove Fuse Box Cover
IGCT No.1
Fuse
(20A Yellow)
IGCT No. 1 Fuse Location in Engine
Compartment Fuse Box
RH J/B-B Fuse 12-Volt Auxiliary
(30 A Green) Battery + Post
RH J/B-B Fuse in Trunk near the
Auxiliary Battery Positive Post
-18-
Page 22
Emergency Response (Continued)
Extrication (Continued)
• Stabilize Vehicle
Crib at (4) points directly under the front and rear pillars.
Do not place cribbing under the high voltage power cables, exhaust
system, or fuel system.
NOTES:
The GS450h is equipped with a tire pressure warning system that by
design prevents pulling the metal valve stem with integral transmitter.
Snapping the stem with pliers or removing the valve cap and Schrader
valve will release the air in the tire.
The GS450h may also be equipped with optional run flat tires, having
reinforced side walls that will support the vehicle’s weight even when
punctured, unlike conventional tires.
Unlike conventional tires, the run flat tire when deflated may only
drop 1 inch (2.54 cm) due to the stiffness of the side wall. Like
conventional tires, responders should not stab tires with a knife, doing
so could cause serious injury to the hand.
• Access Patients
Glass Removal
Use normal glass removal procedures as required.
SRS Awareness
Responders need to be cautious when working in close proximity
to undeployed airbags and seat belt pretensioners. Front dual
stage airbags automatically ignite both stages within a fraction of
a second.
Door Removal/Displacement
Doors can be removed by conventional rescue tools such as hand,
electric, and hydraulic tools. In certain situations, it may be
easier to pry back the vehicle body to expose and unbolt the
hinges.
Cribbing Points Underbody View
Tire Pressure Sensor Metal Valve Stem
with Integral Transmitter.
Run Flat Tire with Reinforced Sidewall
Cribbing Points
Metal Valve Stem with Integral
Transmitter Installed on Wheel
-19-
Page 23
Emergency Response (Continued)
Extrication (Continued)
Roof Removal
The GS450h contains side curtain airbags. If undeployed, it is
not recommended to remove or to displace the roof. The side
curtain airbags may be identified as illustrated.
Dash Displacement
The GS450h contains side curtain airbags. Do not remove or
displace the roof during a dash displacement to avoid cutting into
undeployed airbags or inflators. As an alternative, dash
displacement may be performed by using a Modified Dash Roll.
Rescue Lift Air Bags
Responders should not place cribbing or rescue lift air bags under
the high voltage power cables, exhaust system, or fuel system.
Repositioning Steering Wheel and Seat
Power tilt/telescopic steering wheel and seat controls are shown
in the illustration.
NOTE:
The GS450h driver seat is equipped with a power seat slide
linked headrest. Repositioning the seat and/or headrest removal
must be done prior to 12-Volt auxiliary battery disconnect.
Unlike the passenger seat, the driver seat has a hidden release
button located under the seat fabric as illustrated.
SRS CURTAIN
AIRBAG
SRS CURTAIN
AIRBAG
SRS KNEE
AIRBAG
Front Seat Side, Side Curtain, and Knee Airbag Identifiers.
Power Tilt and Telescoping Controls
SRS SIDE
AIRBAG
-20-
Power Front Seat Controls
Driver Headrest Hidden
Release Button
Page 24
Emergency Response (Continued)
Fire
Approach and extinguish a fire using proper vehicle fire fighting practices as
recommended by NFPA, IFSTA, or the National Fire Academy (USA).
• Extinguishing Agent
Water has been proven to be a suitable extinguishing agent.
• Initial Fire Attack
Perform a fast, aggressive fire attack.
Divert the runoff from entering watershed areas.
Attack teams may not be able to identify a GS450h until the fire has
been knocked down and overhaul operations have commenced.
• Fire in the HV Battery Pack
Should a fire occur in the NiMH HV battery pack, attack crews
should utilize a water stream or fog pattern to extinguish any fire
within the trunk except
WARNING:
• The NIMH battery electrolyte is a caustic alkaline (pH 13.5)
that is damaging to human tissues. To avoid injury by
coming in contact with the electrolyte, wear proper personal
protective equipment.
• The battery modules are contained within a metal case and
accessibility is limited.
• To avoid serious injury or death from severe burns or
electric shock, never breach or remove the high voltage
battery pack cover under any circumstance including fire.
When allowed to burn themselves out, the GS450h NiMH battery
modules burn rapidly and can quickly be reduced to ashes except for
the metal.
for the HV battery pack.
Offensive Fire Attack
Normally
water at a safe distance will effectively control the HV battery pack
fire by cooling the adjacent NiMH battery modules to a point below
their ignition temperature. The remaining modules on fire, if not
extinguished by the water, will burn themselves out.
However, flooding the GS450h HV battery pack is not
due to the battery case design and location preventing the responder
from properly applying water through the available vent openings
safely. Therefore, it is recommended that the incident commander
allow the GS450h HV battery pack to burn itself out.
Defensive Fire Attack
If the decision has been made to fight the fire using a defensive
attack, the fire attack crew should pull back a safe distance and allow
the NiMH battery modules to burn themselves out. During this
defensive operation, fire crews may utilize a water stream or fog
pattern to protect exposures or to control the path of smoke.
flooding a NiMH HV battery pack with copious amounts of
recommended
Overhaul
During overhaul, immobilize and disable the vehicle if not already done. See
illustrations on page 17. The HV battery cover should never be breached or
removed under any circumstances including fire. Doing so may result in
severe electrical burns, shock, or electrocution.
•
Immobilize Vehicle
Chock wheels and set the parking brake.
Move the shift lever to the Park position.
• Disable Vehicle
Performing any one of the following three procedures will shut the
vehicle off and disable the HV battery pack, SRS, and gasoline fuel
pump.
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Page 25
Emergency Response (Continued)
Overhaul (Continued)
Procedure #1
1. Confirm the status of READY indicator in the instrument cluster.
2. If the READY indicator is illuminated, the vehicle is on and
operational. Shut off the vehicle by pushing the power button
once.
3. The vehicle is already shut off if the instrument cluster lights and
the READY indicator are not illuminated. Do not push the
power button because the vehicle may start.
4. Keep the smart key at least 16 feet (5 meters) away from the
vehicle.
5. If the smart key cannot be found, disconnect the 12-Volt auxiliary
battery in the trunk.
Procedure #2 (Alternate if power button is inaccessible)
1. Disconnect the 12-Volt auxiliary battery in the trunk.
2. Remove the engine compartment covers.
3. Remove the driver side fuse box cover.
4. Remove the IGCT No. 1 fuse (20A yellow colored) in the engine
compartment junction block as illustrated on page 18. If the
correct fuse cannot be recognized, pull all of the fuses in the fuse
block.
Procedure #3 (Alternate if power button and engine
1. Remove the RH J/B-B fuse (30A green colored) in the trunk near
the auxiliary battery positive post as illustrated on page 18. If the
correct fuse cannot be recognized, pull all three fuses.
2. Disconnect the 12-Volt auxiliary battery in the trunk.
Recovery/Recycling of NiMH HV Battery Pack
Clean up of the HV battery pack can be accomplished by the vehicle recovery
crew without further concern of runoff or spillage. For information regarding
recycling of the HV battery pack, contact the nearest Lexus dealer, or:
United States: (800) 255-3987, Canada: (800) 265-3987
compartment are inaccessible)
WARNING:
• The high voltage system may remain powered for up to 10
minutes after the vehicle is shut off or disabled. To prevent
serious injury or death from severe burns or electric shock,
avoid touching, cutting, or opening any orange high voltage
power cable or high voltage component.
• The SRS may remain powered for up to 90 seconds after the
vehicle is shut off or disabled. To prevent serious injury or
death from unintentional SRS deployment, avoid breaching the
SRS components.
• If none of the disabling procedures can be performed, proceed
with caution as there is no assurance that the high voltage
electrical system, SRS, or fuel pump are disabled.
Spills
The GS450h contains the same common automotive fluids used in other nonhybrid Lexus vehicles, with the exception of NiMH electrolyte used in the HV
battery pack. The NiMH battery electrolyte is a caustic alkaline (pH 13.5)
that is damaging to human tissues. The electrolyte, however, is absorbed in
the cell plates and will not normally spill or leak out even if a battery module
is cracked. A catastrophic crash that would breach both the metal battery
pack case and the plastic battery module would be a rare occurrence.
Similar to the use of baking soda to neutralize a lead-acid battery electrolyte
spill, a dilute boric acid solution or vinegar can be used to neutralize a NiMH
battery electrolyte spill.
NOTE:
Electrolyte leakage from the HV battery pack is unlikely due to its
construction and the amount of available electrolyte contained within the
NiMH modules. Any spillage would not warrant a declaration as a hazardous
material incident. Responders should follow the recommendations as outlined
in this emergency response guide.
-22-
Page 26
Emergency Response (Continued)
Spills (Continued)
In an emergency, Lexus Material Safety Data Sheets (MSDS) are available by
contacting:
United States: CHEMTREC at (800) 424-9300
Canada: CANUTEC at *666 or (613) 996-6666 (collect)
• Handle NiMH electrolyte spills using the following Personal Protective
Equipment (PPE):
Splash shield or safety goggles. Fold down helmet shields are not
acceptable for acid or electrolyte spills.
Rubber, latex or nitrile gloves.
Apron suitable for alkaline.
Rubber boots.
• Neutralize NiMH Electrolyte
Use a boric acid solution or vinegar.
Boric acid solution - 800 grams boric acid to 20 liters water or 5.5
ounces boric acid to 1 gallon of water.
First Aid
Emergency responders may not be familiar with a NiMH electrolyte exposure
when rendering aid to a patient. Exposure to the electrolyte is unlikely except
in a catastrophic crash or through improper handling. Utilize the following
guidelines in the event of exposure.
WARNING:
The NIMH battery electrolyte is a caustic alkaline (pH 13.5) that is
damaging to human tissues. To avoid injury by coming in contact
with the electrolyte, wear proper personal protective equipment.
• Wear Personal Protective Equipment (PPE)
Splash shield or safety goggles. Fold down helmet shields are not
acceptable for acid or electrolyte spills.
Rubber, latex or nitrile gloves.
Apron suitable for alkaline.
Rubber boots.
• Absorption
Perform gross decontamination by removing affected clothing and
properly disposing of the garments.
Rinse the affected areas with water for 20 minutes.
Transport patients to the nearest emergency medical care facility.
• Inhalation in Non-Fire Situations
No toxic gases are emitted under normal conditions.
• Inhalation in Fire Situations
Toxic gases are given off as by-products of combustion. All
responders in the Hot Zone should wear the proper PPE for fire
fighting including SCBA.
Move a patient from the hazardous environment to a safe area and
administer oxygen.
Transport patients to the nearest emergency medical care facility.
• Ingestion
Do not induce vomiting.
Allow a patient to drink large quantities of water to dilute electrolyte
(Never give water to an unconscious person).
If vomiting occurs spontaneously, keep the patient’s head lowered
and forward to reduce the risk of asphyxiation.
Transport patients to the nearest emergency medical care facility.
Submersion
When fully or partially submersed a GS450h can be safely handled by
following these recommendations:
• Remove the vehicle from the water.
• Drain the water from the vehicle if possible.
• Follow the immobilizing and disabling procedures on page 17.
-23-
Page 27
Roadside Assistance
Lexus GS450h roadside assistance may be handled like conventional Lexus
vehicles except as noted in the following pages.
Lexus Roadside Assistance is available during the basic warranty period by
contacting:
United States: (800) 255-3987, Canada: (800) 265-3987
Shift Lever
Similar to most Lexus vehicles, the GS450h uses a gated shift lever as shown
in the illustration. However, the GS450h shift lever includes an S position for
6 levels of engine braking.
Towing
The GS450h is a rear drive vehicle and it must be towed with the rear wheels
off the ground. Failure to do so may cause serious damage to the Hybrid
Synergy Drive components.
• A flat bed trailer is the preferred method of towing.
• When towing the vehicle with the front wheels on the ground, be sure to
release the steering lock by turning the ignition-on.
• The vehicle may be shifted out of Park into Neutral by turning the
ignition-on, depressing the brake, then moving the gated shift lever to N.
• If the shift lever cannot be moved out of Park, a shift lock release button
is provided near the shift lever as shown in the illustration.
• If a tow truck is not available, in an emergency the vehicle may be
temporarily towed using a cable or chain secured to the emergency
towing eyelet. This should only be attempted on hard, paved roads for
short distances at low speeds.
Gated Shift Lever Remove Shift Lock Release Cover
Push in Shift Lock Release
-24-
Page 28
Roadside Assistance (Continued)
Electric Trunk Opener
The GS450h is equipped with an electric trunk opener. In the event of 12Volt power loss, the trunk can be opened with the metal cut key hidden in the
smart key.
Electric Fuel Door Opener
The GS450h is equipped with an electric fuel door opener. In the event of 12Volt power loss, the fuel door can only be opened using the manual release
located inside the trunk.
Spare Tire
The jack, tools, and spare tire are provided in the trunk as illustrated.
NOTE:
If the vehicle is equipped with the optional active stabilizer suspension system,
the vehicle will not be equipped with a spare tire.
Fuel Door
Opener Switch
Fuel Door and Trunk Opener Switches
Manual Fuel Door Release Tools and Spare Tire in the Trunk
Trunk Opener
Switch
Manual Trunk Opening with the Metal
Cut Key
-25-
Page 29
Roadside Assistance (Continued)
Jump Starting
The 12-Volt auxiliary battery may be jump started if the vehicle does not start
and the instrument cluster gauges are dim or off after depressing the brake
pedal and pushing the power button.
The 12-Volt auxiliary battery is located in the trunk. The trunk opener will
not operate if the auxiliary battery is discharged. Instead use the metal cut
key hidden in the smart key to open the trunk.
• Open the trunk, and remove the 12-Volt auxiliary battery cover on the
driver side.
• Connect the positive jumper cable to the positive battery post.
• Connect the negative jumper cable to the negative battery post.
• Place the smart key in proximity to the vehicle, depress the brake pedal,
and push the power button.
NOTES:
If the vehicle does not recognize the smart key after connecting the
booster battery to the vehicle, open and close the driver door when the
vehicle is shut off.
If the smart key internal battery is dead, hold the smart key next to the
power button during the start sequence.
• The high voltage HV battery pack cannot be jump started.
Immobilizer & Anti-Theft Alarm
The GS450h is equipped with an immobilizer system and an anti-theft alarm
as standard equipment.
• The vehicle can be started only with a registered smart key.
• To disarm the anti-theft alarm, unlock the door by using the smart key
button, hidden metal cut key, or using the door handle touch sensor.
Engaging the ignition-on mode or starting the vehicle will also disarm the
anti-theft alarm.
-26-
12-Volt Auxiliary
Battery
Clip
Optional 12-Volt Battery for Active
Stabilizer Suspension System
Jumper Cable Connections
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