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FOREWORD
In May 2006, Lexus will release the Lexus
GS450h petrol-electric hybrid vehicle in
Australia. 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.
This GS450h Emergency Response Guide has
been published to educate and assist
emergency responders in the safe handling of
the GS450h hybrid technology.
High voltage electricity powers the electric
motor, generator, A/C compressor, and
inverter/converter. All other automotive
electrical devices such as the headlights, power
steering, 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 288-Volts, Nickel Metal Hydride
(NiMH) Hybrid Vehicle (HV) battery pack is kept
safe and secure in an accident.
The GS450h utilises 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 utilise 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 electric
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.
•
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 recognise 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.
By following the information in this guide,
emergency responders should be able to safely
perform a rescue involving the Lexus GS450h
hybrid vehicle.
2006 GS450h
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