Lexus HS250h Hybrid 2010 Emergency Response Manual page 2

Foreword
In July 2009, Lexus released the 2010 Lexus HS250h gasoline-electric
hybrid vehicle in North America. To educate and assist emergency
responders in the safe handling of the HS250h hybrid technology,
Lexus published this HS250h Emergency Response Guide.
High voltage electricity powers the electric motor, generator, air
conditioning compressor and inverter/converter. All other automotive
electrical devices such as the headlights, radio, and gauges are powered
from a separate 12 Volt auxiliary battery. Numerous safeguards have
been designed into the HS250h to help ensure the high voltage,
approximately 244.8 Volt, Nickel Metal Hydride (NiMH) Hybrid
Vehicle (HV) battery pack is kept safe and secure in an accident.
The HS250h utilizes the following electrical systems:
Maximum 650 Volts AC
•
Nominal 244.8 Volts DC
•
Nominal 12 Volts DC
•
HS250h Features:
A boost converter in the inverter/converter that boosts the available
•
voltage to the electric motor to 650 Volts.
A high voltage Hybrid Vehicle (HV) battery pack rated at 244.8
•
Volts.
A high voltage motor driven Air Conditioning (A/C) compressor
•
rated at 244.8 Volts.
A body electrical system rated at 12 Volts, negative chassis ground.
•
Supplemental Restraint System (SRS) - dual stage frontal airbags,
•
front knee airbags, front seat and rear seat side airbags, side curtain
airbags and front and rear seat belt pretensioners.
High voltage electrical safety remains an important factor in the
emergency handling of the HS250h Lexus Hybrid Drive. It is
important to recognize and understand the disabling procedures and
warnings throughout the guide.
Additional topics in the guide include:
HS250h identification.
•
Major Lexus Hybrid Drive component locations and descriptions.
•
Extrication, fire, recovery, and additional emergency response
•
information.
Roadside assistance information.
•
This guide is intended to assist emergency responders in the safe
handling of an HS250h vehicle during an incident.
NOTE:
Emergency Response Guides for Lexus hybrid vehicles may be viewed at
http://techinfo.lexus.com.
-i-
2010 Model Year HS250h