Lexus Hybrid Drive Operation - Lexus HS250h Hybrid 2010 Emergency Response Manual

Lexus Hybrid 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
HS250h
With the , 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 in
•
order to improve fuel economy and reduce emissions. Three features on the
2010 HS250h are EV (Electric Vehicle) mode, Power mode and ECO
(Economy) mode:
1. EV Mode: When activated, and certain conditions have been met,
the vehicle operates with the electric motor powered by the HV
battery.
2. ECO Mode: When activated, this mode helps enhance fuel
economy on trips that involve frequent braking and acceleration.
3. Power Mode: When activated, power mode optimizes acceleration
feel by increasing the power output more quickly at the beginning
of accelerator pedal operation.
Instrument Cluster READY Indicator
EV Drive Mode Switch/Economy Drive Mode Switch/Power Mode Switch
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