Ev Drive Mode; Turns Ev Drive Mode On/Off; Situations In Which Ev Drive Mode Cannot Be Turned On - Lexus RX 450H Owner's Manual

EV drive mode

In EV drive mode, electric power is supplied by the hybrid battery (traction
battery), and only the electric motor (traction motor) is used to drive the vehi-
cle.
This mode allows you to drive in residential areas early in the morning and late
at night, or in indoor parking lots, etc., without concern for noises and gas
emissions.
However, when the vehicle proximity notification system is active, the vehicle
may produce sound.

Turns EV drive mode on/off

When EV drive mode is turned on, the
EV drive mode indicator will come on.
Pressing the switch when in EV drive
mode will return the vehicle to normal
driving (using the gasoline engine and
electric motor [traction motor]).

Situations in which EV drive mode cannot be turned on

■
It may not be possible to turn EV drive mode on in the following situations. If it cannot be
turned on, a buzzer will sound and a message will be shown on the multi-information dis-
play.
The temperature of the hybrid system is high.
●
The vehicle has been left in the sun, driven on a hill, driven at high speeds, etc.
The temperature of the hybrid system is low.
●
The vehicle has been left in temperatures lower than about 32 °F (0 °C) for a long
period of time, etc.
The gasoline engine is warming up.
●
The hybrid battery (traction battery) is low.
●
The remaining battery level indicated in the "Energy Monitor" display is low. (→P. 124)
Vehicle speed is high.
●
The accelerator pedal is depressed firmly or the vehicle is on a hill, etc.
●
The windshield defogger is in use.
●
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4-2. Driving procedures
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