2012 Lexus HS 250h Owners Manual - Page 646

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EV drive mode

In EV drive mode, the electric motor (traction motor), powered by the hybrid battery (trac-

tion battery), is used to drive the vehicle.

This mode allows you to drive in residential areas late at night, or in indoor parking lots etc.

without concern for noises and exhaust gas emissions.

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]).

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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.

° Vehicle speed is about 19mph (30km/h) or more.

° The hybrid battery (traction battery) is low.

In general, the remaining battery level indicated in the “Energy Monitor” display is level 3

or lower.

°

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 gasoline engine is warming up.

° The accelerator pedal is depressed firmly or the vehicle is on a hill etc.

° The windshield defogger is in use.