2012 Lexus LS 600h Owners Manual - Page 619

11

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Regenerative braking

The motor generator converts kinetic energy to electric energy when:

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The accelerator pedal is released.

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The brake pedal is depressed with the shift lever in °D±, °S± or °R±.

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Sounds and vibrations specific to a hybrid vehicle

There may be no engine sounds or vibrations even though the vehicle is able to move.

Always put the shift lever in °P± when parked.

The following sounds or vibrations may occur when the hybrid system is operating, and are

not a malfunction:

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Motor sounds may be heard from under the vehicle.

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Sounds may be heard from the hybrid battery (traction battery) behind the rear seat

when the hybrid system starts or stops.

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Sounds may be heard from the transmission when the hybrid system starts or stops.

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Engine sounds may be heard when accelerating sharply.

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Sounds may be heard due to energy regeneration when you depress the brake pedal.

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Vibrations may be felt when the gasoline engine starts or stops.

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You may hear cooling fan sounds coming from the air intake vents behind the rear seat.