Lexus RX450H Manual page 37


When stopped/during start-off
The gasoline engine stops when the vehicle is stopped. During
start-off, the electric motor (traction motor) drives the vehicle.
At slow speeds or when traveling down a gentle slope, the
engine is stopped and the motor is used.

During normal driving
The gasoline engine is predominantly used. The electric
motor (traction motor) charges the hybrid battery as neces-
sary.

When accelerating sharply
The power of the hybrid battery (traction battery) is added to
that of the gasoline engine via the electric motor (traction
motor).

When braking (regenerative braking)

Regenerative braking
In the following situations, kinetic energy is converted to electric energy
and deceleration force can be obtained in conjunction with the recharging of
the hybrid battery (traction battery).

The accelerator pedal is released.

The brake pedal is depressed with the shift lever in D or S.

Conditions in which the gasoline engine may not stop
The gasoline engine starts and stops automatically. However, it may not stop
automatically in the following conditions:

During gasoline engine warm-up

During hybrid battery (traction battery) charging

When the temperature of the hybrid battery (traction battery) is high or
low

When the heater is switched on
RX450h_EE
1-1. Hybrid system
1
35