Toyota Sienna 2021, Manual

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1-4. Hybrid system
is not being charged.
*
: When the hybrid battery (traction
battery) requires charging or the
engine is warming up, etc., the
gasoline engine will not automati-
cally stop. (

P.80)
■
During normal driving
The gasoline engine is predomi-
nantly used. The electric motor
(traction motor) charges the
hybrid battery (traction battery)
as necessary.
■
When accelerating sharply
When the accelerator pedal is
depressed heavily, the power of
the hybrid battery (traction bat-
tery) is added to that of the gas-
oline engine via the electric
motor (traction motor).
■
When braking (regenera-
tive braking)
The wheels operate the electric
motor (traction motor) as a
power generator, and the hybrid
battery (traction battery) is
charged.
■ 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
while driving with the shift lever in
D or S.
● The brake pedal is depressed
while driving with the shift lever in
D or S.
■ EV indicator
The EV indicator comes on when
the vehicle is driven using only the
electric motor (traction motor) or the
gasoline engine is stopped.
The on/off operation of the EV indi-
cator can be changed. (

P.112)
■ Conditions in which the gaso-
line 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 bat-
tery) charging
● When the temperature of the
hybrid battery (traction battery) is
high or low
● When the heater is switched on
*
: Depending on the circumstances,
the gasoline engine may also not
stop automatically in other situa-
tions.
■ Charging the hybrid battery
(traction battery)
As the gasoline engine charges the
hybrid battery (traction battery), the
battery does not need to be charged
from an outside source. However, if
the vehicle is left parked for a long
time the hybrid battery (traction bat-
tery) will slowly discharge. For this
reason, be sure to drive the vehicle
at least once every few months for
at least 30 minutes or 10 miles (16
km). If the hybrid battery (traction
battery) becomes fully discharged
and you are unable to start the