Hybrid System Features - Toyota SIENNA 2022 Manual

hybrid system, contact your Toyota
dealer.
■ Charging the 12-volt battery
P.506
■ After the 12-volt battery has dis-
charged or when the terminal
has been removed and installed
during exchange, etc.
The gasoline engine may not stop
even if the vehicle is being driven by
the hybrid battery (traction battery).
If this continues for a few days, con-
tact your Toyota dealer.
■ Sounds and vibrations specific
to a hybrid vehicle
There may be no engine sound or
vibration even though the vehicle is
able to move with the "READY" indi-
cator is illuminated. For safety,
make sure to shift the shift lever to P
and apply the parking brake when
parked.
The following sounds or vibrations
may occur when the hybrid system
is operating and are not a malfunc-
tion:
● Motor sounds may be heard from
the engine compartment.
● Sounds may be heard from the
hybrid battery (traction battery)
under the front seats when the
hybrid system starts or stops.
● Relay operating sounds such as a
snap or soft clank will be emitted
from the hybrid battery (traction
battery), under the front seats,
when the hybrid system is started
or stopped.
● Sounds from the hybrid system
may be heard when the back door
is open.
● Sounds may be heard from the
transmission when the gasoline
engine starts or stops, when driv-
ing at low speeds, or during idling.
● Engine sounds may be heard
when accelerating sharply.
● Sounds may be heard due to
1-4. Hybrid system
regenerative braking when the
brake pedal is depressed or as
the accelerator pedal is released.
● Vibration may be felt when the
gasoline engine starts or stops.
● Cooling fan sounds may be heard
from the air intake vent under the
front seat.
■ Maintenance, repair, recycling,
and disposal
Contact your Toyota dealer regard-
ing maintenance, repair, recycling
and disposal. Do not dispose of the
vehicle yourself.
Acoustic Vehicle Alerting
System
When driving with the gasoline
engine stopped, a sound, which
changes in accordance with the
driving speed, will be played in
order to warn people nearby of
the vehicle's approach. The
sound will stop when the vehicle
speed exceeds approximately
22 mph (35 km/h).
■ Acoustic Vehicle Alerting Sys-
tem
In the following cases, the Acoustic
Vehicle Alerting System may be dif-
ficult for surrounding people to hear.
● In very noisy areas
● In the wind or the rain
■ If "Acoustic Vehicle Alerting
System Malfunction Visit Your
Dealer" is displayed on the
multi-information display
The system may be malfunctioning.
Have the vehicle inspected by your
Toyota dealer.
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