torque TOYOTA SIENNA HYBRID 2021 Owners Manual (in English)

1122-1. Instrument cluster
(average speed, distance and
total time) can be displayed ver-
tically.
The displayed information
changes according to the “Drive
Info Type” setting (since the sys-
tem was started or between
resets). (P.112)
Use the displayed information as a
reference only.
Following items will be displayed.
“Trip”
• “Average Speed”: Displays the
average vehicl e speed since
hybrid system start
*
• “Distance”: Displ ays the distance
driven since hybrid system start
*
• “Total Time”: Displays the elapsed time since hybrid system
start
*
*
: These items are reset each time the hybrid system stops.
 “Total”
• “Average Speed”: Displays the
average vehicle speed since the
display was reset
*
• “Distance”: Displ ays the distance
driven since the display was
reset
*
• “Total Time”: Displays the elapsed time since the display
was reset
*
*
: To reset, display the desired item and press and hold “OK”.
■Energy monitor
 P.122
■Tire pressure
 P.427
■AWD system display (AWD
models)
Torque distribution display
Displays the drive status of each
wheel in 6 steps from 0 to 5.
G-force display*
Displays the size a nd direction of
the G-force applied to the vehicle
via changes to the position of the
ball on the display.
Maximum G-force course*
This item is linke d with the G-force
display and the co urse of the past
movement of the ba ll is displayed.
Press and hold “OK” to reset the
record.
Wheel spin display
When a tire is spi nning, its icon on
the display changes its color and
blinks.
*: This item is displayed only when driving mode is set to sport mode.
■Safety system status (7-
inch display)
Enable/Disable the following
systems:
 PCS (Pre-Colli sion system)
A
B
C
D

3354-5. Using the driving support systems
4
Driving■ECB (Electronically Con-
trolled Brake System)
The electronically controlled
system generates braking force
corresponding to the brake
operation
■ABS (Anti-lock Brake Sys-
tem)
Helps to prevent wheel lock
when the brakes are applied
suddenly, or if the brakes are
applied while driving on a slip-
pery road surface
■Brake assist
Generates an increased level of
braking force after the brake
pedal is depressed when the
system detects a panic stop sit-
uation
■VSC (Vehicle Stability Con-
trol)
Helps the driver to control skid-
ding when swerving suddenly or
turning on slippery road sur-
faces.
■Enhanced VSC (Enhanced
Vehicle Stability Control)
Provides cooperative control of
the ABS, TRAC, VSC and EPS.
Helps to maintain directional
stability when swerving on slip-
pery road surfaces by con-
trolling steering performance.
■Trailer Sway Control
Helps the driver to control trailer
sway by selectively applying
brake pressure for individual
wheels and reducing driving
torque when trailer sway is
detected.
■TRAC (Traction Control)
Helps to maintain drive power
and prevent the drive wheels
from spinning when starting the
vehicle or accelerating on slip-
pery roads
■Active Cornering Assist
(ACA)
Helps to prevent the vehicle
from drifting to the outer side by
performing inner wheel brake
control when attempting to
accelerate while turning
■Hill-start assist control
Helps to reduce the backward
Driving assist systems
To keep driving safety and
performance, the following
systems operate automati-
cally in response to various
driving situations. Be
aware, however, that these
systems are supplementary
and should not be relied
upon too heavily when oper-
ating the vehicle.
Summary of the driving
assist systems

3414-6. Driving tips
4
Driving
4-6.Driving tips
When using Eco drive mode, the
torque corresponding to the
accelerator pedal depression
amount can be generated more
smoothly than it is in normal
conditions. In addition, the oper-
ation of the air conditioning sys-
tem (heating/cooling) will be
minimized, improving the fuel
economy. (P.333)
The Eco-friendly driving is pos-
sible by keeping the indicator of
Hybrid System Indicator within
Eco area. ( P.98, 102)
Shift the shift lever to D when
stopped at a traffic light, or driv-
ing in heavy traffic etc. Shift the
shift lever to P when parking.
When using the N position,
there is no positive effect on fuel
consumption. In the N position,
the gasoline engine operates but electricity cannot be gener-
ated. Also, when using the air
conditioning system, etc., the
hybrid battery (traction battery)
power is consumed.

Drive your vehicle smoothly.
Avoid abrupt acceleration and
deceleration. Gradual accel-
eration and deceleration will
make more effective use of
the electric motor (traction
motor) without having to use
gasoline engine power.
 Avoid repeated acceleration.
Repeated acceleration con-
sumes hybrid battery (trac-
tion battery) power, resulting
in poor fuel consumption. Bat-
tery power can be restored by
driving with the accelerator
pedal slightly released.
Make sure to operate the brakes
gently and in a timely manner. A
greater amount of electrical
energy can be regenerated
when slowing down.
Repeated acceleration and
deceleration, as well as long
waits at traffic lights, will lead to
bad fuel economy. Check traffic
Hybrid vehicle driving
tips
For economical and ecolog-
ical driving, pay attention to
the following points:
Using Eco drive mode
Use of Hybrid System
Indicator
Changing the shift posi-
tion
Accelerator pedal/brake
pedal operation
When braking
Delays

4937-2. Steps to take in an emergency
7
When trouble arises
When replacing tires on a vehi-
cle with wheel lock nuts, use the
following procedures to remove
and install the wheel lock nuts.
The wheel lock key is stored
together with the tools on the right-hand side of the luggage
compartment. Always return the
wheel lock key to its original
position after use, so that it does
not get lost.
■Removal
For ease of removal, the wheel
lock nut should always be the
first one loosened.
1 Place the wheel lock key on
top of the wheel lock nut,
turning until the wheel lock
key and wheel lock nut pat-
terns engage.
2 Place the wheel nut wrench
on the wheel lock key, and
while applying pressure on
the wheel lock key, loosen
the wheel lock nut.
■Installation
For ease of installation, the
wheel lock nut should always be
the last one tightened.
1 By hand, install a wheel lock
nut on each wheel.
2 Place the wheel lock key on
top of the wheel lock nut,
turning until the wheel lock
key and wheel lock nut pat-
terns engage.
3 Place the wheel nut wrench
on the wheel lock key, and
while applying pressure on
the wheel lock key, tighten
the wheel lock nut to the rec-
ommended torque.
WARNING
●Put the jack prope rly in its jack
point.
●Do not put any part of your body
under the vehicle while it is sup-
ported by the jack.
●Do not start the hybrid system
or drive the vehicle while the
vehicle is suppor ted by the jack.
●Do not raise the vehicle while
someone is inside.
●When raising the vehicle, do not
put an object on or under the
jack.
●Do not raise the vehicle to a
height greater than that required
to replace the tire.
●Use a jack stand if it is neces-
sary to get under the vehicle.
●When lowering the vehicle,
make sure that there is no-one
near the vehicle. If there are
people nearby, warn them
vocally before lowering.
Wheel lock nut (if
equipped)

4967-2. Steps to take in an emergency
tions.
4Assemble the jack handle
and the wheel nut wrench as
shown in the illustration.
5 Raise the vehicle until the tire
is slightly raised off the
ground.
6 Remove all the wheel nuts
and the tire.
When resting the tire on the
ground, place the tire so that the
wheel design faces up to avoid scratching the wheel surface.
WARNING
■Replacing a flat tire
●Observe the fo
llowing precau-
tions. Failure to do so may
result in serious injury.
• Do not touch the disc wheels or the area around the brakes
immediately after the vehicle
has been driven. After the vehi-
cle has been driven the disc
wheels and the area around the
brakes will be extremely hot.
Touching these areas with
hands, feet or oth er body parts
while changing a tire, etc. may
result in burns.
• Remove the spare tire before jacking up the vehicle. If the
spare tire is removed after jack-
ing up the vehicle, the tire car-
rier and the spare tire may
interfere with the jack and cause
a serious accident.
●Failure to follow these precau-
tions could cause the wheel
nuts to loosen and the tire to fall
off, resulting in death or serious
injury.
• Have the wheel nuts tightened
with a torque wrench to 76 ft•lbf
(103 N•m, 10.5 kgf•m) as soon
as possible after changing
wheels.

4977-2. Steps to take in an emergency
7
When trouble arises1Remove any dirt or foreign
matter from the wheel con-
tact surface.
If foreign matter is on the wheel
contact surface, the wheel nuts
may loosen while the vehicle is in
motion, causing the tire to come off.
2Install the tire and loosely
tighten each wheel nut by
hand by approximately the
same amount.
Turn the wheel nuts until the wash-
ers come into contact with the
disc wheel .
3Lower the vehicle.
4 Firmly tighten each wheel nut
two or three times in the
order shown in the illustra-
tion.
Tightening torque:
WARNING

5007-2. Steps to take in an emergency
disc wheel .
2Firmly tighten each wheel nut
two or three times in the
order shown in the illustra-
tion.
Tightening torque:
36.9 ft•lbf (50 N•m, 5.1 kgf•m)
3Installing the cover.
BWARNING
■When stowing the compact
spare tire
Be careful not to catch fingers or
other body parts between the
compact spare tire and the body
of the vehicle.

5208-1. Specifications
■Engine number
The engine number is stamped on the engine block as shown.
Front
Engine
Model2.5 L 4-cylinder (A25A-FXS)
Type4-cylinder in line
, 4-cycle, gasoline
Bore and stroke3.44  4.07 in. (87.5  103.4 mm)
Displacement151.8 cu. in. (2487 cm3)
Valve clearanceAutomatic adjustment
Fuel
Fuel typeUnleaded gasoline only
Octane Rating87 (Research Octane Number 91) or
higher
Fuel tank capacity (Reference)18 gal. (68.2 L, 15 Imp.gal.)
Electric motor (traction motor)
TypePermanent magnet synchronous motor
Maximum output134 kW
Maximum torque199 ft•lbf (270 N•m, 27.5 kgf•m)

5218-1. Specifications
8
Vehicle specifications
Rear (AWD models)
■Oil capacity (Drain and refill
 reference
*)
*: The engine oil capacity is a refer-
ence quantity to be used when
changing the engine oil. Warm up
and turn off the hybrid system,
wait more than 5 minutes, and
check the oil level on the dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is
used in your Toyota vehicle.
Use Toyota approved “Toyota
Genuine Motor Oil” or equiva-
lent to satisfy the following
grade and viscosity.
Oil grade: API SN/RC multigrade engine
oil
Recommended viscosity:
SAE 0W-16
SAE 0W-16 is the best choice
for good fuel economy and good
starting in cold weather.
If SAE 0W-16 is not available,
SAE 0W-20 oil may be used.
However, it must be replaced
with SAE 0W-16 at the next oil
change.
TypePermanent magnet synchronous motor
Maximum output40 kW
Maximum torque89.2 ft•lbf (121 N•m, 12.3 kgf•m)
Hybrid battery (traction battery)
TypeNickel-Metal hy
dride battery
Voltage7.2 V/module
Capacity6.5 Ah (3HR)
Quantity40 modules
Nominal voltage288 V
Lubrication system
With filter4.8 qt. (4.5 L, 4.0 Imp.
qt.)
Without fil-
ter4.4 qt. (4.2 L, 3.7 Imp.
qt.)

5258-1. Specifications
8
Vehicle specifications
17-inch tires
18-inch tires
Tires and wheels
Tire sizeP235/65R17 103T, T155/80R17 111M (spare tire
if equipped)
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Front:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Rear:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Driving at high speeds (above 100 mph [160
km/h]) (in countries wher e such speeds are per-
mitted by law) Add 3 ps i (20 kPa, 0.2 kgf/cm
2 or
bar) to the front tires and rear tires.
Never exceed the maximum cold tire inflation
pressure indicated on the tire sidewall.
Spare:
60 psi (420 kPa, 4.2 kgf/cm
2 or bar)
Wheel size17 x 7J, 17 x 4T (spare)
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Tire sizeP235/60R18 102V, T155/80R17 111M (spare tire
if equipped)
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Front:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Rear:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Driving at high speeds (above 100 mph [160
km/h]) (in countries wher e such speeds are per-
mitted by law) Add 3 ps i (20 kPa, 0.2 kgf/cm
2 or
bar) to the front tires and rear tires.
Never exceed the maximum cold tire inflation
pressure indicated on the tire sidewall.
Spare:
60 psi (420 kPa, 4.2 kgf/cm
2 or bar)