display TOYOTA SIENNA HYBRID 2021 Owners Manual (in English)

SIENNA_OM_OM08031U_(U)
1
2
3
4
5
6
7
8
9
Pictorial indexSearch by illustration
For safety
and securityMake sure to read through them
(Main topics: Child seat, theft deterrent system)
Vehicle status
information and
indicatorsReading driving-related information
(Main topics: Meters, multi-information display)
Before driving
Opening and closing the doors and windows,
adjustment before driving
(Main topics: Keys, doors, seats, power windows)
Driving
Operations and advice which are necessary for
driving
(Main topics: Starting hybrid system, refueling)
Interior featuresUsage of the interior features
(Main topics: Air conditioner, storage features)
Maintenance
and careCaring for your vehicle and maintenance
procedures
(Main topics: Interior and exterior, light bulbs)
When trouble
arisesWhat to do in case of malfunction and emergency
(Main topics: 12-volt battery discharge, flat tire)
Vehicle
specificationsVehicle specifications, customizable features
(Main topics: Fuel, oil, tire inflation pressure)
For ownersReporting safety defects for U.S. owners, and seat
belt and SRS airbag instructions for Canadian
owners
IndexSearch by symptom
Search alphabetically

2TABLE OF CONTENTS
For your information...................6
Reading this manual ................ 11
How to search .......................... 12
Pictorial index .......................... 14
1-1. For safe use Before driving ................... 32
For safe driving ................ 33
Seat belts ......................... 35
SRS airbags ..................... 41
Front passenger occupant classification system ...... 51
Exhaust gas precautions.. 56
1-2. Child safety Riding with children .......... 57
Child restraint systems..... 58
1-3. Emergency assistance Safety Connect ................ 75
1-4. Hybrid system Hybrid system features .... 79
Hybrid system precautions ....................................... 83
1-5. Theft deterrent system Immobilizer system .......... 88
Alarm................................ 89
2-1. Instrument cluster Warning lights and indicators....................................... 92
Gauges and meters (with 4.2- inch display) ................... 97Gauges and meters (with 7-
inch display) ................ 101
Multi-information display 104
Head-up display ............ 118
Energy monitor/ consumption
screen.......................... 122
3-1. Key information Keys .............................. 128
3-2. Opening, closing and lock- ing the doors
Front doors .................... 132
Sliding doors.................. 137
Back door ...................... 150
Smart key system .......... 164
3-3. Adjusting the seats Front seats .................... 169
Rear seats ..................... 171
Driving position memory 178
Head restraints .............. 182
3-4. Adjusting the steering wheel and mirrors
Steering wheel............... 185
Inside rear view mirror ... 186
Digital Rear-view Mirror . 188
Outside rear view mirrors .................................... 198
3-5. Opening, closing the win- dows and moon roof
Power windows ............. 201
Moon roof ...................... 204
1For safety and security
2
Vehicle status
information and
indicators
3Before driving

21Pictorial index
■Instrument panel
Power switch ................................................... ...................P.231
Starting the hybrid system/chan ging the modes ..........P.231, 234
Emergency stop of the hybrid system ............................ ......P.459
When the hybrid system will not start .......................... ........P.501
Warning messages ..............................................................P.477
Shift lever.................................................... ........................P.238
Changing the shift position.................................... ...............P.239
Precautions against towing ..................................................P.462
When the shift lever does not move............................. ........P.240
Meters ......................................................... ..................P.97, 101
Reading the meters/adjusting the instrument panel
light .......................................................... ........P.97, 99, 101, 103
Warning lights/indicator lights ................................ ................P.92
When the warning lights come on ................................ ........P.466
Multi-information display . .................................................P.104
Display .................................................................................P.104A
B
C
D

22Pictorial index
Energy monitor.....................................................................P.122
When the warning messages are displayed ........................ P.477
Turn signal lever ................................................................P.242
Headlight switch ................................................................P.248
Headlights/parking lights/tail lights/
license plate lights/daytime running lights .................... ........P.248
Fog lights
*1............................................................... ............P.254
Windshield wiper and washer switch ..............................P.254
Rear window wiper and washer switch ...........................P.257
Usage.......................................................... .................P.254, 257
Adding washer fluid ..............................................................P.421
Warning messages ..............................................................P.477
Emergency flasher switch ....................................... ..........P.458
Hood lock release lever ........................................ .............P.413
Tilt and telescopic steering control switch/
tilt and telescopic steering lock release lever ................ .P.185
Adjustment ..................................................... ......................P.185
Driving position memory
*1....................................................P.178
Air conditioning system ............................. .......................P.348
Usage.......................................................... .........................P.348
Rear window defogger ........................................... ..............P.350
Multimedia system
*1, 2
*1
: If equipped
*2: Refer to “NAVIGATI ON AND MULTIMEDIA SYSTEM OWNER’S MAN-
UAL”.
E
F
G
H
I
J
K

811-4. Hybrid system
1
For safety and security
hybrid system, contact your Toyota
dealer.
■Charging the 12-volt battery
 P.508
■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 To yota 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 illuminate d. 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 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 n ot dispose of the
vehicle yourself.
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.
Acoustic Vehicle Alerting
System

821-4. Hybrid system
*: This function can only be used in
the mainland U.S.A. It cannot be
used in other states and territo-
ries, including Alaska and Hawaii.
This system operates based on
the driving situation and traffic
information to enhance fuel
economy.
For details about Predictive effi-
cient drive, refer to “NAVIGA-
TION AND MULTIMEDIA
SYSTEM OWNER’S MANUAL”.
■Predictive deceleration sup-
port
 When the vehicle approaches
to predictive deceleration sup-
port points registered in the
navigation system, the “Refer-
ence operation range” ( ) of
the ECO Accelerator Guid-
ance ( P.108) on the multi-
information display will be
turned off to encourage the
driver to reduce excessive
acceleration.
 The engine braking force will be increased according to the
driving conditions to more effi-
ciently charge the hybrid bat-
tery (traction battery) after the
accelerator pedal is released.
■Predictive SOC control
The following types of control
are performed based on data
such as road and traffic informa-
tion during route guidance by
the navigation system to help
ensure that the vehicle effi-
ciently uses electricity.
 When there is a long downhill
slope along the route, the sys-
tem reduces the hybrid bat-
tery (traction battery) level
before reaching the slope to
help ensure charging capacity
for regenerative braking while
traveling downhill.
 When traffic congestion is
predicted along the route, the
system helps ensure a certain
battery level before reaching
congested roads to reduce
the frequency of starting the
engine to charge the hybrid
battery (traction battery) due
to low battery levels.
Predictive efficient drive
(vehicles with navigation
system)
*
A

861-4. Hybrid system
When a certain level of impact is
detected by the impact sensor,
the emergency shut off system
blocks the high voltage current
and stops the fuel pump to mini-
mize the risk of electrocution
and fuel leakage. If the emer-
gency shut off system activates,
your vehicle will not restart. To
restart the hybrid system, con-
tact your Toyota dealer.
A message is automatically dis-
played when a malfunction
occurs in the hybrid system or
an improper operation is
attempted.
If a warning message is shown
on the multi-information display,
read the message and follow the
NOTICE
■Hybrid battery (traction bat-
tery) air intake vents
●Make sure not to block the air
intake vents with anything, such
as a seat cover, plastic cover, or
luggage. If the vents become
blocked, the hybrid battery
(traction battery) input and out-
put may be restricted, leading to
a reduction in hybrid battery
(traction battery) output and a
malfunction.
●When dust etc. has accumu-
lated in the air intake vents,
clean them with a vacuum
cleaner to prevent the vents
from clogging.
●Do not get water or foreign
materials in the air intake vents
as this may cause a short circuit
and damage the hybrid battery
(traction battery).
●Do not carry large amounts of
water such as water cooler bot-
tles in the vehicle. If water spills
onto the hybrid battery (traction
battery), the battery may be
damaged. Have the vehicle
inspected by your Toyota
dealer.
●There are filters installed to the
air intake vents. When the filters
remain noticeably dirty even
after cleaning the air intake
vents, filters cleaning or
replacement is recommended.
For information regarding filters
cleaning or replacement, refer
to P.444.
●If “Maintenance Required for
Traction Battery Cooling Parts
See Owner’s Manual” is shown
on the multi-information dis-
play, the air intake vents and fil-
ters may be clogged. Refer to
P.443for information on how to
clean the air intake vents.
Emergency shut off sys-
tem
Hybrid warning message

871-4. Hybrid system
1
For safety and security
instructions.
■If a warning light comes on, a
warning message is displayed,
or the 12-volt battery is discon-
nected
The hybrid system may not start. In
this case, try to start the system
again. If the “READY” indicator does
not come on, contact your Toyota
dealer.

91
2
2
Vehicle status information and indicators
Vehicle status informa-tion and indicators
2-1. Instrument cluster
Warning lights and indica-tors ............................... 92
Gauges and meters (with 4.2-inch display) ........... 97
Gauges and meters (with 7- inch display) .............. 101
Multi-information display .................................. 104
Head-up display .......... 118
Energy monitor/consump- tion screen................. 122

922-1. Instrument cluster
2-1.Instrument cluster
For the purpose of explanation, the following illustrations display all
warning lights and indicators illuminated.
With 4.2-inch display
The units used on the meters and some indicators may differ dep ending on
the target region.
With 7-inch display
Warning lights and indicators
The warning lights and indicators on the instrument cluster,
center panel and outside rear view mirrors inform the driver
of the status of the vehicle’s various systems.
Instrument cluster