battery location TOYOTA SIENNA HYBRID 2023 Owners Manual

1343-2. Opening, closing and locking the doors
( P.89)
■Impact detection door lock
release system
In the event that t he vehicle is sub-
ject to a strong impact, all the doors
are unlocked. Depending on the
force of the impact or the type of
accident, however, the system may
not operate.
■Operation signals (vehicles
with entry function)
A buzzer sounds and the emer-
gency flashers flash to indicate that
the doors have been
locked/unlocked . (Locked: Once;
Unlocked: Twice)
■Security feature
If a door is not opened within
approximately 60 seconds after the
vehicle is unlocked, the security fea-
ture automatically locks the vehicle
again. (Vehicles with entry function:
However, depending on the location
of the electronic key, the key may
be detected as being in the vehicle.
In this case, vehicle may be
unlocked.)
■When the door cannot be
locked by the lock sensor on
the upper part of the door han-
dle (vehicles with entry func-
tion)
If the door will no t lock even when
the topside sensor area is touched,
try touching both the topside and
underside sensor areas at the same
time. When gloves are being worn,
remove the gloves.
■Door lock buzzer
If an attempt to lock the doors using the entry function or wireless remote
control is made when a door is not
fully closed, a buzzer sounds contin-
uously for 5 seconds. Fully close the
door to stop the buzzer, and lock the
vehicle once more.
■Setting the alarm (if equipped)
Locking the doors will set the alarm
system. ( P.89)
■Conditions affecting the opera-
tion of the smart key system or
wireless remote control
 P.166
■If the smart key system or the
wireless remote control does
not operate properly
●Use the mechanical key to lock
and unlock the doors. ( P.502)
●Replace the key battery with a
new one if it is depleted. ( P.444)
■If the 12-volt b attery is dis-
charged
The doors cannot be locked and
unlocked using the smart key sys-
tem or wireless remote control. Lock
or unlock the do ors using the
mechanical key. ( P.133, 502)
■Rear seat reminder function
●In order to r emind you not to for-
get the luggage, etc. on the rear
seat, when the power switch is
turned to OFF afte r any of the fol-
lowing conditions are met, a
buzzer will sound and a message
will be displayed on the multi-
information display for approxi-
mately 6 seconds.
• The hybrid system is started
within 10 minutes after opening
and closing a sliding door.
• A sliding door has been opened and closed after the hybrid system
is started. However, if a sliding
door is opened and then closed
within approximately 2 seconds,
the rear seat rem inder function
may not operate.
●The rear seat reminder function
determines that t he luggage, etc.

4196-3. Do-it-yourself maintenance
6
Maintenance and care
The 12-volt battery is located in
the right-hand side of luggage
compartment.
■Before recharging
When recharging, the 12-volt bat-
tery produces hydrogen gas which
is flammable and explosive. There-
fore, observe the following precau-
tions before recharging:
●If recharging with the 12-volt bat-
tery installed on the vehicle, be
sure to disconnect the ground
cable.
●Make sure the power switch on
the charger is off when connecting
and disconnecting the charger
cables to the 12-volt battery.
■After recharging/reconnecting
the 12-volt battery
●Unlocking the doors using the
smart key system may not be pos-
sible immediately after reconnect-
ing the 12-volt battery. If this
happens, use the wireless remote
control or the mechanical key to
lock/unlock the doors.
●Start the hybrid system with the
power switch in ACC. The hybrid
system may not start with the
power switch turned off. How-
ever, the hybrid system will oper-
ate normally from the second attempt.
●The power switch mode is
recorded by the vehicle. If the 12-
volt battery is reconnected, the
vehicle will return the power
switch mode to the status it was in
before the 1
2-volt battery was dis-
connected. Make sure to turn off
the power switch before discon-
nect the 12-volt battery. Take
extra care when connecting the
12-volt battery if the power switch
mode prior to discharge is
unknown.
If the hybrid system will not start
even after multiple attempts at all
methods above, contact your
Toyota dealer.12-volt battery
Location
WARNING
■Chemicals in the 12-volt bat-
tery
The 12-volt battery contains poi-
sonous and corrosive sulfuric acid
and may produce hydrogen gas
which is flammable and explosive.
To reduce the risk of death or
serious injury, take the following
precautions while working on or
near the 12-volt battery:
●Do not cause sparks by touch-
ing the 12-volt battery terminals
with tools.
●Do not smoke or light a match
near the 12-volt battery.
●Avoid contact with eyes, skin
and clothes.
●Never inhale or swallow electro-
lyte.
●Wear protective safety glasses
when working near the 12-volt
battery.
●Keep children away from the
12-volt battery.

572Alphabetical Index
Memory recall function ......... 181
Power easy access system .. 179
Driving support system informa- tion display ........................... 110
Dynamic radar cruise control with full-speed rangeFunction ............................... 291
Warning message ................ 475
E
ECB (Electronically Controlled Brake System) ...................... 335
Eco drive mode ...................... 334
EDR (Event data recorder)......... 8
E-Four (Electronic On-Demand AWD system) ........................ 336
Elapsed time ........................... 111
Electric motor Location.................................. 79
Specification ......................... 518
Electric Power Steering (EPS) Function ............................... 336
Warning light ........................ 466
Electronically Controlled Brake System (ECB) ....................... 335
Electronic key Battery-saving function......... 166
If the electronic key does not operate properly ................. 502
Replacing the battery ........... 444
Emergency, in case of If a warning buzzer sounds .. 464
If a warning light turns on ..... 464
If a warning message is dis-played................................. 475
If the 12-volt battery is dis- charged .............................. 504
If the electronic key does not operate properly ................. 502
If the fuel filler door cannot be opened ............................... 501
If the hybrid sy stem will not start ...........................................499
If the vehicle is submerged or water on the road is rising ..458
If you have a flat tire .....480, 490
If you lose your keys.............500
If you think something is wrong ...........................................463
If your vehicle becomes stuck ...........................................512
If your vehicle has to be stopped in an emergency .................457
If your vehicle needs to be towed ...........................................460
If your vehicle ove rheats ......509
Emergency flashers ...............456
Energy monitor .......................122
Engine Compartment........................413
Hood .....................................410
Identification number ............518
Engine coolant Capacity ...............................520
Checking ..............................416
Preparing and checking before winter ..................................344
Warning light ........................465
Engine coolant temperature gauge ...............................97, 101
Engine oil Capacity ...............................519
Checking ..............................413
Preparing and checking before winter ..................................344
Warning light ........................465
Engine oil maintenance data .415
Enhanced Vehicle Stability Con- trol (Enhanced VSC ) .............336
Enhanced VSC (Enhanced Vehi- cle Stability Control).............336
EPS (Electric Po wer Steering)
Function................................336
Warning light ........................466

574Alphabetical Index
Heated steering wheel ........... 361
HeatersFront automatic air conditioning system ................................ 348
Heated steering wheel ......... 361
Outside rear view mirrors ..... 350
Rear automatic air conditioning system ................................ 358
Seat heaters ......................... 361
High mounted stoplight Replacing light bulbs ............ 448
Hill-start assist control .......... 336
Hood ........................................ 410
Hooks Cargo hooks ......................... 372
Coat hooks ........................... 388
Grocery bag hooks ............... 387
Retaining hooks (floor mat) .... 32
Horn ......................................... 187
Hybrid battery (tr action battery)
Location.................................. 83
Specification ......................... 519
Hybrid battery (traction battery) air intake vents ............... 85, 440
Hybrid battery (traction battery) air intake vents and filters ... 440
Hybrid battery air vent ............. 85
Hybrid system .......................... 79 ACC...................................... 237
Acoustic Vehicle Alerting System............................................. 81
Emergency shut off system .... 86
Energy monitor/consumption screen ................................ 122
EV drive mode...................... 239
High voltage components....... 83
How to start the hybrid system ........................................... 234
Hybrid battery (traction battery) air vents.............................. 440
Hybrid Electric Vehicle driving tips...................................... 342 Hybrid System Indicator .97, 101
Hybrid system precautions .....83
If the hybrid sys
tem will not start
...........................................499
If your vehicle has to be stopped in an emergency .................457
Ignition switch (power switch) ...........................................234
Overheating ..........................509
Power (ignition) switch .........234
Regenerative braking .............80
Starting the hybrid system ....234
Hybrid System I ndicator .98, 102,
121
Hybrid transmissio n ...............241
S mode .................................244
I
I/M test .....................................406
Identification Engine ..................................518
Vehicle..................................517
Ignition switch (power switch) ...............................................234Auto power off fun ction.........238
Changing the power switch modes.................................237
If your vehicle has to be stopped in an emergency .................457
Starting the hybrid system ....234
Illuminated entry system .......365
Immobilizer system ..................88
Indicators ..................................94
Initialization Items to initialize ...................551
Maintenance .........................403
Oil maintenance ...................415
Tire pressure warning system...........................................427
Inside rear view m irror ...187, 189
Instrument panel light control99, 103

Alphabetical Index581
Tire inflation pressure display function............................... 424
Tire pressure warning system ........................................... 424
Uniform Tire Quality Grading 531
Warning light ........................ 470
Tools .............. .................. 481, 490
Top tether strap ... ..................... 71
Total load capacity ......... 217, 220
Towing Dinghy towing....................... 232
Towing eyelet ....................... 490
Trailer sway control .............. 336
Trailer towing................ 221, 222
Toyota Safety Sense .............. 265 AHB (Automatic High Beam) 253
Dynamic radar cruise control with full-speed range .......... 291
LTA (Lane Tracing Assist).... 278
PCS (Pre-Collision System) . 270
RSA (Road Sign Assist) ....... 288
TRAC (Traction Control) ........ 336
Traction battery (Hybrid battery) ................................................. 83Hybrid battery (traction battery) air intake vents ..................... 85
Location.................................. 83
Specification ......................... 518
Warning messages ................ 86
Traction Control (TRAC) ........ 336
Traction motor (e lectric motor)79
Trailer sway control ............... 336
Trailer towing .................. 221, 222
Transmission Driving mode select switch... 334
Hybrid transmission.............. 241
Trip meters ....... ................. 97, 101
Turn signal lights Replacing light bulbs ............ 448
Turn signal lever................... 245U
USB charging ports ................379
V
Vanity lightsVanity lights ..........................374
Wattage ................................524
Vanity mirrors .........................374
Vehicle data recordings .............7
Vehicle identification number517
Vehicle Stability Control (VSC) ...............................................336
Ventilators (seat ventilators) .361
VSC (Vehicle Stab ility Control)
...............................................336
W
Warning buzzers Approach warning ................298
Brake hold ............................469
Brake Override System ........469
Brake system ........................464
Downshifting .........................244
Drive-Start Control ................469
Electric power steering .........466
High coolant temperature .....465
Hybrid system overheat ........465
Intuitive parking assist OFF indi- cator ...................................467
Intuitive parking assist ..........312
Low engine oil pressure .......465
LTA (Lane Traci ng Assist) ....278
LTA indicator ........................467
Open door ............................136
Open hood............................136
Open window........................203
PKSB OFF indicator .............468
Pre-collision warn ing ............270
RCD OFF indicator ...............468
RCTA (Rear Cross Traffic Alert)