2023 TOYOTA SIENNA HYBRID battery

567What to do if... (Troubleshooting)
porary way. (P.503)
 Is the 12-volt battery dis-
charged? ( P.504)
 Is the power switch in ON?
If you cannot release the shift
lever by depressing the brake
pedal with the power switch in
ON ( P.243)
 Is the window lock switch
pressed?
The power window except for
the one at the driver’s seat
cannot be operated if the win-
dow lock switch is pressed.
( P.204)
 The auto power off function
will be operated if the vehicle
is left in ACC or ON (the
hybrid system is not operat-
ing) for a period of time.
( P.238)
 The seat belt reminder light is
flashingAre the driver and the passengers
wearing the seat belts? ( 
P.471)
The parking brake indicator is
on
Is the parking br ake released?
( 
P.246)
Depending on the situation,
other types of warning buzzer
may also sound. ( P.464, 475)
 Did anyone inside the vehicle
open a door during setting the
alarm?
The sensor detects it and the
alarm sounds. ( P.89)
To stop the alarm, turn the power
switch to ON or start the hybrid sys-
tem.
 Is the message displayed on
the multi-information display?
Check the message on the
multi-information display.
( P.475)
 When a warning light turns on
or a warning message is dis-
played, refer to P.464, 475.
The shift lever cannot be
shifted from P even if you
depress the brake pedal
The windows do not open
or close by operating the
power window switches
The power switch is
turned off automatically
A warning buzzer sounds
during driving
An alarm is activated and
the horn sounds (if
equipped)
A warning buzzer sounds
when leaving the vehicle
A warning light turns on
or a warning message is
displayed

570Alphabetical Index
Hands Free Power Back door........................................... 155
Power back door .................. 153
Wireless remote control ....... 153
Back-up lights Replacing light bulbs ............ 448
Wattage ................................ 524
Battery (12-volt battery) ......... 419 If the 12-volt battery is dis-charged .............................. 504
Preparing and c hecking before
winter.................................. 344
Replacing ............................. 507
Warning light ........................ 464
Battery (traction battery) ......... 83
Blind Spot Monitor (BSM) ...... 302 Blind Spot Monitor function .. 305
Rear Cross Traffic Alert function........................................... 308
Bottle holders ......................... 369
Brake Brake Hold ........................... 249
Fluid ............................. 417, 522
Parking brake ....................... 246
Regenerative braking ............. 80
Warning light ........................ 464
Brake assist ............................ 335
Brake Hold .............................. 249
Break-in tips ........ ................... 211
Brightness control Instrument panel light control99, 103
BSM (Blind Spot Monitor) ...... 302 Blind Spot Monitor function .. 305
Rear Cross Traffic Alert function........................................... 308
C
Care Aluminum wheels ................. 396
Exterior ................................. 396
Interior .................................. 399 Seat belts .............................399
Cargo capacity ................217, 220
Cargo hooks............................372
Cargo net hooks .....................372
Chains......................................346
Child-protectors......................142
Child restraint system ..............58 Fixed with a LATCH system ...68
Fixed with a seat belt..............63
Front passenger occupant clas-sification system ...................51
Points to remember ................58
Riding with children ................57
Types of child restraint system installation method ...............60
Using an anchor bracket ........71
Child safety ...............................57 12-volt battery precautions .419, 508
Airbag precautions .................46
Back door precautions..........150
Child restraint system .............60
Heated steering wheel and seat heater precautio ns..............361
How your child should wear the seat belt ................................36
Moon roof precautions..........206
Power window lock switch ....204
Power window precautions...203
Removed key battery precau- tions ....................................445
Seat belt extender precautions .............................................36
Seat belt precautions..............35
Seat heater precautions .......361
Cleaning ..........................396, 399 Aluminum wheels .................396
Exterior .................................396
Hybrid battery (tr action battery)
air intake vents and filters...440
Interior ..................................399
Radar sensor ........................266

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 Index575
Interior lights .......................... 363Switch................................... 364
Wattage ................................ 524
Intuitive parking assist Function ............................... 312
Warning message ................ 314
J
JackPositioning a floor jack ......... 412
Vehicle-equipped jack .......... 490
Jack handle ............................. 490
Jam protection function Moon roof ............................. 205
Power back door .................. 157
Power windows .................... 202
Sliding doors ........................ 143
K
Keyless entrySmart key system................. 165
Wireless remote control ....... 130
Keys ......................................... 128 Battery-saving function......... 166
Electronic key ....................... 128
If the electronic key does not operate properly ................. 502
If you lose your keys ............ 500
Key number plate ................. 128
Keyless entry................ 130, 165
Mechanical key .................... 131
Power switch ........................ 234
Replacing the battery ........... 444
Warning buzzer .................... 165
Wireless remote control key . 130
Knee airbags ............................. 41
L
Lane Tracing Assist (LTA) ..... 278 Operation ............................. 278 Warning messages
...............288
Language (multi-information dis- play) ...............................115, 539
LATCH anchors ........................68
Lever Auxiliary catch lever .............410
Hood lock release lever ........410
Shift lever .............................241
Turn signal lever . ..................245
Wiper lever ...................257, 260
License plate lights Light switch...........................251
Replacing light bulbs ............448
Wattage ................................524
Light bulbs Replacing .............................448
Wattage ................................524
Lights AHB (Automatic High Beam) 253
Fog light switch .....................257
Headlight switch ...................251
Illuminated entry system .......365
Interior lights .........................364
Personal lights ......................364
Rear interior light ..................364
Replacing light bulbs ............448
Turn signal lever . ..................245
Vanity lights ..........................374
Wattage ................................524
LTA (Lane Tracing Assist) .....278 Operation..............................278
Warning messages ...............288
Luggage compartment light 152, 156Wattage ................................524
M
Maintenance Do-it-yourself maintenance ..408
General maintenance ...........404
Maintenance data .................516
Maintenance requirements ...402

578Alphabetical Index
Head restraints ..................... 183
Rear side marker lights Light switch .......................... 251
Replacing light bulbs ............ 448
Rear turn signal lights Replacing light bulbs ............ 448
Turn signal lever................... 245
Wattage ................................ 524
Rear view mirror Digital Rear-view Mirror........ 189
Inside rear view mirror.......... 187
Outside rear view mirrors ..... 199
Rear window defogger ........... 350
Rear window wiper ................. 260
Refueling ................................. 262 Capacity ............................... 518
Fuel types..................... 518, 526
If the fuel filler door cannot be opened ............................... 501
Opening the fuel tank cap .... 263
Regenerative braking ............... 80
Replacing Electronic key battery ........... 444
Fuses ................................... 446
Light bulbs ............................ 448
Tires ..................................... 490
Wireless remote control battery........................................... 444
Reporting safety defects for U.S. owners................................... 554
Resetting the message indicat- ing maintenance is required 403
Road Sign Assist .................... 288
RSA (Road Sign Assist) ......... 288
S
Safety Connect ......................... 75
Seat belt reminder light ......... 471
Seat belts .................................. 35 Adjusting the seat belt shoulder anchor height ....................... 39
Automatic Locking Retractor .. 39 Child restraint sys
tem installation
.............................................63
Cleaning and maintaining the seat belt ..............................399
Emergency Locking Retractor 38
How to wear your seat belt .....36
How your child should wear the seat belt ................................36
Pregnant women, proper seat belt use .................................35
Reminder light and buzzer ...471
Seat belt extender ..................36
Seat belt pretensioners ..........39
SRS warning light .................466
Seat heaters ............................361
Seating capacity .............220, 517
Seat position memory ............179
Seats Adjustment precautions 171, 177
Adjustment ...................170, 172
Child seats/child restraint system installation ............................58
Cleaning ...............................399
Driving position memory .......179
Folding third seats ................175
Head restraint .......................183
Installing seco nd center seats
...........................................175
Properly sitting in the seat ......33
Removing second center seats ...........................................174
Seat heaters ....... ..................361
Seat position memory...........179
Seat ventilators.....................361
Stowing third seats ...............176
Seat ventilators .. .....................361
Secondary Collision Brake ....336
Sensor AHB (Automatic High Beam) 253
Automatic headlight system .252
BSM (Blind Spot M onitor) .....304
Digital Rear-view Mirror ........193

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)

582Alphabetical Index
........................................... 303
RCTA OFF indicator............. 468
Seat belt reminder ................ 471
Vehicle sway warning........... 282
Warning lights ABS ...................................... 466
Brake hold operated indicator........................................... 469
Brake Override System ........ 469
Brake system ....................... 464
Charging system .................. 464
Drive-Start Control ............... 469
Electric power steering ......... 466
Engine .................................. 465
High coolant temperature ..... 465
Hybrid system overheat ....... 465
Intuitive parking assist OFF indi- cator ................................... 467
Low engine oil pressure ....... 465
Low fuel level ....................... 470
LTA indicator ........................ 467
Malfunction indicator lamp ... 465
Parking brake indicator ........ 470
PCS warning light................. 467
PKSB (Parking Support Brake) ........................................... 469
PKSB OFF indicato r ............. 468
RCD OFF indicator............... 468
RCTA OFF indicator............. 468
Seat belt reminder light ........ 471
Slip indicator......................... 469
SRS ...................................... 466
Tire pressure ........................ 470
Warning messages ................ 475
Washer Checking .............................. 418
Low washer fluid warning mes-sage ........................... 418, 475
Preparing and c hecking before
winter.................................. 344
Switch........................... 257, 260
Washing and waxing .............. 396 Weights
Cargo capacity .............217, 220
Load limits ............................220
Wheels .....................................437 Replacing wheels .................437
Size ......................................523
Window glasses Power windows ....................202
Window lock switch ...............204
Windows Power windows ....................202
Rear window defogger .........350
Washer .........................257, 260
Windshield defogge r ..............349
Windshield wiper d e-icer .......353
Windshield wipers Intermittent windshield wipers...........................................257
Position.........................257, 260
Rain-sensing windshield wipers ...........................................257
Winter driving tips ..................344
Wireless charger.....................381
Wireless remote control.........130 Battery-saving function .........166
Locking/Unlocking ................130
Panic mode ..........................130
Replacing the battery ...........444
For vehicles with Entune Audio, Entune Audio Plus
or Entune Premium Audio,
refer to the “NAVIGA-
TION AND MULTIMEDIA
SYSTEM OWNER’S MAN-
UAL” for information
regarding the equipment
listed below.
· Navigation system