
541
SIENNA_OM_OM08013U_(U)
8
When trouble arises
8-2. Steps to take in an emergency
If a warning light turns on or a warning
buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by your Toyota dealer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
(U.S.A.)
(Canada)
Brake system warning light (warning buzzer)*1
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is
fully released the system is operating normally.
Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer. Continuing to drive the vehi-
cle may be dangerous.
Charging system warning light*2
Indicates a malfunction in the vehicle’s charging system
Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Low engine oil pressure warning light (warning
buzzer)
*2
Indicates that the engine oil pressure is too low.
Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
(U.S.A.)
(Canada)
Malfunction indicator lamp Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system;
• The electronic automatic transaxle control system
Have the vehicle inspected by your Toyota dealer
immediately.

5478-2. Steps to take in an emergency
SIENNA_OM_OM08013U_(U)
8
When trouble arises
WARNING
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Toyota
dealer. The vehicle will become extrem ely unstable during braking, and the
ABS system may fail, which could cause an accident resulting in death or
serious injury.
■ When the electric power steerin g system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavie r than usual when operating, hold
firmly and operate using more force than usual.
■
If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could
cause a loss of vehicle control and result in death or serious injury.
Vehicles with standard tires:
●Stop your vehicle in a safe place as soon as possible. Adjust the tire
inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inflation pres-
sure adjustment, it is probable that you have a flat tire. Check the tires.
If a tire is flat, change it with th e spare tire and have the flat tire
repaired by the nearest Toyota dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate,
you could lose control of the steering wheel or the brakes.
Vehicles with run-flat tires:
●Decelerate to the lowest appropriate speed as soon as possible. Do
not drive over 50 mph (80 km/h).
●Check and adjust the tire inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inflation pres-
sure adjustment, it is probable that you have a flat tire. Have the tire
replaced by the nearest Toyota dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate,
you could lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

5578-2. Steps to take in an emergency
SIENNA_OM_OM08013U_(U)
8
When trouble arises
Indicates abnormal engine oil pressureA buzzer also sounds.
Immediately stop the vehicle in a safe place
and contact your Toyota dealer.
(AWD models)
Indicates a malfunction in the Active Torque
Control 4WD system
A buzzer also sounds.
Have the vehicle inspected by your Toyota
dealer.
Vehicles without a smart key system:
Indicates that the engine switch is turned to the
“LOCK” position, the key is removed and the
driver’s door is opened while the lights are turned
on.
Vehicles with a smart key system:
Indicates that the engine switch is turned off and
the driver’s door is opened while the lights are
turned on. A buzzer also sounds.
Turn the lights off.
Warning messageDetails/Actions
(Flashes)

654Alphabetical index
SIENNA_OM_OM08013U_(U)
AlarmAlarm ...................................... 77
Warning buzzer..................... 541
Anchor brackets ........................ 60
Antenna Smart key system ................. 143
Radio .................................... 337
Anti-lock brake system
(ABS) ...................................... 293Function ................................ 293
Warning light ......................... 542
Warning message ................. 553
Approach warning ................... 268
Armrest ..................................... 444
Assist grips .............................. 445
Audio input
*............................ 323
Audio system
*......................... 318
Antenna ................................ 337
A/V input port
*
Audio input*.......................... 323
Audio visual input
*
AUX port/USB port*............. 323
Blu-ray Disc™
*
CD player*............................ 338
DVD disc
*
DVD player*
HDMI port*
iPod*.................................... 344
MP3/WMA disc
*................... 338
Optimal use
*........................ 335
Portable music player
*......... 353
Radio
*.................................. 336
Rear seat entertainment
system
*
Steering wheel audio switch
*............................... 321
USB memory
*...................... 348
Audio visual input
*
Automatic High Beam ............. 244 Warning message ................. 558
Automatic light control system .................................... 242 Automatic transaxle
Automatic transaxle .............. 233
If the shift lever cannot be
shifted from P ..................... 584
S mode ................................. 234
AUX port
*................................. 323
Auxiliary box ........................... 434
A/V input port
*
Back door ................................. 133
Back-up lights Replacing light bulbs ............ 526
Wattage ................................ 606
Battery Battery checking ................... 488
If the vehicle has discharged battery.............. 587
Preparing and checking before winter ...................... 313
Warning light......................... 541
Warning message................. 555
Blind Spot Monitor (BSM) ....... 305
Bluetooth
®
Audio system*...................... 365
Hands-free system
*
(for cellular phone) ............. 367
Bottle holder ............................ 432
Brake Fluid ...................................... 487
Parking brake ....................... 238
Warning light......................... 541
Warning message......... 554, 558
Brake assist ............................. 293
Break-in tips............................. 195
Brightness control Instrument light control ........... 89
BSM (Blind Spot Monitor) ....... 305 Blind Spot Monitor
function............................... 308
Rear Cross Traffic Alert function............................... 310
B

656Alphabetical index
SIENNA_OM_OM08013U_(U)
Daytime running light system .................................... 242
Defogger Outside rear view mirrors...... 412
Rear window ......................... 412
Windshield ............................ 412
Differential Rear differential .................... 603
Dimension ................................ 598
Dinghy towing .......................... 224
Display Drive information............... 90, 95
Dynamic radar cruise control................................. 263
Fuel consumption information.......................... 100
Multi-information
display ............................ 90, 93
Warning messages ............... 550
Do-it-yourself maintenance .... 477
Door courtesy lights
Door courtesy lights .............. 423
Wattage ................................ 606
Doors Automatic door locking and unlocking system ......... 115
Back door.............................. 133
Door lock............... 110, 121, 133
Front doors ........................... 110
Open door warning
buzzer/light ......................... 543
Open door warning message ..................... 551, 552
Outside rear view mirrors...... 181
Sliding door child-protectors ................... 125
Sliding doors ......................... 121 Driving
Break-in tips.......................... 195
Correct posture ....................... 26
Procedures ........................... 194
Winter driving tips ................. 313
Driving position memory ........ 169 Driving position memory ....... 170
Memory recall function ......... 171
Power easy access system .......... ...................... 169
Dynamic radar cruise control
Function ................................ 263
Warning message......... 551, 555
DVD player
*
Eco Driving Indicator ................ 86
EDR (Event data recorder)........ 10
Electric power steering (EPS) ...................................... 293
Function ................................ 293
Warning light......................... 542
Warning message................. 553
Electronic key Battery-saving function ......... 145
If your electronic key does not operate properly ........... 585
Replacing the battery............ 507
Emergency flashers ................ 532
D
E

658Alphabetical index
SIENNA_OM_OM08013U_(U)
Flat tire.............................. 566, 568
Floor mats .................................. 24
FluidAutomatic transaxle .............. 603
Brake .................................... 487
Transfer ................................ 603
Washer ................................. 491
Fog lights
Light switch ........................... 249
Replacing light bulbs............. 519
Wattage ................................ 606
Front automatic air conditioning system ............. 408
Front doors .............................. 110
Front passenger occupant
classification system .............. 50
Front seats ............................... 149
Adjustment ............................ 149
Cleaning................................ 467
Correct driving posture ........... 26
Driver’s seat position memory .............................. 169
Head restraints ..................... 173
Power easy access
system ......... ....................... 169
Seat heaters ......................... 420
Seat position memory ........... 169
Front side marker lights Light switch ........................... 239
Replacing light bulbs..... 521, 523
Wattage ................................ 606
Front turn signal lights Replacing light bulbs..... 521, 522
Turn signal lever ................... 237
Wattage ................................ 606 Fuel
Capacity................................ 600
Fuel gauge.............................. 88
Fuel pump shut off system ... 540
Gas station information......... 668
Information............................ 607
Refueling .............................. 256
Type...................................... 600
Warning light......................... 543
Warning message................. 559
Fuel consumption
information ............................ 100
Fuel filler door ......................... 256 Refueling .............................. 256
Fuel pump shut off system..... 540
Fuses ........................................ 510
Garage door opener ................ 448
Gauges ....................................... 87
Glove box ................................. 427
Grocery bag hooks.................. 447
F
G

659Alphabetical index
SIENNA_OM_OM08013U_(U)
Hands-free system (for cellular phone)
*............. 367
HDMI port
*
Head restraints ........................ 173
Headlights
Automatic High Beam system ......... ....................... 244
Discharge headlights
precautions ......................... 530
Light switch ........................... 239
Manual headlight leveling dial ...................................... 241
Replacing light bulbs..... 516, 518
Wattage ................................ 606
Heaters Front automatic air conditioning system ............ 408
Heated steering wheel .......... 420
Outside rear view mirrors...... 412
Rear automatic air conditioning system ............ 417
Seat heaters ......................... 420
Hill-start assist control............ 293
Hood ......................................... 479
Warning message ................. 552
Hooks Cargo .................................... 437
Grocery bag .......................... 447
Retaining hooks (floor mat)..... 24
Horn .......................................... 177 I/M test ...................................... 476
Identification
Engine .................................. 599
Vehicle .................................. 599
Ignition switch
(engine switch) .............. 225, 228
Illuminated entry system ........ 425
Indicators ................................... 82
Initialization Items to initialize ................... 632
Maintenance data ................. 471
Power back door................... 138
Power sliding door ................ 128
Tire pressure warning system .......... ...................... 493
Inside rear view mirror ............ 179
Interior lights ........................... 423 Wattage ................................ 606
Intuitive parking assist ........... 275 Function ................................ 275
Warning message................. 552
Jack Positioning a floor jack.......... 481
Vehicle-equipped jack .......... 569
Jack handle .............................. 571
Jam protection function
Moon roof ............................. 190
Power back door................... 138
Power sliding doors .............. 127
Power windows..................... 185
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