
474
SIENNA_OM_OM08013U_(U)
7-2. Maintenance
Vehicle interior
ItemsCheck points
Accelerator pedal • The accelerator pedal should move
smoothly (without uneven pedal effort or
catching).
Automatic transaxle “Park”
mechanism• When parked on a slope with the shift
lever in P, is the vehicle securely
stopped?
Brake pedal
• Does the brake pedal move smoothly?
• Does the brake pedal have appropriateclearance from the floor? ( P. 604)
• Does the brake pedal have the correct amount of free play? ( P. 604)
Brakes
• The vehicle should not pull to one side
when the brakes are applied.
• The brakes should work effectively.
• The brake pedal should not feel spongy.
• The brake pedal should not get too close to the floor when the brakes are applied.
Head restraints• Do the head restraints move smoothlyand lock securely?
Indicators/buzzers• Do the indicators and buzzers function
properly?
Lights• Do all the lights come on?
• Are the headlights aimed correctly?
Parking brake
• Does the parking brake lever or pedalmove smoothly?
• When parked on a slope with the parking brake on, is the vehicle securely
stopped?
Seat belts• Do the seat belts operate smoothly?
• The seat belts should not be damaged.
Seats• Do the seat controls operate properly?
Steering wheel
• Does the steering wheel rotatesmoothly?
• Does the steering wheel have the correct amount of free play?
• There should not be any strange sounds
coming from the steering wheel.

582
SIENNA_OM_OM08013U_(U)
8-2. Steps to take in an emergency
If the engine will not start
One of the following may be the cause of the problem:
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
● The engine may be flooded.
Try to restart the engine again following correct starting procedures.
( P. 225, 228)
● There may be a malfunction in the engine immobilizer system.
( P. 75)
One of the following may be the cause of the problem:
● The battery may be discharged. ( P. 587)
● The battery terminal connections may be loose or corroded.
The engine starting system may be malfunctioning due to an electrical
problem such as an electronic key battery depletion or a blown fuse.
However, an interim measure is available to start the engine.
( P. 583)
If the engine will not start even though correct starting proce-
dures are being followed ( P. 225, 228), consider each of the fol-
lowing points:
The engine will not start even though the starter motor operates
normally.
The starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low
volume.
The starter motor does not turn over (vehicles with a smart key
system)

5838-2. Steps to take in an emergency
SIENNA_OM_OM08013U_(U)
8
When trouble arises
One of the following may be the cause of the problem:
●One or both of the battery terminals may be disconnected.
● The battery may be discharged. ( P. 587)
● There may be a malfunction in the steering lock system (vehicle
with a smart key system).
Contact your Toyota dealer if the problem cannot be repaired, or if repair
procedures are unknown.
When the engine does not start, the following steps can be used as an
interim measure to start the engine if the engine switch is functioning
normally:
Set the parking brake.
Shift the shift lever to P.
Turn the engine switch to ACCESSORY mode.
Press and hold the engine switch for about 15 seconds while
depressing the brake pedal firmly.
Even if the engine can be started using the above steps, the system
may be malfunctioning. Have the v ehicle inspected by your Toyota
dealer.
The starter motor does not turn ov er, the interior lights and head-
lights do not turn on, or the horn does not sound.
Emergency start function (vehicles with a smart key system)
1
2
3
4

606
SIENNA_OM_OM08013U_(U)
9-1. Specifications
Light bulbs
Light bulbsBulb No.WTy p e
ExteriorHeadlights (low beam)
Discharge bulbs
Halogen bulbs
35
55 A
B
Headlights (high beam) 9005 60 C
Fog lights 55 B
Front side marker lights
*1W5W 5 D
Front turn signal lights
*17444NA 28/8 E
Front turn signal/parking and
front side marker lights
*23457NAK 28/8 E
Rear turn signal lights WY21W 21 E
Tail lights W5W 5 D
Stop/tail lights
*37443 21/5 D
Back-up lights 921 16 D
License plate lights W5W 5 D
Outer foot lights W6W 6 D
InteriorFront personal/interior lights W5W 5 D
Rear personal/interior lights W5W/168 5 D
Luggage compartment light
5D
Vanity lights 7065T2 2.8 F
Front door courtesy lights 194 5 D
A: D4S discharge bulbs
B: H11 halogen bulbs
C: HB3 halogen bulbs D: Wedge base bulbs (clear)
E: Wedge base bulbs (amber) F: Double end bulbs
*1: Vehicles with LED type daytime running lights
*2: Vehicles without daytime running li ghts or with bulb type daytime running
lights
*3: Vehicles with bulb type stop/tail lights

630
SIENNA_OM_OM08013U_(U)
9-2. Customization
■Illumination (P. 423)
*: If equipped
■
Seat belt reminder ( P. 543)
FunctionDefault settingCustomized
setting
Time elapsed before the
interior lights turn off 15 secondsOff
O–O
7.5 seconds
30 seconds
Operation after the engine
switch is turned to the
“LOCK” position (vehicles
without a smart key sys-
tem) or off (vehicles with a
smart key system) On Off – – O
Operation when the doors
are unlocked On Off – – O
Operation when you
approach the vehicle with
the electronic key on your
person
*
On Off – – O
Ambient lights
*On Off – – O
Time elapsed before the
outer foot lights turn off
*15 seconds Off
O–O
7.5 seconds
30 seconds
Operation of the outer foot
lights when you approach
the vehicle with the elec-
tronic key on your person
*
On Off – – O
Operation of the outer foot
lights when the doors are
unlocked
*
On Off – – O
123
FunctionDefault settingCustomized
setting
Vehicle speed linked seat
belt reminder buzzer On Off – – O
123

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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