
470
SIENNA_OM_01999-08001_(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. 600)
• Does the brake pedal have the correct amount of free play? ( P. 600)
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.

578
SIENNA_OM_01999-08001_(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. 223, 226)
● 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. 583)
● 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. 579)
If the engine will not start even though correct starting proce-
dures are being followed ( P. 223, 226), 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)

5798-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(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. 583)
● 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

602
SIENNA_OM_01999-08001_(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 3022 5 F
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 light s or with bulb type daytime running
lights
*3: Vehicles with bulb type stop/tail lights

626
SIENNA_OM_01999-08001_(U)
9-2. Customization
■Illumination (P. 419)
*: If equipped
■
Seat belt reminder ( P. 539)
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

655Alphabetical index
SIENNA_OM_01999-08001_(U)
Hands-free system (for cellular phone)
*............. 366
HDMI port
*
Head restraints ........................ 172
Headlights
Automatic High Beam system ......... ....................... 242
Discharge headlights
precautions ......................... 526
Light switch ........................... 237
Manual headlight leveling dial ...................................... 239
Replacing light bulbs..... 512, 514
Wattage ................................ 602
Heaters Front automatic air conditioning system ............ 404
Heated steering wheel .......... 416
Outside rear view mirrors...... 408
Rear automatic air conditioning system ............ 413
Seat heaters ......................... 416
Hill-start assist control............ 291
Hood ......................................... 475
Warning message ................. 548
Hooks Cargo .................................... 433
Grocery bag .......................... 443
Retaining hooks (floor mat)..... 24
Horn .......................................... 176 I/M test ...................................... 472
Identification
Engine .................................. 595
Vehicle .................................. 595
Ignition switch
(engine switch) .............. 223, 226
Illuminated entry system ........ 421
Indicators ................................... 82
Initialization Items to initialize ................... 628
Maintenance data ................. 467
Power back door................... 137
Power sliding door ................ 128
Tire pressure warning system .......... ...................... 489
Inside rear view mirror ............ 178
Interior lights ........................... 419 Wattage ................................ 602
Intuitive parking assist ........... 273 Function ................................ 273
Warning message................. 548
Jack Positioning a floor jack.......... 477
Vehicle-equipped jack .......... 565
Jack handle .............................. 567
Jam protection function
Moon roof ............................. 189
Power back door................... 137
Power sliding doors .............. 127
Power windows..................... 184
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