Page 720 of 876
720 4-3. Do-it-yourself maintenance
SIENNA_OM_OM45472U_(U)■
Under the driver’s side instrument panel
FuseAmpereCircuit
1P/OUTLET15 APower outlets
2 RAD NO.2 7.5 A Audio system, navigation system,
rear seat entertainment system
3 ECU-ACC 10 A Main body ECU, clock, shift lock
system, power rear view mirror
control, multiplex communication
system
4 CIG 15 A Power outlets
5 GAUGE NO.1 10 A Emergency flashers, back up
lights, navigation system, multi
information display, automatic tran-
saxle, multiport fuel injection sys-
tem/sequential multiport fuel
injection system, charging system
Page 746 of 876
746 5-2. Steps to take in an emergency
SIENNA_OM_OM45472U_(U)
Stop the vehicle immediately.The following warnings indicate the possibility of damage to the vehi-
cle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact your Toyota dealer.
Have the vehicle inspected immediately.Failure to investigate the cause of the following warnings may lead to
the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Toyota dealer immediately.
Warning lightWarning light/Details
Charging system warning light Indicates a malfunction in the vehicle’s charging system
Low engine oil pressure warning light Indicates that the engine oil pressure is too low
Warning lightWarning light/Details
(U.S.A.)
(Canada) Malfunction indicator lamp
Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transaxle control system
SRS warning light Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
Page 789 of 876
5
When trouble arises
789
5-2. Steps to take in an emergency
SIENNA_OM_OM45472U_(U)
■
Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■ To prevent battery discharge
● Turn off the headlights and the audio system while the engine is off.
● Turn off any unnecessary electrical components when the vehicle is run-
ning at a low speed for an extended period, such as in heavy traffic.
■ When the battery is removed or discharged
● The power sliding door (if equipped) must be initialized. ( P. 67)
● The power back door (if equipped) must be initialized. ( P. 82)
● The moon roof (if equipped) must be initialized. ( P. 150)
■ Charging the battery
The electricity stored in the battery will discharge gradually even when the
vehicle is not in use, due to natural discharge and the draining effects of cer-
tain electrical appliances. If the vehicle is left for a long time, the battery may
discharge, and the engine may be unable to start. (The battery recharges
automatically during driving.)
CAUTION
■Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the battery:
● Make sure the jumper cable is connected to the correct terminal and that it
is not unintentionally in contact with any other than the intended terminal.
● Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
● Do not smoke, use matches, cigarette lighters or allow open flame near
the battery.
Page 807 of 876
807
6-1. Specifications
6
Vehicle specifications
SIENNA_OM_OM45472U_(U)
Electrical system
Automatic transaxle
*: The fluid capacity is a reference q
uantity. If replacement is necessary,
contact your Toyota dealer.
Battery
Open voltage* at
68 F (20 C): 12.6 12.8 V Fully charged
12.2 12.4 V Half charged
11 . 8
12.0 V Discharged
(
*: Voltage checked 20 minutes after the engine
and all the lights turned off)
Charging rates 5 A max.
Fluid capacity*
2WD models
AWD models6.9 qt. (6.5 L, 5.7 Imp.qt.)
7.1 qt. (6.7 L, 5.9 Imp.qt.)
Fluid type
Toyota Genuine ATF WS
NOTICE
■Transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause
deterioration in shift quality, locking up of your transmission accompanied by
vibration and, ultimately, damage to the vehicle’s transmission.
Page 869 of 876
869
Alphabetical index
SIENNA_OM_OM45472U_(U)
Towing
Dinghy towing ....................... 391
Trailer towing ........................ 371
Traction control ....................... 329
TRAC ........................................ 329
Trailer towing........................... 371
Trip information display ......... 254
Trip meter................................. 244
Turn signal lights Replacing light bulbs ............ 725
Switch ................................... 241
Wattage ................................ 812
Valet key..................................... 32
Vanity lights Vanity lights .......................... 605
Wattage ................................ 812
Vanity mirrors .......................... 605
VDIM ......................................... 330
Vehicle data recordings............ 26
Vehicle identification number................................... 801
Vehicle stability control .......... 329
VSC ........................................... 329 Warning buzzers
Brake system ........................745
Open door .............................749
Seat belt reminder .................749
Warning lights Active Torque Control 4WD
system ................................752
Anti-lock brake system ..........747
Automatic High Beam indicator light.......................748
Brake assist system ..............747
Brake system ........................745
Charging system .... ...............746
Cruise control indicator light .....................................748
Electric power steering system ................................747
Engine oil pressure ...............746
Low fuel level ........................749
Low washer fluid ...................750
Maintenance required reminder light ......................751
Malfunction indicator lamp ....746
Master warning light ..............749
Open door .............................749
Pre-collision system ..............747
Pretensioners ........................746
Radar cruise control indicator light.......................748
Seat belt reminder light .........749
Slip indicator light ..................747
SRS airbags ..........................746
Third seat warning light ......... 751
Tire pressure warning light ....750
Warning messages ..................760
Washer Checking ...............................687
Preparing and checking
before winter .......................367
Switch............................284, 292
Washing and waxing ...............646
V
W
Page 873 of 876
873
What to do if...
SIENNA_OM_OM45472U_(U)
■
Warning lights
P. 749
or
P. 7 4 5P. 749
P. 7 4 6P. 749
P. 7 4 6P. 751
P. 747
or
P. 7 4 6P. 749
P. 7 4 6P. 749
P. 752
or
P. 7 4 7P. 747
P. 7 4 7P. 748
P. 7 5 1P. 748
P. 7 5 0P. 748
P. 7 5 0P. 747
*: The light flashes to indicate a malfunction.
Brake system warning
lightOpen door warning light
Driver’s seat belt
reminder light
Charging system
warning lightFront passenger’s seat belt
reminder light
Low engine oil pressure
warning lightThird seat warning light
Malfunction indicator
lamp
Master warning light
SRS warning lightLow fuel level warning
light
“ABS” warning light
Pre-collision system
warning light
*
Slip indicator lightCruise control indicator
light
*
Maintenance required
reminder lightRadar cruise control
indicator light
*
Tire pressure warning
lightAutomatic High Beam
indicator light
*
Low washer fluid
warning lightBSM warning light
Electric power steering
system warning light
Active torque control
4WD system warning
light
