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537
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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.
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5518-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)
8
When trouble arises
Indicates that the engine coolant temperature is
too highA buzzer also sounds.
P. 587
Indicates a malfunction in the vehicle’s charging
system.
Immediately stop the vehicle in a safe place
and contact your Toyota dealer. Continuing
to drive the vehicle may be dangerous.
(If equipped)
Indicates that the radar sensor is dirty or covered
with ice A buzzer also sounds.
Clean the sensor.
(If equipped)
Indicates that the dynamic radar cruise control
system is unable to judge vehicle-to-vehicle dis-
tance
A buzzer also sounds.
If the windshield wipers are on, turn them
off or set them to a mode other than AUTO
or high speed wiper operation.
Warning messageDetails/Actions
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5858-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)
8
When trouble arises
■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 running
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. 128)
● The power back door (if equipped) must be initialized. ( P. 137)
● Make sure that the key is not inside the vehicle when recharging or replac-
ing the battery. The key may be locked in the vehicle if the alarm is acti-
vated. ( P. 78)
■ 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.)
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598
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9-1. Specifications
Cooling system
Capacity
Without towing package
11.0 qt. (10.4 L, 9.2 Imp.qt.)
With towing package
11.7 qt. (11.1 L, 9.8 Imp.qt.)
Coolant type Use either of the following.
• “Toyota Super Long Life Coolant”
• A similar high-quality ethylene glycol-based non-silicate, non-amine, non-nitrite, and non-
borate coolant with long-life hybrid organic
acid technology
Do not use plain water alone.
Ignition system
Spark plug
Make
Gap DENSO FK20HR11
0.043 in. (1.1 mm)
NOTICE
■
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust spark plug gap.
Electrical system
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.
Page 662 of 664

662Alphabetical index
SIENNA_OM_01999-08001_(U)
USB memory ............................ 347
USB port ................................... 322
Valet key ................................... 104
Vanity lightsVanity lights .......................... 435
Wattage ................................ 602
Vanity mirrors .......................... 435 Vanity lights .......................... 435
VDIM (Vehicle Dynamics
Integrated Management)....... 292
Vehicle data recordings .............. 9
Vehicle identification number ................................... 595
Vehicle stability control (VSC) ...................................... 291
Voice command system
*....... 400
VSC (Vehicle Stability Control) .................................. 291
Warning buzzers Brake system ....... ................. 537
Electric power steering system ......... ....................... 538
Key reminder ........................ 560
Low engine oil pressure ........ 537
Open door ............................. 539
Seat belt reminder ................ 539 Warning lights
ABS ...................................... 538
Brake system ....... ................. 537
Charging system................... 537
Electric power steering system .......... ...................... 538
Low engine oil pressure........ 537
Low fuel level ........................ 539
Malfunction indicator lamp .... 537
Master warning light ............. 539
Open door............................. 539
Pre-collision system.............. 538
Seat belt reminder light......... 539
Slip indicator light ................. 538
SRS airbags ......................... 538
Third seat warning light ........ 539
Tire pressure warning light ... 539
Warning messages.................. 546
Washer Checking............................... 487
Low washer fluid warning
message............................. 555
Preparing and checking
before winter ...................... 311
Switch ........................... 248, 252
Washing and waxing ............... 460
Weight Cargo capacity...................... 207
Load limits ............................ 594
Weight .................................. 594
Wheels ...................................... 499 Replacing wheels ................. 564
Size....................................... 600
Window glasses ..................... 183
Window lock switch ................ 183
U
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