2012 TOYOTA SIENNA ignition

640 4-2. Maintenance
SIENNA_U (OM45477U)
■Allow inspection and repairs to be performed by a Toyota dealer
● Toyota technicians are well-trained specialists and are kept up to date
with the latest service information. They are well informed about the
operations of all systems on your vehicle.
● Keep a copy of the repair order. It proves that the maintenance that has
been performed is under warranty coverage. If any problem should arise
while your vehicle is under warranty, your Toyota dealer will promptly
take care of it.
■ Reset the maintenance data (U.S.A. only)
After the required maintenance is preformed according to the maintenance
schedule, please reset the maintenance data.
To reset the data, follow the procedures described below:
Vehicles without a smart key system
Switch the display to the trip meter A ( P. 244) and then turn the
engine switch off.
Vehicles with a smart key system
Switch the display to the trip meter A ( P. 244) and then turn the
“ENGINE START STOP” switch off.
Vehicles without a smart key system
While pressing the trip meter reset button ( P. 244), turn the
engine switch to the “ON” position.
Vehicles with a smart key system
While pressing the trip meter reset button ( P. 244), turn the
“ENGINE START STOP” switch to IGNITION ON mode.
Vehicles without a multi-information display
Continue to press and hold the button until the trip meter A displays
“000000”.
Vehicles with a multi-information display
Continue to press and hold the button until “COMPLETE” appears
on the multi-information display.
STEP1
STEP2
STEP3

649
4-3. Do-it-yourself maintenance
4
Maintenance and care
SIENNA_U (OM45477U)
CAUTION
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury, observe the following precautions:
■
When working on the engine compartment:
● Keep hands, clothing and tools away from the moving fan and engine
drive belt.
● Be careful not to touch the engine, radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil and other fluids may also be hot.
● Do not leave anything that may burn easily, such as paper and rags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel or the bat-
tery. Fuel and battery fumes are flammable.
● Be extremely cautious when working on the battery. It contains poisonous
and corrosive sulfuric acid.
■ When working near the electric c ooling fans or radiator grille
Vehicles without a smart key system: Be sure the engine switch is off. With
the engine switch in the “ON” position, the electric cooling fans may auto-
matically start to run if the air conditioning is on and/or the coolant tempera-
ture is high. ( P. 664)
Vehicles with a smart key system: Be sure the “ENGINE START STOP”
switch is off. With the “ENGINE START STOP” switch in IGNITION ON
mode, the electric cooling fans may automatically start to run if the air condi-
tioning is on and/or the coolant temperature is high. ( P. 664)

664 4-3. Do-it-yourself maintenance
SIENNA_U (OM45477U)
Radiator and condenserCheck the radiator and condenser and clear away any foreign
objects.
If either of the above parts is extr emely dirty or you are not sure of
their condition, have your vehicle inspected by your Toyota dealer.
CAUTION
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause seri-
ous injuries, such as burns.
■ When the electric cooling fan is operating
Do not touch the engine compartment.
Vehicles without a smart key system: With the engine switch in the “ON”
position, the electric cooling fans may automatically start to run if the air con-
ditioning is on and/or the coolant temperature is high. Be sure the engine
switch is in the “LOCK” position when working near the electric cooling fan or
radiator grille.
Vehicles with a smart key system: With the “ENGINE START STOP” switch
in IGNITION ON mode, the electric cooling fans may automatically start to
run if the air conditioning is on and/or the coolant temperature is high. Be
sure the “ENGINE START STOP” switch is OFF when working near the elec-
tric cooling fans or radiator grille.

675
4-3. Do-it-yourself maintenance
4
Maintenance and care
SIENNA_U (OM45477U)
Turn the engine switch to the “O
N” position (vehicles without a
smart key system) or “ENGINE START STOP” switch to IGNI-
TION ON mode (vehicles with a smart key system).
Press and hold the tire pressure
warning reset switch until the tire
pressure warning light blinks
slowly 3 times.
Vehicles without a smart key system: Wait for a few minutes
with the engine switch in the “ON” position and then turn the
engine switch to the “ACC” or “LOCK” position.
Vehicles with a smart key system: Wait for a few minutes with
the “ENGINE START STOP” switch in IGNITION ON mode
and then turn the “ENGINE START STOP” switch off.
STEP3
STEP4
STEP5

740 5-2. Steps to take in an emergency
SIENNA_U (OM45477U)
■If the tire pressure warning light frequently comes on after blinking
for 1 minute
Vehicles without a smart key system
If the tire pressure warning light frequently comes on after blinking 1
minute when the engine switch is turned to the “ON” position, have it
checked by your Toyota dealer.
Vehicles with a smart key system
If the tire pressure warning light frequently comes on after blinking 1
minute when the “ENGINE START STOP” switch is turned to IGNITION
ON mode, have it checked by your Toyota dealer.
■ Customization that can be co nfigured at Toyota dealer
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features P. 815) However, Toyota recommends that the
seat belt reminder buzzer be operational to alert the driver and front passen-
ger when seat belts are not fastened.

772 5-2. Steps to take in an emergency
SIENNA_U (OM45477U)
Start the engine of the second vehicle. Increase the engine
speed slightly and maintain at that level for approximately 5
minutes to recharge the battery of your vehicle.
Vehicles with a smart key system only: Open and close any
of the doors of your vehicle with the “ENGINE START
STOP” switch off.
Maintain the engine speed of the second vehicle and start
the engine of your vehicle by turning the engine switch to
the “ON” position (vehicles without a smart key system) or
turning the “ENGINE START STOP” switch to IGNITION
ON mode (vehicles with a smart key system).
Once the vehicle’s engine has started, remove the jumper
cables in the exact reverse or der from which they were con-
nected.
Vehicles with a 2GR-FE engine only: To install the engine
cover, conduct the removal procedure in reverse. After
installing, check that the fixed pins are inserted securely.
Once the engine starts, have the vehicle inspected at your Toyota
dealer as soon as possible.STEP3
STEP4
STEP5
STEP6
STEP7

790 6-1. Specifications
SIENNA_U (OM45477U)
Cooling system
Ignition system
Capacity 1AR-FE engine
2GR-FE engine 9.2 qt. (8.7 L, 7.7 Imp.qt.)
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 technol-
ogy
Do not use plain water alone.
Spark plug
Make DENSO 1AR-FE engine
2GR-FE engine
Gap SK16HR11
FK20HR11
0.043 in. (1.1 mm)
NOTICE
■
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust spark plug gap.

847
Alphabetical index
SIENNA_U (OM45477U)
Electric power steering........... 327
Electronic key
If your electronic key
does not operate
properly .............................. 767
Emergency, in case of
If the back door opener is inoperative ........................... 86
If the electronic key
does not operate
properly .............................. 767
If the engine will not start...... 762
If the shift lever cannot be
shifted ................................ 764
If the vehicle has
discharged battery ............. 770
If the warning buzzer sounds... ........................... 729
If the warning light turns on .............................. 729
If the warning message is displayed ............................ 744
If you have a flat tire .... 745, 747
If you lose your keys............. 766
If you think something is wrong ................................. 727
If your vehicle becomes stuck................................... 778
If your vehicle has to be stopped in an emergency ................ 780
If your vehicle needs to be
towed ................................. 723
If your vehicle overheats ...... 775
Emergency flashers ................ 722 Engine
Accessory mode....................231
Compartment ........................655
Engine switch ................226, 229
Hood......................................651
How to start the engine .........................226, 229
Identification number .............785
If the engine will not start ......762
Ignition switch................226, 229
Overheating...........................775
Engine coolant
Capacity ................................790
Checking ...............................662
Preparing and checking before winter .......................352
Engine coolan t temperature
gauge ......................................244
Engine immobilizer system.....159
Engine oil Capacity ................................788
Checking ...............................657
Preparing and checking before winter .......................352
Engine switch ...................226, 229
EPS ............................................327
Event data recorder ...................27E