engine overheat TOYOTA SIENNA 2019 Owners Manual (in English)

5
1
8 7
6
5
4
3
2
SIENNA_OM_OM08025U_(U)
9
6-3. Do-it-yourself maintenanceDo-it-yourself service precautions ..................... 405
Hood.................................. 407
Positioning a floor jack ...... 409
Engine compartment ......... 410
Tires .................................. 420
Tire inflation pressure........ 429
Wheels .............................. 432
Air conditioning filter .......... 434
Wireless remote control/ electronic key battery ...... 436
Checking and replacing fuses ............................... 439
Light bulbs ......................... 442
7-1. Essential information Emergency flashers .......... 462
If your vehicle has to be stopped in an
emergency ...................... 463
7-2. Steps to take in an emergency
If your vehicle needs to be towed ......................... 465
If you think something is wrong .............................. 469
Fuel pump shut off system............................. 470
If a warning light turns on or a warning buzzer
sounds ............................ 471
If a warning message is displayed ......................... 481
If you have a flat tire (vehicles with a compact
spare tire) ........................ 485 If you have a flat tire
(vehicles with
run-flat tires) .................... 499
If the engine will not start ................................. 501
If the electronic key does not operate properly
(vehicles with a smart
key system) ..................... 503
If the battery is discharged ....................... 505
If your vehicle overheats......................... 509
If the vehicle becomes stuck ................................ 512
8-1. Specifications Maintenance data (fuel, oil level, etc.) .......... 516
Fuel information ................. 526
Tire information.................. 529
8-2. Customization Customizable features ....... 540
8-3. Initialization Items to initialize ................ 550
7When trouble arises
8Vehicle specifications

16Pictorial index
SIENNA_OM_OM08025U_(U)Front doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 110
Locking/unlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 110
Opening/closing the door glasses . . . . . . . . . . . . . . . . . . . . . . P. 184
Locking/unlocking by using the mechanical key
*1. . . . . . . . . . P. 503
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 481
Sliding doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 121
Locking/unlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 121
Opening from outside . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 122
Opening/closing the rear side windows . . . . . . . . . . . . . . . . . . P. 184
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 481
Back door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 133
Opening from outside . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 134
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 481
Outside rear view mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 181
Adjusting the mirror angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 181
Folding the mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 181
Driving position memory
*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 169
Defogging the mirrors
*1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 336
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 252
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . P. 328
To prevent freezing (windshield wiper de-icer)
*1. . . . . . . . . . . P. 336
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . P. 394
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 258
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 258
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 518
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 420
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . P. 522
Winter tires/tire chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 328
Checking/rotation/tire pressur e warning system . . . . . . . . .P. 420
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . P. 485, 499
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 407
Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 407
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 518
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 509
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 481
1
2
3
4
5
6
7
8

SIENNA_OM_OM08025U_(U)
912. Instrument cluster
2
Instrument cluster
The brightness of the meter panel lights can be adjusted.
Pressing the butto n will adjust the
brightness of the meter panel
lights.
The brightness level of the meters
when the surroundings are bright
(day mode) and dark (night mode)
can be adjusted individually. How-
ever, when in day mode, adjusting
the brightness level will also
change the brightness level of
night mode.
■ Outside temperature display
●In the following situations, the correct outside temperature ma y not be dis-
played, or the display may take longer than normal to change.
• When stopped, or driving at low speeds (less than 12 mph [20 k m/h])
• When the outside temperature has changed suddenly (at the entr ance/
exit of a garage, tunnel, etc.)
● The temperature range that can be displayed is from -40°F (-40° C) to 122°F
(50°C).
When the outside temperature drops below 37°F (3°C), the Low ou tside
temperature indicator will be displayed on the multi-informatio n display.
( P. 86)
● When “--” or “E” is displayed, the system may be malfunctioning. Take your
vehicle to your Toyota dealer.
Meter panel light control
NOTICE
■To prevent damage to the engine and its components
● Do not let the indicator needle of the tachometer enter the red zone, which
indicates the maximum engine speed.
● The engine may be overheating if the engine coolant temperature gauge is
in the red zone (H). In this case, immediately stop the vehicle in a safe
place, and check the engine after it has cooled completely. ( P. 509)

SIENNA_OM_OM08025U_(U)
1974-1. Before driving
4
Driving
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When driving the vehicle
● During normal driving, do not turn off the engine. Turning the engine off
while driving will not cause loss of steering or braking contro l, but the
power assist to these systems will be lost. This will make it m ore difficult to
steer and brake, so you should pull over and stop the vehicle a s soon as it
is safe to do so.
However, in the event of an emergency, such as if it becomes im possible
to stop the vehicle in the normal way: P. 463
● Use engine braking (downshift) to maintain a safe speed when driving
down a steep hill.
Using the brakes continuously may cause the brakes to overheat and lose
effectiveness. ( P. 233)
● Do not adjust the position of the steering wheel, the seat, or the inside or
outside rear view mirrors while driving.
Doing so may result in a loss of vehicle control.
● Always check that all passengers’ arms, heads or other parts of their body
are not outside the vehicle.
● AWD models: Do not drive the vehicle off-road.
This is not an AWD vehicle designed for off-road driving. Proce ed with all
due caution if it becomes unavoidable to drive off-road.
● AWD models: Do not drive across a river or through other bodies of water.
This may cause electric/electronic components to short circuit, damage
the engine or cause other serious damage to the vehicle.
● Do not drive in excess of the speed limit. Even if the legal sp eed limit per-
mits it, do not drive over 85 mph (140 km/h) unless your vehicl e has high-
speed capability tires. Driving over 85 mph (140 km/h) may resu lt in tire
failure, loss of control and possible injury. Be sure to consult a tire dealer
to determine whether the tires on your vehicle are high-speed c apability
tires or not before driving at such speeds.

SIENNA_OM_OM08025U_(U)
1994-1. Before driving
4
Driving
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■If you hear a squealing or scrap ing noise (brake pad wear limit indica-
tors)
Have the brake pads checked and replaced by your Toyota dealer as soon
as possible.
Rotor damage may result if the pads are not replaced when needed.
It is dangerous to drive the vehicle when the wear limits of the brake pads
and/or those of the brake discs are exceeded.
■ When the vehicle is stopped
● Do not race the engine.
If the vehicle is in any gear other than P or N, the vehicle may accelerate
suddenly and unexpectedly, causing an accident.
● In order to prevent accidents due to the vehicle rolling away, always keep
depressing the brake pedal while the engine is running, and app ly the
parking brake as necessary.
● If the vehicle is stopped on an incline, in order to prevent ac cidents caused
by the vehicle rolling forward or backward, always depress the brake pedal
and securely apply the parking brake as needed.
● Avoid revving or racing the engine.
Running the engine at high speed while the vehicle is stopped m ay cause
the exhaust system to overheat, which could result in a fire if combustible
material is nearby.
■ When the vehicle is parked
● Do not leave glasses, cigarette lighters, spray cans, or soft d rink cans in
the vehicle when it is in the sun.
Doing so may result in the following:
• Gas may leak from a cigarette lighter or spray can, and may le ad to a
fire.
• The temperature inside the vehicle may cause the plastic lenses and plastic material of glasses to deform or crack.
• Soft drink cans may fracture, causing the contents to spray ov er the
interior of the vehicle, and may also cause a short circuit in the vehicle’s
electrical components.

200
SIENNA_OM_OM08025U_(U)
4-1. Before driving
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When the vehicle is parked
● Do not leave cigarette lighters in the vehicle. If a cigarette lighter is in a
place such as the glove box or on the floor, it may be lit acci dentally when
luggage is loaded or the seat is adjusted, causing a fire.
● Do not attach adhesive discs to the windshield or windows. Do n ot place
containers such as air fresheners on the instrument panel or da shboard.
Adhesive discs or containers may act as lenses, causing a fire in the vehi-
cle.
● Do not leave a door or window open if the curved glass is coate d with a
metallized film such as a silver-colored one. Reflected sunligh t may cause
the glass to act as a lens, causing a fire.
● Always apply the parking brake, shift the shift lever to P, stop the engine
and lock the vehicle.
Do not leave the vehicle unattended while the engine is running .
● If the vehicle is parked with the shift lever in P but the park ing brake is not
set, the vehicle may start to move, possibly leading to an acci dent.
● Do not touch the exhaust pipe while the engine is running or immediately
after turning the engine off.
Doing so may cause burns.
■ When taking a nap in the vehicle
Always turn the engine off. Otherwise, if you accidentally move the shift
lever or depress the accelerator pedal, this could cause an acc ident or fire
due to engine overheating. Additionally, if the vehicle is park ed in a poorly
ventilated area, exhaust gases may collect and enter the vehicl e, leading to
death or a serious health hazard.

218
SIENNA_OM_OM08025U_(U)
4-1. Before driving
●Reversing with a trailer attach ed is difficult and requires practice.
Grip the bottom of the steering wheel and move your hand to the
left to move the trailer to the left. Move your hand to the rig ht to
move the trailer to the right. (This is generally opposite to r eversing
without a trailer attached.) Avoid sharp or prolonged turning. Have
someone guide you when reversing to reduce the risk of an acci-
dent.
● As stopping distance is increased when towing a trailer, vehicl e-to-
vehicle distance should be increased. For each 10 mph (16 km/h)
of speed, allow at least one v ehicle and trailer length.
● Avoid sudden braking as you may skid, resulting in the trailer jack-
knifing and a loss of vehicle control. This is especially true on wet or
slippery surfaces.
● Avoid jerky starts or sudden acceleration.
● Avoid jerky steering and sharp turns, and slow down before maki ng
a turn.
● Note that when making a turn, the trailer wheels will be closer than
the vehicle wheels to the inside of the turn. Compensate by mak ing
a wider than normal turning radius.
● Slow down before making a turn, in crosswinds, on wet or slippe ry
surfaces, etc.
Increasing vehicle speed can destabilize the trailer.
● Take care when passing other vehicles. Passing requires consider-
able distance. After passing a vehicle, do not forget the lengt h of
your trailer, and be sure you have plenty of room before changi ng
lanes.
● To maintain engine braking efficiency and charging system perfo r-
mance when using engine braking, do not put the transmission in
D. If in the S mode, transmission shift range position must be in 6 or
lower.
● Instability happens more frequently when descending steep or lo ng
downhill grades. Before descending, slow down and downshift. Do
not make sudden downshifts while descending steep or long down-
hill grades.
● Avoid holding the brake pedal down too long or applying the bra kes
too frequently. This could cause the brakes to overheat and result in
reduced braking efficiency.

SIENNA_OM_OM08025U_(U)
2194-1. Before driving
4
Driving
●Due to the added load of the trailer, your vehicle’s engine may over-
heat on hot days (at temperatures over 85°F [30°C]) when drivin g
up a long or steep grade. If the Engine coolant temperature gau ge
overheating, immediately turn off the air conditioning (if in use), pull
your vehicle off the road an d stop in a safe spot. (P. 509)
● Always place wheel blocks under both the vehicle’s and the trai ler’s
wheels when parking. Apply the parking brake firmly, and put th e
transmission in P. Avoid parking on a slope, but if unavoidable , do
so only after perform ing the following:
Apply the brakes and keep them applied.
Have someone place wheel blocks under both the vehicle’s and
trailer’s wheels.
When the wheel blocks are in pl ace, release the brakes slowly
until the blocks absorb the load.
Apply the parking brake firmly.
Shift into P and turn off the engine.
● When restarting afte r parking on a slope:
With the transmission in P, start the engine. Be sure to keep t he
brake pedal pressed.
Shift into a forward gear. If reversing, shift into R.
Release the parking brake and brake pedal, and slowly pull or
back away from the wheel bloc ks. Stop and apply the brakes.
Have someone retrieve the blocks.
1
2
3
4
5
1
2
3
4

SIENNA_OM_OM08025U_(U)
2274-2. Driving procedures
4
Driving
NOTICE
■To prevent battery discharge
Do not leave the engine switch in the “ACC” or “ON” position fo r long peri-
ods of time without the engine running.
■ When starting the engine
● Do not crank the engine for more than 30 seconds at a time. This may
overheat the starter and wiring system.
● Do not race a cold engine.
● If the engine becomes difficult to start or stalls frequently, have the engine
checked immediately.

SIENNA_OM_OM08025U_(U)
2314-2. Driving procedures
4
Driving
■Steering lock
After turning the engine switch off and opening and closing the doors, the
steering wheel will be locked due to the steering lock function.
Operating the engine switch again automatically cancels the ste ering lock.
■ When the steering lock cannot be released
■ Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be sus-
pended if the engine is turned on and off repeatedly in a short period of time.
In this case, refrain from operating the engine. After about 10 seconds, the
steering lock motor will resume functioning.
■ When the engine switch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your Toy-
ota dealer immediately.
■ If the electronic key battery is depleted
P. 436
■ Operation of the engine switch
●If the switch is not pressed shortly and firmly, the engine swi tch mode may
not change or the engine may not start.
● If attempting to restart the engine immediately after turning t he engine
switch off, the engine may not start in some cases. After turni ng the engine
switch off, please wait a few seconds before restarting the eng ine.
The green indicator light on the engine
switch will flash and “Steering Lock
Active” will be shown on the multi-infor-
mation display. Press the engine switch
while turning the steering wheel left and
right.