2017 TOYOTA SIENNA service

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7Maintenance and care
7-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 468
Cleaning and protecting the vehicle interior ........... 471 7-2. Maintenance
Maintenance requirements ................... 474
General maintenance........ 477
Emission inspection and maintenance (I/M)
programs ......................... 480
7-3. Do-it-yourself maintenance Do-it-yourself service precautions ..................... 481
Hood ................................. 483
Positioning a floor jack ...... 485
Engine compartment ......... 486
Tires .................................. 496
Tire inflation pressure ....... 504
Wheels .............................. 507
Air conditioning filter.......... 509
Wireless remote control/ electronic key battery ...... 511
Checking and replacing fuses ............................... 514
Light bulbs......................... 517

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4757-2. Maintenance
7
Maintenance and care
■Repair and replacement
It is recommended that genuine Toyota parts be used for repairs to ensure
performance of each system. If non-Toyota parts are used in replacement or if
a repair shop other than a Toyota dealer performs repairs, confirm the war-
ranty coverage.
■ Resetting the message indicating maintenance is required (U.S.A. only)
After the required maintenance is preformed according to the maintenance
schedule, please reset the message.
To reset the message, follow the procedures described below:
Using the odometer and trip meter display
Turn the engine switch to the “LOCK” position (vehicles without a smart key
system) or off (vehicles with a smart key system) with the trip meter A read-
ing shown. ( P. 88)
While pressing the odometer/trip meter display change button ( P. 87),
turn the engine switch to the “ON” position (vehicles without a smart key
system) or IGNITION ON mode (vehicles with a smart key system) (do not
start the engine because otherwise the reset mode will be canceled).
Continue to press and hold the button until the trip meter displays “000000”
and the multi-information display indicates that the reset is complete.
Using the multi-information display (vehicles with color display)
While the engine is running, switch the multi-information display to the
“Settings” screen. ( P. 624)
Select “Maintenance Reset” on the “Settings” screen.
Select “Yes” on the “Maintenance Reset” screen.
“Maintenance Reset Complete” will be displayed on the multi-information dis-
play when the reset procedure has been completed.
■ 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 cove rage. If any problem should arise
while your vehicle is under warranty, your Toyota dealer will promptly take
care of it.
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7-2. Maintenance
7
Maintenance and care
General maintenance
Listed below are the general maintenance items that should be
performed at the intervals specified in the “Owner’s Warranty
Information Booklet” or “Owner’s Manual Supplement/Sched-
uled Maintenance Guide”. It is recommended that any problem
you notice should be brought to the attention of your Toyota
dealer or qualified service shop for advice.
Engine compartment
ItemsCheck points
BatteryCheck connections. (P. 492)
Brake fluidIs the brake fluid at the correct level?
(P. 491)
Engine coolantIs the engine coolant at the correct
level? (P. 489)
Engine oilIs the engine oil at the correct level?
(P. 487)
Exhaust systemThere should not be any fumes or strange
sounds.
Radiator/condenserThe radiator and condenser should be free
from foreign objects. (P. 491)
Washer fluidIs there sufficient washer fluid? ( P. 495)

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7-2. Maintenance
Emission inspection and maintenance (I/M)
programs
The OBD system determines that a problem exists somewhere in the
emission control system. Your vehicl e may not pass the I/M test and
may need to be repaired. Contact your Toyota dealer to service the
vehicle.
● When the battery is disconnected or discharged
Readiness codes that are set duri ng ordinary driving are erased.
Also, depending on your driving habits, the readiness codes may
not be completely set.
● When the fuel tank cap is loose
The malfunction indicator lamp comes on indicating a temporary
malfunction and your vehicle may not pass the I/M test.
The error code in the OBD system will not be cleared unless the vehi-
cle is driven 40 or more times.
Contact your Toyota dealer to prepare the vehicle for re-testing.
Some states have vehicle emission inspection programs which
include OBD (On Board Diagnos tics) checks. The OBD system
monitors the operation of the emission control system.
If the malfunction indicator lamp comes on
Your vehicle may not pass the I/M test in the following situations:
When the malfunction indicator lamp still remains on after sev-
eral driving trips
If your vehicle does not pass the I/M test

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4897-3. Do-it-yourself maintenance
7
Maintenance and care
The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine is cold.Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line.
WARNING
■Used engine oil
●Used engine oil contains potentially harmful contaminants which may
cause skin disorders such as inflammation and skin cancer, so care
should be taken to avoid prolonged and repeated contact. To remove used
engine oil from your skin, wash thoroughly with soap and water.
● Dispose of used oil and filters only in a safe and acceptable manner. Do
not dispose of used oil and filters in household trash, in sewers or onto the
ground. Call your Toyota dealer, service station or auto parts store for
information concerning recycling or disposal.
● Do not leave used engine oil within the reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on a regular basis.
■ When replacing the engine oil
●Be careful not to spill engine oil on the vehicle components.
● Avoid overfilling, or the engine could be damaged.
● Check the oil level on the dipstick every time you refill the vehicle.
● Be sure the engine oil filler cap is properly tightened.
Engine coolant
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5037-3. Do-it-yourself maintenance
7
Maintenance and care
NOTICE
■Repairing or replacing tires, wheels, tire pressure warning valves,
transmitters and tire valve caps
●When removing or fitting the wheels, tires or the tire pressure warning
valves and transmitters, contact your Toyota dealer as the tire pres-
sure warning valves and transmitters may be damaged if not handled
correctly.
●Make sure to install the tire valve caps. If the tire valve caps are not
installed, water could enter the tire pressure warning valves and the
tire pressure warning valves could be bound.
●When replacing tire valve caps, do not use tire valve caps other than
those specified. The cap may become stuck.
■To avoid damage to the tire pressure warning valves and transmit-
ters
When a tire is repaired with liquid sealants, the tire pressure warning
valve and transmitter may not operate properly. If a liquid sealant is
used, contact your Toyota dealer or other qualified service shop as soon
as possible. Make sure to replace the tire pressure warning valve and
transmitter when replacing the tire. ( P. 497)
■Driving on rough roads
Take particular care when driving on roads with loose surfaces or pot-
holes.
These conditions may cause losses in tire inflation pressure, reducing
the cushioning ability of the tires. In addition, driving on rough roads
may cause damage to the tires themselves, as well as the vehicle’s
wheels and body.
■If tire inflation pressure of e ach tire becomes low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

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7-3. Do-it-yourself maintenance
WARNING
■When replacing wheels
●Do not use wheels that are a different size from those recommended in
the Owner’s Manual, as this may result in a loss of handling control.
●Never use an inner tube in a leaking wheel which is designed for a
tubeless tire. Doing so may result in an accident, causing death or seri-
ous injury.
■When installing the wheel nuts
●Never use oil or grease on the wheel bolts or wheel nuts.
Oil and grease may cause the wheel nuts to be excessively tightened,
leading to bolt or disc wheel damage. In addition, the oil or grease can
cause the wheel nuts to loosen and the wheel may fall off, causing an
accident and resulting in death or serious injury. Remove any oil or
grease from the wheel bolts or wheel nuts.
■Use of defective wheels prohibited
Do not use cracked or deformed wheels.
Doing so could cause the tire to leak air during driving, possibly causing
an accident.
NOTICE
■Replacing tire pressure warning valves and transmitters
●Because tire repair or replacement may affect the tire pressure warn-
ing valves and transmitters, make sure to have tires serviced by your
Toyota dealer or other qualified service shop. In addition, make sure to
purchase your tire pressure warning valves and transmitters at your
Toyota dealer.
●Ensure that only genuine Toyota wheels are used on your vehicle.
Tire pressure warning valves and transmitters may not work properly
with non-genuine wheels.
●Be sure to install the wheel nuts with
the tapered ends facing inward.
Installing the nuts with the tapered
ends facing outward can cause the
wheel to break and eventually cause
the wheel to come off while driving,
which could lead to an accident
resulting in death or serious injury.Tapered
portion

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8
When trouble arises
8-2. Steps to take in an emergency
If your vehicle needs to be towed
The following may indicate a problem with your transaxle. Contact
your Toyota dealer or commercial towing service before towing.
●The engine is running but the vehicle does not move.
● The vehicle makes an abnormal sound.
Do not tow with a sling-type truck
to prevent body damage.
If towing is necessary, we re commend having your vehicle
towed by your Toyota dealer or commercial towing service,
using a wheel-lift type tr uck or flat bed truck.
Use a safety chain system for all towing, and abide by all state/
provincial and local laws.
2WD models: If towing your vehicle with a wheel-lift type truck
from the front, the vehicle’s rear wheels and axles must be in
good conditions. ( P. 540, 541)
If they are damaged, use a to wing dolly or flat bed truck.
AWD models: If towing your vehicl e with a wheel-lift type truck,
use a towing dolly. ( P. 540, 541)
Situations when it is necessary to contact dealers before towing
Towing with a sling-type truck