2012 TOYOTA SIENNA maintenance

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4
Maintenance and care
SIENNA_U (OM45477U)
4-2. Maintenance
Maintenance requirements
■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.
To ensure safe and economical driv ing, day-to-day care and regular
maintenance are essential. It is the owner’s responsibility to perform
regular checks. Toyota recommends performing the following main-
tenance:
■ General maintenance
General maintenance should be performed on a daily basis.
This can be done by yourself or by a Toyota dealer.
■ Scheduled maintenance
Scheduled maintenance should be performed at specified inter-
vals according to the maintenance schedule.
For details about maintenance items and schedules, refer to the
“Scheduled Maintenance Guide” or “Owner’s Manual Supplement”.
■Do-it-yourself maintenance
You can perform some maintenance procedures by yourself.
Please be aware that do-it-yourself maintenance may affect war-
ranty coverage.
The use of Toyota Repair Manuals is recommended.
For details about warranty coverage, see the separate “Owner’s War-
ranty Information Booklet” or “Owner’s Manual Supplement”.

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

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4-2. Maintenance
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Maintenance and care
SIENNA_U (OM45477U)
CAUTION
■
If your vehicle is not properly maintained
Improper maintenance could result in serious damage to the vehicle and
possible serious injury or death.
■ Handling of the battery
● Engine exhaust, some of its constituents, and a wide variety of automobile
components contain or emit chemicals known to the State of California to
cause cancer and birth defects and other reproductive harm. Work in a
well ventilated area.
● Oils, fuels and fluids contained in vehicles as well as waste produced by
component wear contain or emit chemicals known to the State of
California to cause cancer and birth defects or other reproductive harm.
Avoid exposure and wash any affected area immediately.
● Battery posts, terminals and related accessories contain lead and lead
compounds which are known to cause brain damage. Wash your hands
after handling. ( P. 667)

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4-2. Maintenance
SIENNA_U (OM45477U)
General maintenance
Engine compartment
ItemsCheck points
Battery Check the indicator and
connections. (
P. 667)
Brake fluid Is the brake fluid at the correct
level?
(P. 665)
Engine coolant Is the engine coolant at the
correct level? (
P. 662)
Engine oil Is the engine oil at the correct
level?
(P. 657)
Exhaust system There should not be any fumes or
strange sounds.
Radiator/condenser The radiator and condenser
should be free from foreign
objects.
(P. 664)
Washer fluid Is there sufficient washer fluid?
(P. 671)
Listed below are the general maintenance items that should be per-
formed at the intervals specified in the “Owner’s Warranty Informa-
tion Booklet” or “Owner’s Manual Supplement/Scheduled
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.

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4-2. Maintenance
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Maintenance and care
SIENNA_U (OM45477U)
Vehicle interior
ItemsCheck points
Accelerator pedal • The accelerator pedal should
move smoothly (without uneven
pedal effort or catching).
Automatic transaxle “Park” mech-
anism • When parked on a slope with the
shift lever in P, is the vehicle
securely stopped?
Brake pedal • Does the brake pedal move
smoothly?
• Does the brake pedal have appro- priate clearance from the floor?
• Does the brake pedal have the correct amount of free play?
Brakes • The vehicle should not pull to one
side when the brakes are applied.
• The brakes should work effec- tively.
• The brake pedal should not feel spongy.
• The brake pedal should not get too close to the floor when the
brakes are applied.
Head restraints • Do the head restraints move
smoothly and lock securely?

644 4-2. Maintenance
SIENNA_U (OM45477U)
ItemsCheck points
Indicators/buzzers • Do the indicators and buzzers
function properly?
Lights • Do all the lights come on?
• Are the headlights aimed cor-
rectly?
Parking brake • Does the parking brake lever or
pedal move smoothly?
• When parked on a slope with the parking brake on, is the vehicle
securely stopped?
Seat belts • Do the seat belts operate
smoothly?
• The seat belts should not be dam- aged.
Seats • Do the seat controls operate
properly?
Steering wheel • Does the steering wheel rotate
smoothly?
• Does the steering wheel have the correct amount of free play?
• There should not be any strange sounds coming from the steering
wheel.

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4-2. Maintenance
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Maintenance and care
SIENNA_U (OM45477U)
Vehicle exterior
ItemsCheck points
Doors • Do the doors operate smoothly?
Engine hood • Does the engine hood lock sys-
tem work properly?
Fluid leaks • There should not be any signs of
fluid leakage after the vehicle has
been parked.
Tires • Is the tire inflation pressure cor-
rect?
• The tires should not be dam- aged or excessively worn.
• Have the tires been rotated according to the maintenance
schedule?
• The wheel nuts should not be loose.
CAUTION
■ If the engine is running
Turn the engine off and ensure that there is adequate ventilation before per-
forming maintenance checks.

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4-2. Maintenance
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Emission inspection and maintenance (I/M) programs
Some states have vehicle emission inspection programs which
include OBD (On Board Diagnostics) checks. The OBD system moni-
tors the operation of th e emission control system.
■If the malfunction indicator lamp comes on
The OBD system determines that a problem exists somewhere
in the emission control system. Your vehicle may not pass the I/
M test and may need to be repaired. Contact your Toyota dealer
to service the vehicle.
■ Your vehicle may not pass the I/M test in the following situa-
tions:
●When the battery is disconnected or discharged
Readiness codes that are se t during 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 tempo-
rary malfunction and your vehi cle may not pass the I/M test.
■ When the malfunction indicator lamp still remains on after
several driving trips
The error code in the OBD system will not be cleared unless the
vehicle is driven 40 or more times.
■ If your vehicle does not pass the I/M test
Contact your Toyota dealer to prepare the vehicle for re-testing.