Toyota Sienna (2019 year). Instruction — part 26
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6
Mainten
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
Items
Check points
Battery
Check connections.
(
Brake fluid
Is the brake fluid at the correct level?
(
Engine coolant
Is the engine coolant at the correct
level?
(
Engine oil
Is the engine oil at the correct level?
(
Exhaust system
There should not be any fumes or strange
sounds.
Radiator/condenser
The radiator and condenser should be free
from foreign objects.
(
Washer fluid
Is there sufficient washer fluid? (
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Vehicle interior
Items
Check points
Accelerator pedal
• The accelerator pedal should move
smoothly (without uneven pedal effort or
catching).
Automatic transaxle “Park”
mechanism
• 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 appropriate
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 effectively.
• 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?
Indicators/buzzers
• Do the indicators and buzzers function
properly?
Lights
• Do all the lights come on?
• Are the headlights aimed correctly?
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 damaged.
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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Mainten
Vehicle exterior
Items
Check points
Doors
• Do the doors operate smoothly?
Engine hood
• Does the engine hood lock system 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 correct?
• The tires should not be damaged or
excessively worn.
• Have the tires been rotated according
to the maintenance schedule?
• The wheel nuts should not be loose.
Windshield wipers/
rear window wiper
• The wiper blades should not show any
signs of cracking, splitting, wear, contam-
ination or deformation.
• The wiper blades should clear the wind-
shield/rear window without streaking or
skipping.
WARNING
?
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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Emission inspection and maintenance (I/M)
programs
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.
?
When the battery is disconnected or discharged
Readiness codes that are set 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 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 Diagnostics) 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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6-3. Do-it-yourself maintenance
6
Mainten
Do-it-yourself service precautions
If you perform maintenance yourself, be sure to follow the cor-
rect procedure as given in these sections.
Items
Parts and tools
Battery condition
(
• Warm water
• Baking soda
• Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
(
• FMVSS No.116 DOT 3 or SAE J1703 brake fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine coolant
level (
• “Toyota Super Long Life Coolant” or similar high
quality ethylene glycol based non-silicate, non-
amine, non-nitrite and non-borate coolant with long-
life hybrid organic acid technology.
For the U.S.A.:
“Toyota Super Long Life Coolant” is pre-mixed with
50% coolant and 50% deionized water.
For Canada:
“Toyota Super Long Life Coolant” is pre-mixed with
55% coolant and 45% deionized water.
• Funnel (used only for adding engine coolant)
Engine oil level
(
• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses (
• Fuse with same amperage rating as original
Light bulbs
(
• Bulb with same number and wattage rating as origi-
nal
• Phillips-head screwdriver
• Flathead screwdriver
• Wrench
Radiator and con-
denser (
Tire inflation
pressure
(
• Tire pressure gauge
• Compressed air source
Washer fluid
(
• Water or washer fluid containing antifreeze (for win-
ter use)
• Funnel (used only for adding water or washer fluid)
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6-3. Do-it-yourself maintenance
WARNING
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 cooling fans or radiator grille
Be sure the engine switch is in the “LOCK” position (vehicles without a
smart key system) or off (vehicles with a smart key system). With the engine
switch in the “ON” position (vehicles without a smart key system) or IGNI-
TION ON mode (vehicles with a smart key system), the electric cooling fans
may automatically start to run if the air conditioning is on and/or the coolant
temperature is high. (
?
Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.
NOTICE
?
If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear
due to dirt in the air.
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6-3. Do-it-yourself maintenance
6
Mainten
Hood
Pull the hood lock release lever.
The hood will pop up slightly.
Pull up the auxiliary catch lever
and lift the hood.
Hold the hood open by inserting
the supporting rod into the slot.
Release the lock from the inside of the vehicle to open the hood.
1
2
3
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6-3. Do-it-yourself maintenance
WARNING
?
Pre-driving check
Check that the hood is fully closed and locked.
If the hood is not locked properly, it may open while the vehicle is in motion
and cause an accident, which may result in death or serious injury.
?
After installing the support rod into the slot
Make sure the rod supports the hood securely from falling down on to your
head or body.
NOTICE
?
When closing the hood
Be sure to return the support rod to its clip before closing the hood. Closing
the hood with the support rod up could cause the hood to bend.
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6-3. Do-it-yourself maintenance
6
Mainten
Positioning a floor jack
?
Front
?
Rear
When using a floor jack, follow the instructions in the manual
provided with the jack and perform the operation safely.
When raising your vehicle with a floor jack, position the jack cor-
rectly. Improper placement may damage your vehicle or cause
injury.
2WD models
AWD models
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2
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6-3. Do-it-yourself maintenance
Engine compartment
Washer fluid tank
(
Engine oil filler cap (
Engine oil level dipstick
(
Engine coolant reservoir
(
Brake fluid reservoir (
Fuse box
(
Battery
(
Electric cooling fans
Condenser
(
Radiator
(
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2
3
4
5
6
7
8
9
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6-3. Do-it-yourself maintenance
6
Mainten
With the engine at operating temperature and turned off, check the oil
level on the dipstick.
?
Checking the engine oil
Park the vehicle on level ground. After warming up the engine
and turning it off, wait more than 5 minutes for the oil to drain
back into the bottom of the engine.
Holding a rag under the end,
pull the dipstick out.
Wipe the dipstick clean.
Reinsert the dipstick fully.
Holding a rag under the end, pull the dipstick out and check the
oil level.
Low
Normal
Excessive
The shape of the dipstick may
differ depending on the type of
vehicle or engine.
Wipe the dipstick and reinsert it fully.
Engine oil
1
2
3
4
5
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2
3
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6-3. Do-it-yourself maintenance
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Adding engine oil
If the oil level is below or near
the low level mark, add engine
oil of the same type as that
already in the engine.
Make sure to check the oil type and prepare the items needed
before adding oil.
Remove the oil filler cap by turning it counterclockwise.
Add engine oil slowly, checking the dipstick.
Install the oil filler cap by turning it clockwise.
?
Engine oil consumption
A certain amount of engine oil will be consumed while driving. In the following
situations, oil consumption may increase, and engine oil may need to be
refilled in between oil maintenance intervals.
?
When the engine is new, for example directly after purchasing the vehicle or
after replacing the engine
?
If low quality oil or oil of an inappropriate viscosity is used
?
When driving at high engine speeds or with a heavy load, when towing, or
when driving while accelerating or decelerating frequently
?
When leaving the engine idling for a long time, or when driving frequently
through heavy traffic
Engine oil selection
Oil quantity (Low
Full)
1.9 qt. (1.8 L, 1.6 Imp.qt.)
Items
Clean funnel
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2
3
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6-3. Do-it-yourself maintenance
6
Mainten
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
1
2
3
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6-3. Do-it-yourself maintenance
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Coolant selection
Only use “Toyota Super Long Life Coolant” or similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with
long-life hybrid organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deion-
ized water.
(Minimum temperature: -31
F [-35C])
Canada:
“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deion-
ized water.
(Minimum temperature: -44
F [-42C])
For more details about engine coolant, contact your Toyota dealer.
?
If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir caps, radiator
cap, drain cock and water pump.
If you cannot find a leak, have your Toyota dealer test the cap and check for
leaks in the cooling system.
WARNING
?
When the engine is hot
Do not remove the radiator/engine coolant reservoir cap.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
NOTICE
?
When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
?
If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.
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Mainten
Check the radiator and condenser and clear away any foreign objects.
If either of the above parts is extremely dirty or you are not sure of
their condition, have your vehicle inspected by your Toyota dealer.
?
Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
“MAX” line
“MIN” line
?
Adding fluid
Lift the cover off.
Make sure to check the fluid type and prepare the necessary item.
Radiator and condenser
WARNING
?
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.
Brake fluid
1
2
Fluid type
FMVSS No.116 DOT 3 or SAE J1703 brake fluid
Item
Clean funnel
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6-3. Do-it-yourself maintenance
?
Brake fluid can absorb moisture from the air
Excess moisture in the brake fluid can cause a dangerous loss of braking effi-
ciency. Use only newly opened brake fluid.
Check the battery as follows:
?
Battery exterior
Make sure that the battery terminals are not corroded and that
there are no loose connections, cracks, or loose clamps.
Terminals
Hold-down clamp
WARNING
?
When filling the reservoir
Take care as brake fluid can harm your hands and eyes and damage
painted surfaces.
If fluid gets on your hands or in your eyes, flush the affected area with clean
water immediately.
If you still experience discomfort, see a doctor.
NOTICE
?
If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads
wear out or when the fluid level in the accumulator is high.
If the reservoir needs frequent refilling, there may be a serious problem.
Battery
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