2017 TOYOTA HIGHLANDER engine

5127-2. Maintenance
HIGHLANDER_U (OM0E017U)
Vehicle exterior
ItemsCheck points
Doors• Do the doors operate smoothly?
Engine hood• Does the engine hood lock system work prop-erly?
Fluid leaks• There should not be any signs of fluid leakageafter the vehicle has been parked.
Tires
• Is the tire inflation pressure correct?
• The tires should not be damaged or exces-sively 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, contamination or
deformation.
• The wiper blades should clear the windshield/
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.

514
HIGHLANDER_U (OM0E017U)
7-3. Do-it-yourself maintenance
Do-it-yourself service precautions
If you perform maintenance by yourself, be sure to follow the
correct procedure as given in these sections.
ItemsParts and tools
Battery condition
(→ P. 527)• Warm water• Baking soda• Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
(→ P. 526)• FMVSS No.116 DOT 3 or SAE J1703 brake fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine coolant
level ( →P. 524)
• “Toyota Super Long Life Coolant” or a similar high
quality ethylene glycol-based non-silicate, non-
amine, non-nitrite and non-borate coolant with long-
life hybrid organic acid technology
For 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
( → P. 521)• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses ( →P. 552)• Fuse with same amperage rating as original
Light bulbs
(→ P. 556)
• Bulb with same number and wattage rating as origi-
nal
• Phillips-head screwdriver
• Flathead screwdriver• Wrench
Radiator and con-
denser (
→P. 525)⎯
Tire inflation
pressure
( → P. 542)• Tire pressure gauge
• Compressed air source
Washer fluid
(→ P. 530)• Water or washer fluid containing antifreeze (for win-
ter use)
• Funnel (used only for adding water or washer fluid)

5157-3. Do-it-yourself maintenance
7
Maintenance and care
HIGHLANDER_U (OM0E017U)
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
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
automatically start to run if the air conditioning is on and/or the coolant tem-
perature is high. ( →P. 525)
Vehicles with a smart key system:
Be sure the engine switch is off.
With the engine switch in IGNITION ON mode, the electric cooling fans may
automatically start to run if the air conditioning is on and/or the coolant tem-
perature is high. ( →P. 525)
■ 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.

5197-3. Do-it-yourself maintenance
7
Maintenance and care
HIGHLANDER_U (OM0E017U)■
2.7 L 4-cylinder (1AR-FE) engine
Engine compartment
Washer fluid tank
(→ P. 530)
Fuse boxes ( →P. 552)
Engine oil level dipstick (→ P. 521)
Engine oil filler cap (→ P. 522)
Engine coolant reservoir (→ P. 524) Battery
(→ P. 527)
Brake fluid reservoir (→ P. 526)
Electric cooling fans
Condenser ( →P. 525)
Radiator ( →P. 525)1
2
3
4
5
6
7
8
9
10

5207-3. Do-it-yourself maintenance
HIGHLANDER_U (OM0E017U)■
3.5 L V6 (2GR-FKS) engine
Washer fluid tank
(→ P. 530)
Fuse boxes ( →P. 552)
Engine oil filler cap (→ P. 522)
Engine oil level dipstick (→ P. 521)
Engine coolant reservoir (→ P. 524) Battery
(→ P. 527)
Brake fluid reservoir (→ P. 526)
Electric cooling fans
Condenser ( →P. 525)
Radiator ( →P. 525)1
2
3
4
5
6
7
8
9
10

5217-3. Do-it-yourself maintenance
7
Maintenance and care
HIGHLANDER_U (OM0E017U)
With the engine at operating temperature and turned off, check the oil
level on the dipstick.
■Checking the engine oilPark 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
Wipe the dipstick and reinsert it fully.
Engine oil
1
2
2.7 L 4-cylinder (1AR-FE)
engine3.5 L V6 (2GR-FKS) engine
3
4
5
1
2
3
6

5227-3. Do-it-yourself maintenance
HIGHLANDER_U (OM0E017U)■
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, c hecking 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
2.7 L 4-cylinder (1AR-FE)
engine3.5 L V6 (2GR-FKS) engine
Engine oil selection →P. 654
Oil quantity
(Low → Full)
2.7 L 4-cylinder (1AR-FE) engine
1.6 qt. (1.5 L, 1.3 Imp. qt.)
3.5 L V6 (2GR-FKS) engine
1.9 qt. (1.8 L, 1.6 Imp. qt.)
Items Clean funnel
1
2
3

5237-3. Do-it-yourself maintenance
7
Maintenance and care
HIGHLANDER_U (OM0E017U)■
If the oil is spilled on the engine cover (vehicles with 3.5 L V6 [2GR-FKS]
engine)
To prevent the engine cover from being damaged, remove any engine oil
from the engine cover as soon as possible using a neutral detergent. Do not
use an organic solvent such as brake cleaner.
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.