2016 Lexus ES300h engine

437
ES300h_OM_OM33B71U_(U)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 “Warranty and Service Guide” or “Owner’s
Manual Supplement”. It is recommende
d that any problem you notice should
be brought to the attention of your Lexu s dealer or qualified service shop for
advice.
Engine compartment
ItemsCheck points
Brake fluidIs the brake fluid at the correct level? ( P. 4 5 3 )
Engine/power control unit
coolantIs the engine/power control unit coolant at the correct
level? ( P. 4 5 1 )
Engine oilIs the engine oil at the correct level? ( P. 4 4 7 )
Exhaust systemThere should not be any fumes or strange sounds.
Radiator/condenserThe radiator and condenser should be free from for-
eign objects. ( P. 4 5 2 )
Wa s h e r f l u i dIs there sufficient washer fluid? ( P. 4 5 4 )
Trunk
ItemsCheck points
12-volt batteryCheck the connections. ( P. 4 5 5 )

ES300h_OM_OM33B71U_(U)
4397-2. Maintenance
7
Maintenance and care
Vehicle exterior
ItemsCheck points
Doors/trunk• Do the doors/trunk 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.
Ti r e s
• Is the tire inflation pressure correct?
• The tires should not be damaged or excessively worn.
• Have the tires been rotated according to the mainte- nance schedule?
• The wheel nuts should not be loose.
Windshield wipers
• The wiper blades should no t show any signs of crack-
ing, splitting, wear, contamination or deformation.
• The wiper blades should clear the windshield without
streaking or skipping.
WA R N I N G
■If the hybrid system is operating
Turn the hybrid system off and ensure that there is adequate ventilation before per-
forming maintenance checks.

441
ES300h_OM_OM33B71U_(U)7-3. Do-it-yourself maintenance
7
Maintenance and care
Do-it-yourself service precautions
If you perform maintenance by yourself, be sure to follow the correct proce-
dure as given in these sections.
ItemsPa r t s a n d t o o l s
12-volt battery con-
dition (
P. 4 5 5 )•Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
( P. 4 5 3 )
• FMVSS No.116 DOT 3 or SAE J1703 brake fluid
•Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine/power con-
trol unit coolant level
( P. 4 5 1 )
• “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 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 coolant)
Engine oil level
( P. 4 4 7 )
• “Toyota Genuine Motor Oil” or equivalent
•Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses ( P. 477)• Fuse with same amperage rating as original
Light bulbs
( P. 4 8 0 )
• Bulb with same number and wattage rating as original
• Phillips-head screwdriver
•Flathead screwdriver•Wrench
Radiator and con-
denser ( P. 4 5 2 )
Tire inflation pres-
sure (P. 4 6 8 )•Tire pressure gauge
• Compressed air source
Wa s h e r f l u i d
( P. 4 5 4 )• Water or washer fluid containi ng antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)

442
ES300h_OM_OM33B71U_(U)7-3. Do-it-yourself maintenance
WA R N I N G
The engine compartment contains many components 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
●Make sure that the indicator on the power switch and the “READY” indicator are
both off.
●Keep hands, clothing and tools away from
the moving fan and engine drive belt.
●Be careful not to touch the engine, power control unit, 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. Fuel fumes are flamma-
ble.
■When working near the electric cooling fans or radiator grille
Be sure the power switch is off.
With the power switch in ON mode, the electric cooling fans may automatically start to
run if the air conditioning is on and/or the coolant temperature is high. ( P. 4 5 2 )
■Safety glasses
Wear safety glasses to prevent flying or fallin g 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.

445
ES300h_OM_OM33B71U_(U)7-3. Do-it-yourself maintenance
7
Maintenance and care
Engine compartment
■12-volt battery

P. 4 5 5
Wa s h e r f l u i d t a n k ( P. 4 5 4 )
Fuse boxes ( P. 4 7 7 )
Power control unit coolant
reservoir ( P. 4 5 1 )
Engine oil level dipstick (P. 4 4 7 )
Engine oil filler cap ( P. 4 4 8 )Engine coolant reservoir
(P. 4 5 1 )
Brake fluid reservoir ( P. 4 5 3 )
Power control unit coolant
radiator ( P. 4 5 2 )
Electric cooling fans
Condenser ( P. 4 5 2 )
Engine coolant radiator (P. 4 5 2 )1
2
3
4
5
6
7
8
9
10
11

446
ES300h_OM_OM33B71U_(U)7-3. Do-it-yourself maintenance
■Removing the engine compartment cover
■Installing the clips
Push up center portion
Insert
Press
Engine compartment cover
1
2
3
NOTICE
■Checking the engine compartment cover after installation
Make sure that the cover is securely installed in its original position.

ES300h_OM_OM33B71U_(U)
4477-3. Do-it-yourself maintenance
7
Maintenance and care
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 of f the hybrid system, 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
1
2
3
Flat dipstickNon-flat dipstick
6

448
ES300h_OM_OM33B71U_(U)7-3. Do-it-yourself maintenance
■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 selection P. 5 3 8
Oil quantity (Low  Full) 1.6 qt. (1.5 L, 1.3 Imp.qt.)
Items Clean funnel
1
2
3