check engine Lexus ES300h 2017 User Guide

433
ES300h_OM_OM33C75U_(U)
7Maintenance and care
7-1. Maintenance and careCleaning and protecting the vehicle exterior................. 434
Cleaning and protecting the vehicle interior .................. 437
7-2. Maintenance Maintenance requirements.............................440
General maintenance .............. 443
Emission inspection and maintenance (I/M)
programs .................................... 446
7-3. Do-it-yourself maintenance Do-it-yourself service precautions................................ 447
Hood ............................................... 449
Positioning a floor jack ............. 450
Engine compartment .................451
12-volt battery................................461
Tires.................................................. 465
Tire inflation pressure ................ 474
Wheels ............................................477
Air conditioning filter ............... 479
Electronic key battery ............... 481
Checking and replacing fuses..............................................483
Light bulbs.....................................486

443
ES300h_OM_OM33C75U_(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 Lex us dealer or qualified service shop for
advice.
Engine compartment
ItemsCheck points
Brake fluidIs the brake fluid at the correct level? (→ P. 4 5 9 )
Engine/power control unit
coolantIs the engine/power control unit coolant at the correct
level? ( →P. 4 5 7 )
Engine oilIs the engine oil at the correct level? ( →P. 4 5 3 )
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 8 )
Wa s h e r f l u i dIs there sufficient washer fluid? (→ P. 4 6 0 )
Tr u n k
ItemsCheck points
12-volt batteryCheck the connections.(→ P. 4 6 1 )

ES300h_OM_OM33C75U_(U)
4457-2. 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 afterthe vehicle has been parked.
Ti r e s
• Is the tire inflation pressure correct?
• The tires should not be damaged or excessivelyworn.
• Have the tires been rotated according to the mainte- nance schedule?
• The wheel nuts should not be loose.
Windshield wipers
• The wiper blades should not 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.

452
ES300h_OM_OM33C75U_(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_OM33C75U_(U)
4537-3. 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 oilPark the vehicle on level ground.
After warming up the engine and turning off 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
XFlat dipstickXNon-flat dipstick
6

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ES300h_OM_OM33C75U_(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 4 4
Oil quantity (Low → Full) 1.6 qt. (1.5 L, 1.3 Imp.qt.)
Items Clean funnel
1
2
3

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ES300h_OM_OM33C75U_(U)7-3. Do-it-yourself maintenance
WA R N I N G
■Used engine oil
●Used engine oil contains potentially harm
ful contaminants which may cause skin dis-
orders such as inflammation and skin cancer, so care should be taken to avoid pro-
longed and repeated contact. To remove used engine oil from your skin, wash
thoroughly with soap and water.
●Dispose of used oil and filter s only in a safe and acceptable manner. Do not dispose of
used oil and filters in household tras h, in sewers or onto the ground.
Call your Lexus 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.

ES300h_OM_OM33C75U_(U)
4577-3. 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 hybrid system is cold.
■Engine coolant reservoirReservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW”
line, add coolant up to the “FULL”
line. ( →P. 5 3 3 )
■Power control unit coolant reservoir
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW”
line, add coolant up to the “FULL”
line. ( →P. 5 3 3 )
■Coolant selection
Only use “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.
U.S.A.:
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deionized water.
(Minimum temperature: -31 °F [-35 °C])
Canada:
“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deionized water.
(Minimum temperature: -44° F [-42°C])
For more details about coolant, contact your Lexus dealer.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir cap, power control unit cool-
ant reservoir cap, drain cock and water pump.
If you cannot find a leak, have your Lexus dealer test the cap and check for leaks in the
cooling system.
Coolant
1
2
3
1
2
3

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ES300h_OM_OM33C75U_(U)7-3. Do-it-yourself maintenance
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 condi-
tion, have your vehicle inspected by your Lexus dealer.
WA R N I N G
■When the hybrid system is hot
Do not remove the engine coolant reservoir cap, power control unit coolant reservoir
cap, or the radiator 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 cool-
ing. 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.
Radiator and condenser
WA R N I N G
■When the hybrid system is hot
Do not touch the radiator or condenser as they may be hot and cause serious injuries,
such as burns.

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ES300h_OM_OM33C75U_(U)7-3. Do-it-yourself maintenance
7
Maintenance and care
Checking and replacing fuses
Tu r n t h e p o w e r s w i t c h o f f .
Open the Fuse box cover.
If any of the electrical components do not operate, a fuse may have blown. If
this happens, check and replace the fuses as necessary.
1
2
XEngine compartment (right side)XEngine compartment (left side)
Push the tab in and lift the lid off. Push the tab in and lift the lid off.
XDriver’s side instrument panel
Remove the lid.