oil LEXUS RX450h 2015 User Guide

6364-1. Maintenance and care
NOTICE■
To prevent paint deterioration and corros ion on the body and components (alu-
minum wheels etc.) ●
Wash the vehicle immediately in the following cases:
• After driving near the sea coast
• After driving on salted roads
• If you see coal tar or tree sap on the paint surface
• If you see dead in sects, insect droppings or bird droppings on the paint
• After driving in an area contaminated with soot, oily smoke, mine dust, iron
powder or chemical substances
• If the vehicle becomes heavily soiled in dust or mud
• If liquids such as benzene and gasoline are spilled on the paint surface●
If the paint is chipped or scratched, have it repaired immediately.●
To prevent the wheels from corroding, remove any dirt and store in a place with
low humidity when storing the wheels.■
Cleaning the exterior lights ●
Wash carefully. Do not use organic substances or scrub with a hard brush.
This may damage the surfaces of the lights.●
Do not apply wax to the surfaces of the lights.
Wax may cause damage to the lenses.■
To prevent damage to the windshield wiper arms
When lifting the wiper arms away from th e windshield, pull the driver side wiper
arm upward first, and repeat for the passenger side. When returning the wipers to
their original position, do so from the passenger side first.■
When using an automatic car wash (vehicle s with rain-sensing windshield wipers)
Set the wiper switch to the off position.
If the wiper switch is in , the wipers may operate and the wiper blades may
be damaged.

6424-2. Maintenance
CAUTION■
If your vehicle is not properly maintained
Improper maintenance could result in se rious damage to the vehicle and possible
serious injury or death.■
Handling of the 12-volt battery ●
Engine exhaust, some of its constituents, and a wide variety of automobile com-
ponents contain or emit chemicals known to the State of California to cause can-
cer 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 compo-
nent 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.●
12-volt battery posts, terminals and related accessories contain lead and lead
compounds which are known to cause brain damage. Wash your hands after
handling. (  P. 6 6 4 )

6434-2. Maintenance
4
Maintenance and care General maintenance
Engine compartment Items Check points
Brake fluid Is the brake fluid at the correct level?
(  P. 6 6 2 )
Coolant Is the coolant at the correct level?
(  P. 6 5 9 )
Engine oil Is the engine oil at the correct level?
(  P. 6 5 6 )
Exhaust system There should not be any fumes or
strange sounds.
Radiator/condenser/hoses The radiator and condenser should
be free from foreign objects.
(  P. 6 6 1 )
Wa s h e r f l u i d Is there sufficient washer fluid?
(  P. 663)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 recomme nded that any problem you notice
should be brought to the attention of your Lexus dealer or qualified service
shop for advice.

6494-3. Do-it-yourself maintenance
4
Maintenance and care Items Pa r t s a n d t o o l s
Engine oil level (  P. 6 5 6 ) • “Toyota Genuine Motor Oil” or
equivalent
•Rag or paper towel
• Funnel (used only for adding
engine oil)
Fuses (  P. 6 8 9 ) • Fuse with same amperage rating as
original
Tire inflation pressure (  P. 6 7 9 ) • Tire pressure gauge
• Compressed air source
Headlight aim (  P. 7 0 5 ) • Phillips-head screwdriver
Radiator and condenser (  P. 6 6 1 )

Wa s h e r f l u i d (  P. 663) • Water or washer fluid containing
antifreeze (for winter use)
• Funnel (used only for adding water
or washer fluid)

6504-3. Do-it-yourself maintenance
CAUTIONThe engine compartment contains many mechanisms and fluids that may move sud-
denly, 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 fans 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 easi ly, such as paper and rags, in the engine
compartment.●
Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes are flam-
mable■
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 automati-
cally start to run if the air conditioning is on and/or the coolant temperature is high.
(  P. 6 6 1 )■
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.

6544-3. Do-it-yourself maintenance
Engine compartment
Brake fluid reservoir
(  P. 6 6 2 )
Engine oil filler cap
(  P. 6 5 7 )
Engine oil level dipstick
(  P. 6 5 6 )
Power control unit coolant
reservoir (  P. 6 5 9 )
Fuse boxes (  P. 6 8 9 ) Engine coolant reservoir
(  P. 6 5 9 )
Condenser (  P. 6 6 1 )
Radiator (  P. 6 6 1 )
Electric cooling fans
Power control unit coolant
radiator (  P. 6 6 1 )
Washer fluid tank (  P. 663)

6564-3. Do-it-yourself maintenance
Engine oil
With the engine at operating temperat ure and turned off, check the oil
level on the dipstick.
■ Checking the engine oil
Park the vehicle on level grou nd. 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.NOTICE■
After installing an engine compartment cover
Make sure that the cover is securely installed in its original position.
STEP 1
STEP 2
STEP 3
STEP 4

6574-3. Do-it-yourself maintenance
4
Maintenance and care Holding a rag under the end, pull the dipsti ck out and check the
oil level.
Low
Normal
Excessive
The shape of the dipstick may dif-
fer depending on the type of vehi-
cle or engine.
Wipe the dipstick and reinsert it fully.
■ Adding engine oil
If the oil level is below or near the
low level mark, add engine oil of
the same type as th at already in the
engine.
Make sure to check th e 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.STEP 5
STEP 6
Engine oil
selection  P. 8 0 2
Oil quantity
(Low  Full) 1.6 qt. (1.5 L, 1.3 Imp. qt.)
Items Clean funnel
STEP 1
STEP 2
STEP 3

6584-3. Do-it-yourself maintenance
■
Engine oil consumption
A certain amount of engine oil will be consumed while driving. In the following situ-
ations, oil consumption may increase, and engine oil may need to be refilled in
between oil maintenance intervals. ●
When the engine is new, for example di rectly after purchasing the vehicle or
after replacing the engine●
If low quality oil or oil of an inappropriate viscosity is used●
AWD models with towing package: When driving at high engine speeds or with
a heavy load, when towing, or when driving while accelerating or decelerating
frequently●
2WD models and AWD models without towing package: When driving at high
engine speeds or with a heavy load, or when driving while accelerating or
decelerating frequently●
When leaving the engine id ling for a long time, or when driving frequently
through heavy traffic
CAUTION■
Used engine oil ●
Used engine oil contains potentially harmful contaminants which may cause skin
disorders such as inflammati on or 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 dis-
pose of used oil and filters in househol d trash, in sewers or onto the ground.
Call your Lexus dealer, service station or auto parts store for information con-
cerning recycling or disposal.
●
Do not leave used engine oil within the reach of children.

6594-3. Do-it-yourself maintenance
4
Maintenance and care
Coolant
The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine and hybrid system are cold.
Engine 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. 788)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.