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4-3. Do-it-yourself maintenance
IS250C/350C_U
Engine compartment
IS350C
Battery (→P. 4 2 7 )
Engine oil level dipstick (→P. 4 2 0 )
Engine oil filler cap (→P. 4 2 0 )
Brake fluid reservoir (→P. 425)
Fuse boxes ( →P. 4 5 1 )Washer fluid tank
(→P. 4 3 0 )
Electric cooling fans
Condenser ( →P. 425)
Radiator ( →P. 425)
Engine coolant reservoir (→P. 423)
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4-3. Do-it-yourself maintenance
4
Maintenance and care
IS250C/350C_U
IS250C
Battery (→P. 4 2 7 )
Engine oil level dipstick (→P. 4 2 0 )
Engine oil filler cap (→P. 4 2 0 )
Brake fluid reservoir (→P. 425)
Fuse boxes ( →P. 4 5 1 )Washer fluid tank
(→P. 4 3 0 )
Electric cooling fans
Condenser ( →P. 425)
Radiator ( →P. 425)
Engine coolant reservoir (→P. 423)
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4-3. Do-it-yourself maintenance
IS250C/350C_U
Engine compartment cover■ Removing the engine compartment cover
Front
Outside
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4-3. Do-it-yourself maintenance
4
Maintenance and care
IS250C/350C_U■
Installing the clips
Press the tip of the clip against a
hard surface, such as a desk, to
allow the center part of the clip
to be pushed up.
Insert
Press
NOTICE
■After installing an engine compartment cover
Make sure that the cover is securely installed in its original position.
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4-3. Do-it-yourself maintenance
IS250C/350C_U
Engine oilWith 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 five minutes for the oil to drain
back into the bottom of the engine.
Hold a rag under the end and 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 dif-
fer depending on the type of vehi-
cle or engine.
Wipe the dipstick and reinsert it fully.
STEP1
STEP2
STEP3
STEP4
STEP5
STEP6
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4-3. Do-it-yourself maintenance
4
Maintenance and care
IS250C/350C_U■
Adding engine oil
If the oil level is below or near the
low level mark, add engine oil of
the same type as 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 5 6
Oil quantity
(Low → Full)1.6 qt. (1.5 L, 1.3 Imp. qt.)
ItemsClean funnel
STEP1
STEP2
STEP3
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4-3. Do-it-yourself maintenance
IS250C/350C_U
■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 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, or when driving while
accelerating or decelerating frequently
●When leaving the engine idling 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 inflammation 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 household 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.
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4-3. Do-it-yourself maintenance
4
Maintenance and care
IS250C/350C_U
Engine coolantThe coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine is cold. Reser voir cap
“FULL”
“LOW”
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line.
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.