2017 Lexus IS300h maintenance

5157-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53D89E)
■12-volt battery
 P. 522
Engine compartment
Power control unit coolant reser-
voir ( P. 519)
Engine oil level dipstick
( P. 516)
Engine coolant reservoir
( P. 519)
Engine oil filler cap
( P. 517)
Fuse box ( P. 552)
Washer fluid tank ( P. 521)
Electric cooling fans
Condenser ( P. 521)
Power control unit coolant
radiator ( P. 521)
Engine coolant radiator
( P. 521)
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5167-3. Do-it-yourself maintenance
IS300h_EE(OM53D89E)
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. Afte r 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 dif-
fer depending on the type of vehi-
cle or engine.
Wipe the dipstick and reinsert it fully.
Engine oil
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5177-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53D89E)
■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 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
Engine oil selection P. 647
Oil quantity (Low  Full) 1.5 L (1.6 qt., 1.3 Imp. qt.)
Items Clean funnel
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5187-3. Do-it-yourself maintenance
IS300h_EE(OM53D89E)
■After changing the engine oil
The engine oil maintenance data should be reset. Perform the following procedures:
Select on the multi- information display. (P. 119)
Press the or meter control switch on the steering wheel to select “Vehicle
Settings” then “Oil Maintenance” . (To confirm setting, press .)
Select “Yes” and then press .
A message is displa yed on the multi-information display.
WARNING
■Used engine oil
●Used engine oil contains potentially harmful contaminants which may cause skin dis-
orders such as inflammation and skin cance r, 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 filters only in a sa fe and acceptable manner. Do not dispose of used oil and filters in household tras h, in sewers or onto the ground.
Call any authorized Lexus re tailer or Lexus authorized repairer, or any reliable
repairer, service station or auto parts st ore 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.
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5197-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53D89E)
■Engine coolant reservoir
The coolant level is satisfactory if it is between the “FULL” and “LOW” lines on
the reservoir when the hybrid system is cold.
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW” line, add coolant up to the “FULL”
line. ( P. 636)
■Power control unit coolant reservoir
The coolant level is satisfactory if it is between the “F” and “L” lines on the reser-
voir when the hybrid system is cold.
Reservoir cap
“F” line
“L” line
If the level is on or below the “L” line, add coolant up to the “F” line.
( P. 636)
Coolant
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5207-3. Do-it-yourself maintenance
IS300h_EE(OM53D89E)
■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.
“Toyota Super Long Life Coolant” is a mixt ure of 50% coolant and 50% deionized water.
(Minimum temperature: -35 C [-31F])
For more details about coolant, contact any authorized Lexus retailer or Lexus autho-
rized repairer, or an y reliable repairer.
■If the coolant level drops within a short time of replenishing
Visually check the radiators, hoses, engine /power control unit coolant reservoir caps,
drain cock and water pump.
If you cannot find a leak, have any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer, test the cap an d check for leaks in the cooling system.
WARNING
■When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir caps or water filler cap. ( P. 636)
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.

5217-3. Do-it-yourself maintenance
7
Maintenance and care
IS300h_EE(OM53D89E)
Check the radiators 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 any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.
If any washer does not work or the
warning message appears on the multi-
information display, the washer tank
may be empty. Add washer fluid.
Radiators and condenser
WARNING
■When the hybrid system is hot
Do not touch the radiators or condenser as they may be hot and cause serious injuries, such as burns.
Washer fluid
WARNING
■When adding washer fluid
Do not add washer fluid when the hybrid system is hot or operating as washer fluid
contains alcohol and may catch fire if spilled on the engine etc.
NOTICE
■Do not use any fluid other than washer fluid
Do not use soapy water or engine an tifreeze instead of washer fluid. Doing so may cause streaking on the vehicle’s painted surfaces.
■Diluting washer fluid
Dilute washer fluid with water as necessary. Refer to the freezing temperatures listed on the label of the washer fluid bottle.

5227-3. Do-it-yourself maintenance
IS300h_EE(OM53D89E)
The 12-volt battery is located on the
left-hand side of luggage compart-
ment.
Remove the 12-volt battery cover.
Make sure that the 12-volt battery terminals are not corroded and that there are
no loose connections, cracks, or loose clamps.
Terminals
Hold-down clamp
12-volt battery
Location
Removing the 12-volt battery cover
Exterior
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