2015 Lexus IS200t coolant reservoir

4387-3. Do-it-yourself maintenance
IS200t_EE(OM53D19E)
CAUTION
The engine compartment contains many mechanisms 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
●Keep hands, clothing and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, 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 or the battery. Fuel and
battery fumes are flammable.
●Be extremely cautious when working on the battery. It contains poisonous and corro-
sive sulfuric acid.
●Take care because brake fluid can harm your hands or eyes and damage painted sur-
faces. If fluid gets on your hands or in your eyes, flush the affected area with clean
water immediately.
If you still experience discomfort, consult a doctor.
■When working near the electric cooling fans or radiator grille
Be sure the engine switch is off.
With the engine switch in IGNITION ON mode, the electric cooling fans may auto-
matically start to run if the air conditioning is on and/or the coolant temperature is high.
( → P. 446)
■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.
■If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads wear or when
the fluid level in the accumulator is high.
If the reservoir needs frequent refilling, it may indicate a serious problem.

4417-3. Do-it-yourself maintenance
7
Maintenance and care
IS200t_EE(OM53D19E)For right-hand drive vehicles:
The battery and the fuse box in front of the battery are located on the opposite side of the
engine compartment.
Engine compartment
Fuse boxes (
→P. 4 6 9 )
Battery ( →P. 4 4 7 )
Intercooler
Engine oil level dipstick (→ P. 4 4 2 )
Engine oil filler cap ( →P. 443)
Engine coolant reservoir (→ P. 4 4 5 ) Wa s h e r f l u i d t a n k (
→P. 4 5 0 )
Electric cooling fans
Condenser ( →P. 4 4 6 )
Intercooler radiator ( →P. 4 4 6 )
Radiator ( →P. 4 4 6 )
Intercooler coolant reservoir (→ P. 4 4 5 )1
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4457-3. Do-it-yourself maintenance
7
Maintenance and care
IS200t_EE(OM53D19E)
■Engine coolant reservoir
The coolant level is satisfactory if it is between the “FULL” and “LOW” lines on
the reservoir when the engine 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. 557)
■Intercooler coolant reservoir
The coolant level is satisfactory if it is between the “F” and “L” lines on the res-
ervoir when the engine 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. 5 5 7 )
■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 dealer or repairer, or
another duly qualified and equipped professional.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir cap, drain cock and water
pump.
If you cannot find a leak, have any authorized Lexus dealer or repairer, or another duly
qualified and equipped professional, test the cap and check for leaks in the cooling sys-
tem.
Coolant
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4467-3. Do-it-yourself maintenance
IS200t_EE(OM53D19E)
Check the radiator, condenser and intercooler radiator and clear away any for-
eign objects.
If any of the above parts are extremely dirty or you are not sure of their condition,
have your vehicle inspected by any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
CAUTION
■When the engine is hot
Do not remove the engine coolant reservoir cap or intercooler coolant reservoir cap.
(→ P. 557)
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, condenser an d intercooler radiator
CAUTION
■When the engine is hot
Do not touch the radiator, condenser or intercooler radiator as they may be hot and
cause serious injuries, such as burns.

5588-2. Steps to take in an emergency
IS200t_EE(OM53D19E)
Engine coolant reservoir:
The coolant level is satisfactory if it is between the “FULL” and “LOW” lines on
the reservoir.Reservoir cap
“FULL” line
“LOW” line
Intercooler coolant reservoir:
The coolant level is satisfactory if it is between the “F” and “L” lines on the res-
ervoir. Reservoir cap
“F” line
“L” line
Add coolant if necessary.
Water can be used in an emergency if coolant is unavailable.
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XEngineXIntercooler

5608-2. Steps to take in an emergency
IS200t_EE(OM53D19E)
CAUTION
■When inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
●If steam is seen coming from under the hood, do not open the hood until the steam
has subsided. The engine compartment may be very hot.
●Keep hands and clothing (especially a tie, a scarf or a muffler) away from the fans and
belts. Failure to do so may cause the hands or clothing to be caught, resulting in seri-
ous injury.
NOTICE
■When adding engine coolant
Add coolant slowly after the engine has cooled down sufficiently. Adding cool coolant
to a hot engine too quickly can cause damage to the engine.
■To prevent damage to the cooling system
Observe the following precautions:
●Avoid contaminating the coolant with foreign matter (such as sand or dust etc.).
●Do not use any coolant additive.
●Do not loosen the coolant reservoir cap or
intercooler cap while the engine and radiator
are hot.
High temperature steam or coolant could
spray out.