2016 Lexus IS200t radiator

4247-3. Do-it-yourself maintenance
IS350/300/200t_U (OM53D18U)
IS200t
Fuse boxes ( P. 4 5 2 )
Battery ( P. 4 3 1 )
Intercooler
Engine oil level dipstick (P. 4 2 5 )
Engine oil filler cap ( P. 4 2 6 )
Engine coolant reservoir (P. 4 2 8 ) Brake fluid reservoir (
P. 4 3 0 )
Wa s h e r f l u i d t a n k ( P. 4 3 3 )
Electric cooling fans
Condenser ( P. 4 2 9 )
Intercooler radiator ( P. 4 2 8 )
Radiator ( P. 4 2 9 )
Intercooler coolant reservoir (P. 4 2 9 )1
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4297-3. Do-it-yourself maintenance
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Maintenance and care
IS350/300/200t_U (OM53D18U)Canada:
“Toyota Super Long Life Coolant” is a mixt
ure of 55% coolant and 45% deionized water.
(Minimum temperature: -44 F [-42 C])
For more details about engine 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, 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.
Check the radiator, condense r and intercooler radiator (if equipped) and clear
away any foreign objects.
If any of the above parts are extremely dirty or you are not sure of their condition,
have your vehicle inspected by your Lexus dealer.
CAUTION
■When the engine is hot
Do not remove the engine coolant reservoir cap, radiator cap (IS350/IS300) or inter-
cooler coolant reservoir cap (IS200t). ( P. 5 1 9 )
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 and intercooler radiator (if equipped)
CAUTION
■When the engine is hot
Do not touch the radiator, condenser or inte rcooler radiator (if equipped) as they may
be hot and cause serious injuries, such as burns.

5168-2. Steps to take in an emergency
IS350/300/200t_U (OM53D18U)
●The needle of the engine coolant temperature gauge (P. 81) enters the red
zone or a loss of engine power is experienced. (For example, the vehicle
speed does not increase.)
●“Engine Coolant High Temperature” is shown on the multi-information dis-
play.
●Steam comes out from under the hood.
Stop the vehicle in a safe place and tu rn off the air conditioning system, and
then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled down
sufficiently, inspect the hoses and
radiator core (radiator) for any
leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your Lexus
dealer.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
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5188-2. Steps to take in an emergency
IS350/300/200t_U (OM53D18U)
Add coolant if necessary.
Water can be used in an emergency if coolant is unavailable.
Start the engine and turn the air conditioning system on to check that the radi-
ator cooling fans operate and to check for coolant leaks from the radiator or
hoses.
The fans operate when the air conditioning system is turned on immediately after a
cold start. Confirm that the fans are oper ating by checking the fan sound and air flow.
If it is difficult to check th ese, turn the air conditioning system on and off repeatedly.
(The fans may not operate in freezing temperatures.)
If the fans are not operating:
Stop the engine immediately and contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
Check if “Engine Coolant High Temperat ure” is shown on the multi-informa-
tion display.
If the message does not disappear:
Stop the engine and contact your Lexus dealer.
If the message is not displayed:
Have the vehicle inspected at the nearest Lexus dealer.
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Engine (IS350/IS300)Engine (IS200t)
Intercooler (IS200t only)
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5198-2. Steps to take in an emergency
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When trouble arises
IS350/300/200t_U (OM53D18U)
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.
●IS350/IS300: Do not loosen the coolant res-
ervoir caps or radiator cap while the engine
and radiator are hot. (The radiator cap is
located under the engine cover.)
High temperature steam or coolant could
spray out.
●IS200t: Do not loosen the coolant reservoir
cap or intercooler reservoir cap while the
engine and radiator are hot.
High temperature steam or coolant could
spray out.

592Alphabetical index
IS350/300/200t_U (OM53D18U)
Radar cruise control (dynamic radar cruise control) ........................ 202
Radiator .................................................... 429
Radio..........................................................300
Rear personal lights............................. 379 Wattage ................................................. 536
Rear seats .................................................. 124 Fold down the seatback ...................124
Luggage security system .................. 112
Rear sunshade ....................................... 389 Operation ............................................. 389
Reverse operation feature............ 389
Rear turn signal lights ........................... 175 Replacing light bulbs ....................... 460
Turn signal lever .................................. 175
Wattage ................................................. 536
Rear view mirror Inside rear view mirror ..................... 136
Outside rear view mirrors .............. 138 Rear window defoggers ..................... 372
Refueling.................................................... 194
Capacity ................................................. 526
Fuel types............................................... 526
If the fuel filler door cannot be opened ...........................196
Opening the fuel tank cap ..............196
Remote Touch
*
Replacing Electronic key battery .....................450
Fuses ........................................................ 452
Light bulbs.............................................455
Tires .......................................................... 496
Reporting safety defects for U.S. owners .................................. 564
Reset the maintenance data .............. 413
Rev indicator ............................................. 89
Rev peak ..................................................... 89
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