2017 Lexus IS200t cooling

5037-3. Do-it-yourself maintenance
7
Maintenance and care
IS200t_EE(OM53D77E)
■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. 622)
■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. 622)
■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 any reliable repairer.
■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 retailer or Lexus authorized repairer,
or any reliable repairer, test the cap an d check for leaks in the cooling system.
Coolant
1
2
3
1
2
3

5047-3. Do-it-yourself maintenance
IS200t_EE(OM53D77E)
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 retailer or Lexus autho-
rized repairer, or any reliable repairer.
WARNING
■When the engine is hot
Do not remove the engine coolant reservoir cap or intercooler coolant reservoir cap.
(  P. 622)
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
WARNING
■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.

6218-2. Steps to take in an emergency
8
When trouble arises
IS200t_EE(OM53D77E)
WARNING
■Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable gas
that may be emitted from the battery:
●Make sure each jumper cable is connected to the correct terminal and that it is not
unintentionally in contact with any other than the intended terminal.
●Do not allow the other end of the jumper cable connected to the “+” terminal to come
into contact with any other parts or metal surfaces in the area, such as brackets or
unpainted metal.
●Do not allow the + and - clamps of the jumper cables to come into contact with each
other.
●Do not smoke, use matches, cigarette lighters or allow open flame near the battery.
■Battery precautions
The battery contains poisonous and corrosive acidic electrolyte, while related parts
contain lead and lead compounds. Observe the following precautions when handling
the battery:
●When working with the battery, always wear safety glasses and take care not to allow
any battery fluids (acid) to come into contact with skin, clothing or the vehicle body.
●Do not lean over the battery.
●In the event that battery fluid comes into contact with the skin or eyes, immediately
wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention can be
received.
●Always wash your hands after handling the battery support, terminals, and other bat-
tery-related parts.
●Do not allow children near the battery.
NOTICE
■When handling jumper cables
When connecting the jumper cables, ensure that they do not become entangled in the
cooling fans or engine drive belt.

6228-2. Steps to take in an emergency
IS200t_EE(OM53D77E)
●The needle of the engine coolant temperature gauge (P. 93) enters the red
zone or a loss of engine power is experienced. (For example, the vehicle
speed does not increase.)
●“Engine Coolant Temp High Stop in a Safe Place See Owner’s Manual” is
shown on the multi-information display.
●Steam comes out from under the hood.
Stop the vehicle in a safe place and turn 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 any authorized
Lexus retailer or Lexus authorized
repairer, or any reliable repairer.
If your vehicle overheats
The following may indicate that your vehicle is overheating.
Correction procedures
1
2
3
1
2

6248-2. Steps to take in an emergency
IS200t_EE(OM53D77E)
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 operating by checking the fan sound and air flow.
If it is difficult to check these, 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 any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer.
If the fans are operating:
Have the vehicle inspected at the nearest authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.
Check if “Engine Coolant Temp High Stop in a Safe Place See Owner’s Man-
ual” is shown on the multi-information display.
If the message does not disappear:
Stop the engine and contact any author ized Lexus retailer or Lexus autho-
rized repairer, or any reliable repairer.
If the message is not displayed:
Have the vehicle inspected at the nearest authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.
6
7
8

6258-2. Steps to take in an emergency
8
When trouble arises
IS200t_EE(OM53D77E)
WARNING
■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 cool ed 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.

635
9
9-1. Specifications
Vehicle specifications
IS200t_EE(OM53D77E)
*1: Vehicles without a Stop & Start system
*2: Vehicles with a Stop & Start system
Cooling system
Capacity
Engine
7.8 L (8.2 qt., 6.9 Imp. qt.)
*1
7.9 L (8.3 qt., 7.0 Imp. qt.)*2
Intercooler
3.0 L (3.2 qt., 2.6 Imp. qt.)
Coolant type
Use either of the following: • “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-silicate, non- amine, non-nitrite, and non-borate coolant with long-life hybrid
organic acid technology
Do not use plain water alone.
Ignition system (Spark plug)
Make NGK DILFR7K9G
Gap0.9 mm (0.035 in.)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

658Alphabetical index
IS200t_EE(OM53D77E)
Card key.....................................................122
Care ............................................... 486, 490Aluminum wheels .............................. 487
Exterior................................................... 486
Interior .................................................... 490
Seat belts..................................................491
Cargo hooks ........................................... 472
CD player ............................................... 380
Chains ....................................................... 347
Child restraint system ............................ 57 Baby seats, definition ..........................58
Baby seats, installation ....................... 66
Child seats, definition..........................58
Child seats, installation....................... 66
Installing CRS with ISOFIX
rigid anchors........................................ 69
Installing CRS with seat belts.......... 66
Installing CRS with top strap .......... 70
Junior seats, definition ........................58
Junior seats, installation .....................68
Child safety................................................. 56
Airbag precautions .............................. 43
Battery precautions ............... 507, 621
Child restraint system......................... 57
How your child should wear the seat belt .............................. 38
Installing child restraints .................... 65 Moon roof precautions .................... 184
Power window lock switch .............177
Power window precautions.......... 180
Rear door child-protectors ............ 132
Removed electronic key
battery precautions....................... 529
Seat belt precautions.......................... 40
Seat heater precautions ................. 463
Trunk precautions .............................. 139
Child-protectors ....................................132
Cleaning....................................... 486, 490 Aluminum wheels.............................. 487
Exterior ................................................... 486
Interior..................................................... 490
Seat belts ................................................. 491
Clock ......................................................... 475
Coat hooks.............................................. 479
Condenser ............................................. 504
Console box ........................................... 469
Cooling system ..................................... 503
Engine overheating ...........................622
Cruise control
Cruise control ..................................... 286
Dynamic radar cruise control ......274
Cup holders ............................................ 470
Current fuel consumption ........... 116, 117
Curtain shield airbags ............................ 41
Customizable features....................... 642
C