2015 Lexus IS200t radiator cap

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
2
3
4
5
6
7
8
9
10
11
12

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
1
2
3
1
2
3

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.

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.

603Alphabetical index
IS200t_EE(OM53D19E)
Radar cruise control (dynamic radar cruise control) ........................ 244
Radiator .................................................... 446
Radio ......................................................... 338
Rear Crossing Traffic Alert .............. 299
Rear fog light ............................................217 Replacing light bulb......................... 485
Switch ........................................................ 217
Rear passengers’ seat belt
reminder lights....................................502
Rear seat......................................................151
Fold down the seatback .................... 151
Luggage security system................ 130
Rear personal lights .............................. 412 Wattage.................................................. 573
Rear sunshade ....................................... 423 Operation.............................................. 423
Reverse operation feature ............ 423
Rear turn signal lights.......................... 207
Replacing light bulbs........................ 478
Turn signal lever ................................. 207
Wattage.................................................. 573
Rear view mirror
Inside rear view mirror......................163
Outside rear view mirrors.............. 165 Rear view monitor system ................ 273
Rear window defogger ..................... 404
Refueling ...................................................227
Capacity................................................. 566
Fuel types .............................................. 566
If the fuel filler door cannot
be opened ..........................................229
Opening the fuel tank cap.............229
Remote Touch
*
Replacing Electronic key battery ..................... 466
Fuses ........................................................ 469
Light bulbs .............................................473
Tires...........................................................522
Rev indicator ........................................... 104
Rev peak ................................................... 104
R
*: For vehicles with a navigation or multimedia system, refer to
“NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.