2011 Lexus IS200d radiator cap

405
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS250/220d/200d_EE
Engine compartment
IS250
*: For right-hand drive vehicles:
They are located on the opposite side of the engine compartment.
Battery (P. 415)
Engine oil level dipstick
(P. 409)
Engine oil filler cap
(P. 410)
Fuse boxes (P. 438)
Washer fluid tank(P. 420)Electric cooling fans
Condenser (P. 415)
Radiator (P. 415)
Engine coolant reservoir
(P. 413)
*
*

406
4-3. Do-it-yourself maintenance
IS250/220d/200d_EE
IS220d and IS200d
*: For right-hand drive vehicles:
They are located on the opposite side of the engine compartment.
Battery (P. 415)
Engine oil level dipstick
(P. 409)
Engine oil filler cap
(P. 410)
Fuse boxes (P. 438)
Washer fluid tank(P. 420)Electric cooling fans
Condenser (P. 415)
Intercooler (P. 415)
Radiator (P. 415)
Engine coolant reservoir
(P. 413)
*
*

414
4-3. Do-it-yourself maintenance
IS250/220d/200d_EE
If the coolant level drops within a short time after replenishing
Visually check the radiator, hoses, engine coolant filler cap, radiator 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 system.
Coolant selection
Only use “Toyota Super Long Life Coolant” or similar high-quality eth-
ylene 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 mixture of 50% coolant and 50%
deionized water. (Enabled: -35C [-31F])
For more details about engine coolant, contact any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional.
CAUTION
When the engine is hot
Do not remove the radiator cap (IS250), or the coolant reservoir cap (IS220d
and IS200d).
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 engine 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 cooling. Be sure to read the antifreeze or coolant label.
If you spill coolant
Be sure to wash it off with water to prevent damage to parts or paint.

5
529
5-2. Steps to take in an emergency
When trouble arises
IS250/220d/200d_EE
Overheating
If you observe the following, your vehicle may be overheating.
The engine coolant temperature gauge enters the red zone or a loss of
power is experienced.
Steam is coming from under the hood.
CAUTION
To prevent an accident or injury when inspecting under the hood of your
vehicle
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, caus-
ing serious injury such as burns.
Keep hands and clothing away from the fans and other belts while the
engine is running.
Do not loosen the radiator cap (IS250), or the coolant reservoir cap
(IS220d and IS200d) while the engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.
Add engine coolant if neces-
sary.
Water can be used in an
emergency if engine coolant
is unavailable.
(P. 5 4 4)
Have the vehicle checked at the nearest authorized Lexus dealer
or repairer, or another duly qualified and equipped professional,
as soon as possible.
STEP5