2012 TOYOTA SIENNA radiator cap

655
4-3. Do-it-yourself maintenance
4
Maintenance and care
SIENNA_U (OM45477U)
Engine compar tment
1AR-FE engine
Washer fluid tank (P. 671)
Engine oil level dipstick ( P. 657)
Engine oil filler cap ( P. 659)
Engine coolant reservoir ( P. 662)Brake fluid reservoir
( P. 665)
Fuse box ( P. 696)
Battery ( P. 667)
Electric cooling fans
Condenser ( P. 664)
Radiator ( P. 664)

656 4-3. Do-it-yourself maintenance
SIENNA_U (OM45477U)
2GR-FE engine
Washer fluid tank (P. 671)
Engine oil filler cap ( P. 659)
Engine oil level dipstick ( P. 657)
Engine coolant reservoir ( P. 662)Brake fluid reservoir
( P. 665)
Fuse box ( P. 696)
Battery ( P. 667)
Electric cooling fans
Condenser ( P. 664)
Radiator ( P. 664)

662 4-3. Do-it-yourself maintenance
SIENNA_U (OM45477U)
Engine coolantThe coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine is cold.
Reservoir cap
“FULL”
“LOW”
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line.
■Coolant selection
Only use “Toyota Super Long Life Coolant” or similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant
with long-life hybrid organic acid technology.
U.S.A.: “Toyota Super Long Life Coolant” is a mixture of 50 % coolant and 50 % deionized water.
(Minimum temperature: -31 F [-35 C])
Canada: “Toyota Super Long Life Coolant” is a mixture of 55 % coolant and 45 % deionized water.
(Minimum temperature: -44 F [-42 C])
For more details about engine coolant, contact your Toyota dealer.
■ If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir caps drain cock
and water pump.
If you cannot find a leak, have your Toyota dealer test the cap and check for
leaks in the cooling system.

5
When trouble arises
777
5-2. Steps to take in an emergency
SIENNA_U (OM45477U)
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 injuries such as burns.
● Keep hands and clothing away from the fans and drive belt while the
engine is running.
● Do not loosen the coolant reservoir cap while the engine and radiator are
hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.
NOTICE
■When adding engine coolant
Wait until the engine has cooled down before adding engine coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot engine too
quickly can cause damage to the engine.