Coolant: Service and Repair

1AR-FE COOLING: COOLANT: REPLACEMENT

1. REMOVE NO. 1 ENGINE UNDER COVER

2. DRAIN ENGINE COOLANT

(a) Loosen the radiator drain cock plug.

NOTICE:
Do not loosen the radiator drain cock plug while the engine and radiator are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.

HINT
Collect the coolant in a container and dispose of it according to the regulations in your area.

(b) Remove the radiator cap sub-assembly from the radiator assembly.





3. ADD ENGINE COOLANT

(a) Tighten the radiator drain cock plug by hand.

(b) Loosen the air drain plug at the top of the radiator 3 or 4 turns.





(c) Add TOYOTA Super Long Life Coolant (SLLC) to the radiator inlet opening until coolant overflows from the radiator air drain hole. Then close the air drain plug at the top of the radiator.

Torque : 1.5 Nm (15 kgf-cm, 13 in-lbf) for air drain plug

HINT
If the coolant level at the radiator inlet opening drops after squeezing the No. 1 and No. 2 radiator hoses, add coolant.

(d) Slowly fill the radiator with TOYOTA Super Long Life Coolant (SLLC).

Standard capacity:

w/o Towing Package





w/ Towing Package





HINT
* TOYOTA vehicles are filled with TOYOTA SLLC at the factory. In order to avoid damage to the engine cooling system and other technical problems, only use TOYOTA SLLC or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, non-borate coolant with long-life hybrid organic acid technology (coolant with long-life hybrid organic acid technology is a combination of low phosphates and organic acids).
* Contact your TOYOTA dealer for further details.

NOTICE:
Never use water as a substitute for engine coolant.

(e) Slowly pour coolant into the radiator reservoir tank until it reaches the FULL line.





(f) Squeeze the No. 1 and No. 2 radiator hoses several times by hand, and then check the level of the coolant.

If the coolant level is low, add coolant.

(g) Bleed air from the cooling system.

(1) Warm up the engine until the thermostat opens. While the thermostat is open, circulate the coolant for several minutes.

HINT
The thermostat open timing can be confirmed by squeezing the No. 1 radiator hose by hand, and checking when the engine coolant starts to flow inside the hose.

(2) Maintain the engine speed at 2500 to 3000 rpm.

(3) Squeeze the No. 1 and No. 2 radiator hoses several times by hand to bleed air.

CAUTION:
When squeezing the radiator hoses:

* Avoid contact with the cooling fan motor insulator.
* Wear protective gloves.
* Be careful as the radiator hoses are hot.
* Keep your hands away from the radiator fan.
NOTICE:
* Make sure that the radiator reservoir still has some coolant in it.
* If the coolant temperature gauge indicates an excessive temperature, turn off the engine and let it cool.
* If there is not enough coolant, the engine may overheat or be seriously damaged.
* If the radiator reservoir does not have enough coolant, perform the following: 1) stop the engine, 2) wait until the coolant has cooled down, and 3) add coolant until the reservoir is filled to the FULL line.

(h) Stop the engine and wait until the engine coolant cools down.

(i) Add engine coolant to the FULL line on the radiator reservoir.

4. INSPECT FOR COOLANT LEAK Testing and Inspection

5. INSTALL NO. 1 ENGINE UNDER COVER