Coolant: Service and Repair

2ZR-FE COOLING: COOLANT: REPLACEMENT

CAUTION:
Be sure that the ignition is off if you work near the electric cooling fans or radiator grille. With the ignition on, the electric cooling fans may automatically start if the engine coolant temperature is high or the air conditioning is on.

1. DRAIN ENGINE COOLANT

NOTICE:
To avoid the danger of being burned, do not remove the radiator cap sub-assembly while the engine and radiator assembly are still hot. Thermal expansion will cause hot engine coolant and steam to blow out from the radiator assembly.

(a) Loosen the radiator drain cock plug.

(b) Remove the radiator cap sub-assembly.

(c) Loosen the cylinder block drain cock plug, then drain the coolant.





2. ADD ENGINE COOLANT

(a) Tighten all the plugs.

(b) Pour engine coolant into the radiator assembly until it is completely full.

Capacity:

M/T 5.0 liters (5.3 US qts, 4.4 lmp. qts)

A/T 4.9 liters (5.2 US qts, 4.3 lmp. qts)

NOTICE:
Do not substitute water for engine coolant.

HINT
* Use of improper engine coolant may damage the engine coolant system.
* Use only Toyota Super Long Life Coolant or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, and non-borate engine coolant with long-life hybrid organic acid technology (coolant with long-life hybrid organic acid technology consists of a combination of low phosphates and organic acids).
(c) Check the engine coolant level inside the radiator assembly by squeezing the inlet and outlet radiator hoses several times by hand. If the engine coolant level goes down, add engine coolant.

(d) Install the radiator cap sub-assembly securely.

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

(f) 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 pressing the inlet 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) Press the inlet and outlet radiator hoses several times by hand to bleed air.

CAUTION:
When pressing the radiator hoses:

* Wear protective gloves.
* Be careful as the radiator hoses are hot.
* Keep your hands away from the radiator fan.
(g) Stop the engine and wait until the coolant cools down.

(h) If the engine coolant level is below the full level, perform steps (b) through (g) again and repeat the operation until the engine coolant level stays at the full level.

(i) Recheck the engine coolant level inside the radiator reservoir tank assembly. If it is below the full level, add engine coolant.

3. INSPECT FOR ENGINE COOLANT LEAK Testing and Inspection