Coolant: Service and Repair

ENGINE COOLANT (1NZ-FE)(From April, 2004)
REPLACEMENT
1. DRAIN ENGINE COOLANT

CAUTION: To avoid the danger of being burned, do not remove the radiator cap while the engine and radiator are still hot. Thermal expansion will cause hot engine coolant and steam that can blow out from the radiator.

a. Remove the radiator cap.





b. Drain engine coolant by loosening the drain cock of the radiator and the water drain cock plug of the water drain cock.
c. Tighten the water drain cock plug of the water drain cock.
Torque: 13 Nm (129 kgf-cm, 9.4 ft. lbs.)
2. ADD ENGINE COOLANT
a. Tighten the radiator drain cock, and pour coolant into the radiator until it overflows.
Capacity:
M/T 4.4 liters (4.6 US qts, 3.9 Imp. qts)
A/T 4.3 liters (4.5 US qts, 3.8 Imp. qts)

HINT:
^ The use of improper coolant may damage the engine cooling system.
^ Only use Toyota Super Long Life Coolant or similar high quality ethylene glycol based nonsilicate,nonamine, nonnitrite, and nonborate 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).
^ New Toyota vehicles are filled with Toyota Super Long Life Coolant (color is pink, premixed ethylene glycol concentration is approximately 50 % and freezing temperature is -35°C (-31°F). When replacing the coolant, Toyota Super Long Life Coolant is recommended.

NOTICE: Do not substitute plain water for engine coolant.

b. Check the coolant level inside the radiator by pressing the inlet and outlet radiator hoses several times by hand. If the coolant level goes down, add coolant.
c. Install the radiator cap securely.
d. Slowly pour coolant into the radiator reservoir until it reaches the FULL line.





e. Warm up the engine until the cooling fan operates.
^ Set the air conditioning as follows while warming up the engine.
^ Maintain the engine speed at 2,000 to 2,500 rpm and warm up the engine until the cooling fan operates.
f. Squeeze the inlet and outlet radiator hoses several times by hand while warming up the engine.
g. Stop the engine and wait until the coolant cools down.
h. Remove the radiator cap and check the coolant level inside the radiator.
i. If the coolant level is below the full level, perform the steps from (a) through (h) and repeat the operation until the coolant level remains the full level.
j. Recheck the coolant level inside the radiator reservoir tank. If it is below the full level, add coolant.
3. CHECK FOR ENGINE COOLANT LEAKS
a. Fill the radiator with engine coolant and attach a radiator cap tester.
b. Pump it to 137 kPa (1.4 kgf/cm2, 1.99 psi) and check for leakage.