Section 722 (Engine Cooling System (3MZ-FE)): Coolant: Replacement

1. Remove the radiator cap.
   CAUTION: Do not remove the radiator cap while the engine and radiator are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.
2. Drain engine coolant by loosening the radiator drain cock plug and the engine's cylinder block drain cock plug.

   HINT:

   Engine coolant inside the radiator is drained from the drain hole located on the bottom of the engine under cover.

3. Tighten the cylinder block drain cock plugs.

Torque:  13 N.m (130 kgf.cm, 10 ft-lbf)

Fig 1: Tightening Cylinder Block Drain Cock Plugs

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1. Tighten the radiator drain plug.
2. Add engine coolant into the radiator until it overflows.

   Capacity:  9.2 liters (9.7 US qts, 8.1 Imp. qts)

   HINT:

   • Use of improper coolants may damage the engine cooling system.
   • 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.
   • New TOYOTA vehicles are filled with TOYOTA Super Long Life Coolant (color is pink, premixed ethyl-ene-glycol concentration is approximately 50% and freezing temperature is -35°C (-31°F)). When replacing the coolant, TOYOTA Super Long Life Coolant is recommended.
   • Observe 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 the coolant.
   NOTE: Do not use plain water alone.
3. Pour coolant into the radiator reservoir tank until the coolant reaches the full line.
4. Install! the radiator cap.
5. Warm up the engine.

   HINT:

   As the engine warms up, press the inlet and outlet radiator hoses several times by hand.

6. Stop the engine and wait until the coolant cools down to room temperature.
7. Remove the radiator cap and check the coolant level inside the radiator.
8. If the coolant level is below the full level, repeat steps  c to  g until the coolant level stays the same from step  c to  g.
9. Install the radiator cap and the check the radiator reservoir tank coolant level. If it is below the full line, add coolant.