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Replacement [12/2021 - ]: Procedure

  1. REMOVE NO. 1 ENGINE UNDER COVER ASSEMBLY 

    See step  2

  2. DRAIN ENGINE COOLANT 
    WARNING:

    Do not remove the reserve tank cap or drain cock plug while the engine and radiator assembly are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.

    1. Connect a hose with an inside diameter of 9 mm (0.354 in.) to the radiator drain cock as shown in the illustration.
      GTY1042197Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hose
    2. Connect a hose with an inside diameter of 8 mm (0.315 in.) to the cylinder block water drain cock plug as shown in the illustration.
      GTY1041456Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hose
    3. Loosen the radiator drain cock plug.
      GTY1074341Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Radiator Drain Cock Plug *2 Cylinder Block Water Drain Cock Plug
    4. Remove the reserve tank cap. Then drain the engine coolant.

      HINT: 

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

    5. Loosen the cylinder block water drain cock plug.
    6. Tighten the cylinder block water drain cock plug.

      Torque: 12.7 N.m (130 kgf/cm, 9 ft.lbf) 

    7. Tighten the radiator drain cock plug by hand.
    8. Disconnect the hose from the cylinder block water drain cock plug.
    9. Disconnect the hose from the radiator drain cock.
  3. ADD ENGINE COOLANT 
    WARNING:
    • Do not remove the reserve tank cap or drain cock plug while the engine and radiator assembly are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.
    • To prevent injury due to contact with an operating fan and generator V belt or cooling fan, keep your hands and clothing away from the fan and generator V belt and cooling fans when working in the engine compartment with the engine running.
    NOTE:

    Do not substitute plain water for engine coolant.

    HINT: 

    Before adding coolant, turn the A/C switch off.

    1. Remove the reserve tank cap.
    2. Remove the radiator drain cock and remove the O-ring from the radiator drain cock.
      GTY1042106Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Inject the specified concentration of coolant through the radiator side drain cock until the radiator is full.
      NOTE:

      Do not substitute plain water for engine coolant.

      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 consists of a combination of low phosphates and organic acids).

      Specified Capacity

      14.7 liters (15.5 US qts, 12.9 Imp. qts)

    4. Squeeze the No. 1 radiator hose and No. 2 radiator hose several times by hand, and then check the level of the engine coolant.

      If the engine coolant level is low, add engine coolant.

    5. Install a new O-ring to the radiator drain cock and install the radiator drain cock.

      Torque: 2.0 N.m (20 kgf/cm, 18 in.lbf) 

      NOTE:

      Keep the O-ring and O-ring fitting surface free of foreign matter.

    6. Install the reserve tank cap.
    7. Bleed air from the cooling system.
      1. Warm up the engine until the water inlet with thermostat sub-assembly opens. While the water inlet with thermostat sub-assembly is open, circulate the engine coolant for several minutes.
        NOTE:
        • Make sure that the radiator reserve tank assembly still has some engine coolant in it.
        • If the engine coolant temperature gauge indicates an excessive temperature, turn off the engine and let it cool.
        • If there is not enough engine coolant, the engine may overheat or be seriously damaged.
        • If the radiator reserve tank assembly does not have enough engine coolant, perform the following: 1) stop the engine, 2) wait until the engine coolant cools down, and 3) add engine coolant until the radiator reserve tank assembly is filled to the full line.
      2. Maintain the engine speed at 2500 to 3000 rpm.
      3. Squeeze the No. 1 radiator hose and No. 2 radiator hose several times by hand to bleed air.
        WARNING:
        • Because the engine, radiator assembly, No. 1 radiator hose and No. 2 radiator hose are extremely hot, do not perform these procedures without wearing protective gloves.
        • Performing these procedures without wearing protective gloves could result in burns.
        • Touching rotating components such as the cooling fan could result in your hand or clothing getting caught and pulled in.
    8. Stop the engine, and wait until the engine coolant cools down.
    9. After the engine coolant cools down, check that the coolant level is at the F line.

      If the coolant level is below the F line, add engine coolant to the F line.

  4. INSPECT FOR COOLANT LEAK 

    Refer to PROCEDURE - Step 3

  5. INSTALL NO. 1 ENGINE UNDER COVER ASSEMBLY 

    See step  12

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