Replacement [02/2014 - ]: Procedure

Refer to PROCEDURE - Step 11 (REMOVAL [02/2014 - 11/2015])

Refer to PROCEDURE - Step 11 (REMOVAL [11/2015 - 11/2016])

Refer to PROCEDURE - Step 11 (REMOVAL [11/2016 - ])

1. Remove the reserve tank cap from the inverter reserve tank assembly.
   WARNING:

   To avoid the danger of being burned, do not remove the reserve tank cap while the coolant for the inverter is still hot.

2. Loosen the radiator drain cock plug and drain the coolant (for inverter).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   WARNING:

   Use caution when handling coolant immediately after driving or in summer because it may be hot.

3. Tighten the radiator drain cock plug.

1. Slowly pour coolant into the inverter reserve tank assembly until it reaches the full line.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Coolant Quantity

   1.9 liters (2.0 US qts, 1.7 Imp. qts.)

   NOTE:

   To prevent foreign matter such as dust or dirt from entering the cooling system, make sure to confirm that the container used to add coolant is clean and free of foreign matter.

2. When using the Techstream:
   1. Connect the Techstream to the DLC3.
   2. Turn the power switch on (IG).
   3. Enter the following menus: Powertrain / Hybrid Control / Active Test / Activate the (Inverter) Water Pump.

      Powertrain > Hybrid Control > Active Test 

      Tester Display
      Activate the (Inverter) Water Pump

   4. While adding coolant to the inverter reserve tank assembly to keep the coolant at the full line and compensate for the drop in the coolant level as the air bleeds, operate and stop the inverter water pump assembly at 1 minute intervals.

      Standard

      Air bleeding from the inverter cooling system is completed when the noise made by the inverter water pump assembly becomes smaller and the circulation of coolant in the inverter reserve tank assembly improves.

      HINT: 

      • If free spinning of the inverter water pump assembly is detected for approximately 6 seconds, fail-safe control will be activated to suspend the operation of the pump for approximately 15 seconds and resume operation for approximately 4 seconds repeatedly. Operation of the inverter water pump assembly will return to normal if coolant is added.
      • Loud noises made by the inverter water pump assembly and poor circulation of coolant in the inverter reserve tank assembly indicate that there is air in the cooling system.
3. When not using the Techstream:
   1. Turn the power switch on (READY). [*1]
   2. Turn the power switch off and add coolant to the full line because the coolant level drops as the air bleeds. [*2]
      NOTE:

      • Be sure to turn the power switch off before adding SLLC.
      • Do not work on the components in the engine compartment while the power switch is on (READY) as the engine will operate intermittently.
   3. Repeat steps [*1] and [*2] until air bleeding from the cooling system is completed.

      Standard

      Air bleeding from the inverter cooling system is completed when the noise made by the inverter water pump assembly becomes smaller and the circulation of coolant in the inverter reserve tank assembly improves.

      HINT: 

      Loud noises made by the inverter water pump assembly and poor circulation of coolant in the inverter reserve tank assembly indicate that there is air in the cooling system.

4. After the air is completely bled from the cooling system, add coolant to the full line of inverter reserve tank assembly and install the reserve tank cap.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

See step  1

Refer to PROCEDURE - Step 78 (INSTALLATION [02/2014 - 11/2015])

Refer to PROCEDURE - Step 77 (INSTALLATION [11/2015 - 11/2016])

Refer to PROCEDURE - Step 84 (INSTALLATION [11/2016 - ])