Replacement [11/2021 - 03/2024]: Procedure

Refer to PROCEDURE - Step 1

HINT: 

If no parts have been removed and installed, it is not necessary to start the oil pump with motor assembly (step [#9]) when replacing the hybrid transaxle fluid, performing a fluid level inspection, etc.

1. Lift the vehicle. [#1]
   NOTE:

   Set the vehicle on a lift so that the vehicle is kept level when it is lifted up (make sure that the tilt angle from the front to rear of the vehicle is within +/- 1°).

2. Using a 10 mm hexagon socket wrench, remove the filler plug and gasket from the hybrid vehicle transaxle assembly. [#2]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

3. Using a 10 mm hexagon socket wrench, remove the drain plug and gasket from the hybrid vehicle transaxle assembly and drain the hybrid transaxle fluid. [#3]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

4. Using a 10 mm hexagon socket wrench, temporarily install the drain plug and gasket to the hybrid vehicle transaxle assembly. [#4]

   HINT: 

   Reuse the old gasket as the drain plug will be removed again.

5. Add hybrid transaxle fluid until the hybrid transaxle fluid level is between 0 to 10 mm (0 to 0.394 in.) from the bottom lip of the filler plug opening. [#5]
   NOTE:

   • Use Toyota Genuine ATF WS.

     Using hybrid transaxle fluid other than the above type may cause abnormal noise or vibration, or ultimately damage the transaxle of the vehicle.

   • Be sure to fully insert the filler nozzle into the filler plug opening.
   • Be sure to add hybrid transaxle fluid slowly. If hybrid transaxle fluid is added quickly, the hybrid transaxle fluid may hit internal parts and bounce back, resulting in hybrid transaxle fluid coming out of the filler plug opening.
   • Be sure to directly check that the hybrid transaxle fluid level is within the specified range.
   • Driving the vehicle with an insufficient or excessive amount of hybrid transaxle fluid may damage the hybrid vehicle transaxle assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Filler Nozzle
   *b	0 to 10 mm (0 to 0.394 in.)

6. Using a 10 mm hexagon socket wrench, temporarily install the filler plug and gasket to the hybrid vehicle transaxle assembly. [#6]

   HINT: 

   Reuse the old gasket as the filler plug will be removed again.

7. Lower the vehicle. [#7]
8. Start the engine. [#8]
   1. Put the engine in Inspection Mode (Maintenance Mode).

      Refer to INSPECTION MODE PROCEDURE [11/2021 - ]

   2. Idle the engine for 30 seconds with the ignition switch ON (READY).
   3. Turn the ignition switch off.
9. Start the oil pump with motor assembly. [#9]
   1. According to the display on the GTS perform the Active Test.

      Powertrain > Hybrid Control > Active Test 

      Tester Display
      Control the Motor/Generator Cooling Oil Pump

      NOTE:

      The active test is not performed when the Duty ratio is 50% or lower or 95% or higher, or the ambient temperature is 0°C (32°F) or lower.

   2. Start the oil pump with motor assembly and wait for 30 seconds.
   3. Stop the oil pump with motor assembly.
   4. Turn the ignition switch off.
10. Repeat steps [#1] to [#9].
11. Repeat steps [#1] to [#3].
12. Using a 10 mm hexagon socket wrench, install the drain plug and a new gasket to the hybrid vehicle transaxle assembly.

    Torque: 50 N.m (510 kgf/cm, 37 ft.lbf) 

13. Using a 10 mm hexagon socket wrench, temporarily install the filler plug and gasket to the hybrid vehicle transaxle assembly.

    HINT: 

    Reuse the old gasket as the filler plug will be removed again.

Refer to PROCEDURE - Step 3

Refer to PROCEDURE - Step 2

Refer to PROCEDURE - Step 6