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Home >> Toyota >> 2025 >> RAV4 Plug-In Hybrid SE >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Hybrid Transaxle System (P810) - Service Information (PHEV) >> Hybrid Transaxle Fluid >> Adjustment [06/2020 - ] >> Procedure

Adjustment [06/2020 - ]: Procedure

  1. REMOVE FRONT FENDER FRONT SPLASH SHIELD LH 

    Refer to PROCEDURE - Step 11 , or refer to PROCEDURE - Step 11 , or refer to PROCEDURE - Step 11

  2. REMOVE FRONT FENDER FRONT SPLASH SHIELD RH 

    Refer to PROCEDURE - Step 12 , or refer to PROCEDURE - Step 12 , or refer to PROCEDURE - Step 12

  3. REMOVE NO. 1 ENGINE UNDER COVER 

    Refer to PROCEDURE - Step 13 , or refer to PROCEDURE - Step 13 , or refer to PROCEDURE - Step 13

  4. REMOVE NO. 2 ENGINE UNDER COVER ASSEMBLY 

    Refer to PROCEDURE - Step 14 , or refer to PROCEDURE - Step 14 , or refer to PROCEDURE - Step 14

  5. REMOVE FRONT FENDER APRON SEAL LH 

    Refer to PROCEDURE - Step 15 , or refer to PROCEDURE - Step 15 , or refer to PROCEDURE - Step 15

  6. DRAIN HYBRID TRANSAXLE FLUID 
    1. Using a 10 mm hexagon socket wrench, remove the filler plug and gasket from the hybrid vehicle transaxle assembly.
      GTY922180Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. 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.
      GTY922179Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. 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) 

    4. 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.

  7. ADD HYBRID TRANSAXLE FLUID 
    1. Using a 10 mm hexagon socket wrench, remove the filler plug and gasket from the hybrid vehicle transaxle assembly.
      GTY922180Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. 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. [#]
      GTY974578Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Filler Nozzle
      *b 0 to 10 mm (0 to 0.394 in.)

      Hybrid Transaxle Fluid Standard Capacity (for Reference)

      4.4 liters (4.6 US qts, 3.9 Imp. qts)

      NOTE:
      • When adding hybrid transaxle fluid, make sure that the vehicle is level.
      • Use Toyota Genuine ATF WS.

        Using hybrid transmission fluid other than the above type may cause abnormal noise or vibration, or ultimately damage the transmission of your 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.
    3. After adding hybrid transaxle fluid, leave the vehicle for 30 seconds so that the hybrid transaxle fluid surface can become still again, and then check that 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. (If the hybrid transaxle fluid level is low, repeat this procedure from step [#].)
      NOTE:

      After adding hybrid transaxle fluid, make sure to check the hybrid transaxle fluid level.

    4. 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.

  8. INSPECT HYBRID TRANSAXLE FLUID 

    See step  6

  9. INSPECT FOR HYBRID TRANSAXLE FLUID LEAK 
  10. INSTALL FRONT FENDER APRON SEAL LH 

    Refer to PROCEDURE - Step 64

  11. INSTALL NO. 2 ENGINE UNDER COVER ASSEMBLY 

    Refer to PROCEDURE - Step 66

  12. INSTALL NO. 1 ENGINE UNDER COVER 

    Refer to PROCEDURE - Step 67

  13. INSTALL FRONT FENDER FRONT SPLASH SHIELD RH 

    Refer to PROCEDURE - Step 69

  14. INSTALL FRONT FENDER FRONT SPLASH SHIELD LH 

    Refer to PROCEDURE - Step 68