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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 79 (Hybrid Transaxle System / Rear Traction Motor (Q610) - Service Information) >> Hybrid Transaxle Fluid >> Adjustment [12/2019 - ] >> Procedure

Adjustment [12/2019 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. DRAIN HYBRID TRANSAXLE FLUID 
    1. Using a 10 mm union nut wrench and 10 mm straight hexagon, remove the filler plug and gasket from the rear traction motor with transaxle assembly.
      GTY918452Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using a 10 mm hexagon socket wrench, remove the drain plug and gasket from the rear traction motor with transaxle assembly and drain the hybrid transaxle fluid.
      GTY853814Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using a 10 mm hexagon socket wrench, install the drain plug and a new gasket to the rear traction motor with transaxle assembly.

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

    4. Using a 10 mm union nut wrench and 10 mm straight hexagon, temporarily install the gasket and filler plug to the rear traction motor with transaxle assembly.

      HINT: 

      Because the filler plug will be removed again, the gasket can be reused at this time.

  2. ADD HYBRID TRANSAXLE FLUID 
    1. Using a 10 mm union nut wrench and 10 mm straight hexagon, remove the filler plug and gasket from the rear traction motor with transaxle assembly.
      GTY918452Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Add hybrid transaxle fluid until the hybrid transaxle fluid level is between 0 to 5 mm (0 to 0.196 in.) from the bottom lip of the filler plug opening. [#]
      GTY916115Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Filler Nozzle
      *b 0 to 5 mm (0 to 0.196 in.)

      Hybrid Transaxle Fluid Standard Capacity (for Reference)

      1.7 liters (1.8 US qts, 1.5 Imp. qts)

      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 rear traction motor with 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 5 mm (0 to 0.196 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.

      See step  1

    4. Using a 10 mm union nut wrench and 10 mm straight hexagon, temporarily install the gasket and filler plug to the rear traction motor with transaxle assembly.

      HINT: 

      Because the filler plug will be removed again, the gasket can be reused at this time.

  3. INSPECT HYBRID TRANSAXLE FLUID 

    See step  1

  4. INSPECT FOR HYBRID TRANSAXLE FLUID LEAK