HYBRID TRANSMISSION FLUID HIGH TEMPERATURE ADJUSTMENT

CAUTION / NOTICE / HINT

CAUTION:


  • B000O21

    Be careful not to burn yourself when the transmission fluid temperature is high.

  • B000SXA

    To prevent injury due to contact with an operating V-ribbed belt or cooling fan, keep your hands and clothing away from the V-ribbed belt and cooling fans when working in the engine compartment with the power switch on (READY) or the power switch on (IG).

  • B000RKX

    To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.

PROCEDURE


  1. ADJUST TRANSMISSION FLUID LEVEL AT HIGH TEMPERATURE


    1. Check the transmission fluid temperature.


      1. Connect the GTS to the DLC3 with the power switch off.

      2. Put the engine in inspection mode.

        Click here

      3. Turn the GTS on.

        Note

        To reduce load, make sure that all electrical systems, such as the air conditioning and audio system, are off.

      4. Enter the following menus: Powertrain / Hybrid Control / Data List / Transmission Fluid Temperature and Engine Speed.


        Powertrain > Hybrid Control > Data List
        Tester Display
        Transmission Fluid Temperature
        Engine Speed

        Note


        • If the transmission fluid temperature tends to decrease when the transmission fluid temperature is between 75 to 80°C (167 to 176°F) with the engine idling, make sure that transmission fluid temperature is above 80°C (176°F) before starting work.

        • If the transmission fluid temperature tends to increase when the transmission fluid temperature is between 75 to 80°C (167 to 176°F) with the engine idling, make sure that transmission fluid temperature is below 75°C (167°F) before starting work.

        • If the transmission fluid temperature tends to not change when the transmission fluid temperature is between 75 to 80°C (167 to 176°F) with the engine idling, make sure that transmission fluid temperature is 77.5°C (172°F) before starting work.

    2. Depress and hold the brake pedal.

    3. Slowly move the shift position from P to M in the order of P → R → N → D → M to circulate the transmission fluid through each part of the transmission, and then move the shift position back to P.

      Tech Tips

      Keep the shift lever in each position for approximately 3 seconds.

    4. Lift the vehicle.

      Note

      The transmission fluid level cannot be measured accurately if the vehicle is not level. Make sure it is held level.

    5. B000PE0

      Remove the refill plug and gasket from the hybrid vehicle transmission assembly.

    6. B000R9UC03
      *a SST (Filler Plug Adapter)

      Install SST (filler plug adapter) to the refill plug hole.

      SST
      09993-19025   ( 09993-10010, 09993-01030 )
    7. B000SG4C02
      *a SST (Vacuum Regulator)

      Connect SST (vacuum regulator) to SST (filler plug adapter).

      SST
      09993-19025   ( 09993-10010, 09993-01020 )
    8. B000OJ5C02
      *a SST (Vacuum Regulator)
      *b SST (Tank Assembly)
      *c Hose of SST (Tank Assembly)
      *d Valve Handle (Upper Valve)
      *e Valve Handle (Lower Valve)

      Connect the hose of SST (tank assembly) to SST (vacuum regulator).

      SST
      09993-19025   ( 09993-20010 )

      Note

      Ensure both of the valves of SST (tank assembly) are closed by turning the valve handle (upper valve) and valve handle (lower valve) to the position shown in the illustration so they are perpendicular to the hoses.

    9. Connect a compressed air hose to SST (tank assembly).

      Note

      Do not apply 689 kPa (7.0 kgf/cm2, 100 psi) or more of compressed air to SST (tank assembly).

    10. B000QXX

      Open the lower valve of SST (tank assembly) by turning the valve handle (lower valve) so it is in-line with the compressed air hose.

    11. B000NTM

      Open the upper valve of SST (tank assembly) by turning the valve handle (upper valve) so it is in-line with the hose of SST (tank assembly).

      Note


      • Make sure to turn the valve handle (upper valve) slowly.

      • Make sure the value on the gauge of SST (vacuum regulator) stays between -10 to -20 kPa (-0.1 to -0.2 kgf/cm2, -1.5 to -2.9 psi).

      • If the value on the gauge of SST (vacuum regulator) exceeds -20 kPa (-0.2 kgf/cm2, -2.9 psi), make sure to turn the valve handle (upper valve) so it is perpendicular to the hose of SST (tank assembly) immediately, otherwise parts inside the hybrid vehicle transmission assembly may be damaged.

      B000NW8

      Tech Tips

      Vacuum will be applied to the hybrid vehicle transmission assembly when both of the valves of SST (tank assembly) are opened to prevent transmission fluid loss when removing/installing the overflow plug.

    12. B000RAG

      Using a 5 mm hexagon socket wrench, remove the overflow plug and gasket from the hybrid vehicle transmission assembly.

      CAUTION:

      A small amount of HOT transmission fluid may leak from the overflow plug hole during removal.

      Tech Tips

      Place an oil drain pan under the overflow plug hole to collect any transmission fluid.

    13. B000OZHC02
      *a SST (Overflow Level Gauge)
      *b SST (Adapter 10)

      Install SST (adapter 10) to SST (overflow level gauge) and then install SST (overflow level gauge) to the overflow plug hole by hand until it is fully seated against the transmission oil pan sub-assembly.

      SST
      09993-19025   ( 09993-10010, 09993-01010 )
      09993-01110

      Note

      Ensure that the sliding tube of SST (overflow level gauge) is fully retracted into the housing of SST (overflow level gauge) before inserting it into the overflow plug hole.

      Tech Tips

      The level/measurement indicator on SST (overflow level gauge) will read 0 mm (0 in.) when the sliding tube of SST (overflow level gauge) is fully retracted.

    14. Adjust SST (overflow level gauge) to the specified measurement according to the table below and lock the sliding scale of SST (overflow level gauge) by tightening the thumb screw.

      Specified Measurement
      Specified measurement at transmission fluid temperature of 75 to 80°C (167 to 176°F)
      77.7 mm (3.06 in.)

      Note

      For high temperature adjustment, the transmission fluid oil temperature should be between 75 to 80°C (167 to 176°F) before carrying out work.

    15. B000PWA

      Close the upper valve of SST (tank assembly) by turning the valve handle (upper valve) so it is perpendicular to the hose of SST (tank assembly).

      Note


      • Make sure to turn the valve handle (upper valve) slowly.

      • Make sure that the gauge of SST (vacuum regulator) reads 0 kPa (0 kgf/cm2, 0 psi).

      Tech Tips

      Vacuum that was applied to the hybrid vehicle transmission assembly will not be applied when the valve handle (upper valve) is closed.

    16. Observe transmission fluid flowing from the hose at the bottom of SST (overflow level gauge).


      • If the amount of transmission fluid that comes out of SST (overflow level gauge) is large, proceed to step [#1].

      • If no transmission fluid comes out of SST (overflow level gauge), proceed to step [#2].

    17. [#1] If the amount of transmission fluid that comes out of SST (overflow level gauge) is large.


      1. Wait until the transmission fluid flow slows and only drips come out.

        B000T7Z

        Tech Tips

        The transmission fluid flow will not stop completely because the transmission fluid continues to expand as its temperature increases.

      2. B000NTM

        Open the upper valve of SST (tank assembly) by turning the valve handle (upper valve) so it is in-line with the hose of SST (tank assembly).

        Note


        • Make sure to turn the valve handle (upper valve) slowly.

        • Make sure the value on the gauge of SST (vacuum regulator) stays between -10 to -20 kPa (-0.1 to -0.2 kgf/cm2, -1.5 to -2.9 psi).

        • If the value on the gauge of SST (vacuum regulator) exceeds -20 kPa (-0.2 kgf/cm2, -2.9 psi), make sure to turn the valve handle (upper valve) so it is perpendicular to the hose of SST (tank assembly) immediately, otherwise parts inside the hybrid vehicle transmission assembly may be damaged.

        B000NW8

        Tech Tips

        Vacuum will be applied to the hybrid vehicle transmission assembly when both of the valves of SST (tank assembly) are opened to prevent transmission fluid loss when removing/installing the overflow plug.

      3. Remove SST (overflow level gauge) from the overflow plug hole.

      4. B000QT4C01
        *1 Gasket

        Using a 5 mm hexagon socket wrench, install the overflow plug and a new gasket to the hybrid vehicle transmission assembly.

        Torque:
        20 N*m  { 204 kgf*cm, 15 ft.*lbf }

        Note

        Install the flat side of the gasket to the drain plug side.

      5. B000PWA

        Close the upper valve of SST (tank assembly) by turning the valve handle (upper valve) so it is perpendicular to the hose of SST (tank assembly).

        Note


        • Make sure to turn the valve handle (upper valve) slowly.

        • Make sure that the gauge of SST (vacuum regulator) reads 0 kPa (0 kgf/cm2, 0 psi).

        Tech Tips

        Vacuum that was applied to the hybrid vehicle transmission assembly will not be applied when the valve handle (upper valve) is closed.

      6. B000S74

        Close the lower valve of SST (tank assembly) by turning the valve handle (lower valve) so it is perpendicular to the compressed air hose.

      7. Disconnect the compressed air hose from SST (tank assembly).

      8. Disconnect the hose of SST (tank assembly) from SST (vacuum regulator).

      9. Disconnect SST (vacuum regulator) from SST (filler plug adapter).

      10. Remove SST (filler plug adapter) from the refill plug hole.

    18. [#2] If no transmission fluid comes out of SST (overflow level gauge).


      1. B000R9UC03
        *a SST (Filler Plug Adapter)

        Remove SST (filler plug adapter) from the refill plug hole.

      2. Add transmission fluid through the refill plug hole until fluid comes out of SST (overflow level gauge).

        B000STHC02
        *a SST (Overflow Level Gauge) - -

        Note


        • Use Toyota Genuine ATF WS.

        • Be sure to add transmission fluid slowly. If transmission fluid is added quickly, the transmission fluid may hit internal parts and bounce back, resulting in transmission fluid coming out of the refill hole.

      3. Wait until the transmission fluid flow slows and only drips come out.

        B000T7Z

        Tech Tips

        The transmission fluid flow will not stop completely because the transmission fluid continues to expand as its temperature increases.

      4. B000R9UC03
        *a SST (Filler Plug Adapter)

        Install SST (filler plug adapter) to the refill plug hole.

        SST
        09993-19025   ( 09993-10010, 09993-01030 )
      5. B000NTM

        Open the upper valve of SST (tank assembly) by turning the valve handle (upper valve) so it is in-line with the hose of SST (tank assembly).

        Note


        • Make sure to turn the valve handle (upper valve) slowly.

        • Make sure the value on the gauge of SST (vacuum regulator) stays between -10 to -20 kPa (-0.1 to -0.2 kgf/cm2, -1.5 to -2.9 psi).

        • If the value on the gauge of SST (vacuum regulator) exceeds -20 kPa (-0.2 kgf/cm2, -2.9 psi), make sure to turn the valve handle (upper valve) so it is perpendicular to the hose of SST (tank assembly) immediately, otherwise parts inside the hybrid vehicle transmission assembly may be damaged.

        B000NW8

        Tech Tips

        Vacuum will be applied to the hybrid vehicle transmission assembly when both of the valves of SST (tank assembly) are opened to prevent transmission fluid loss when removing/installing the overflow plug.

      6. Remove SST (overflow level gauge) from the overflow plug hole.

      7. B000QT4C01
        *1 Gasket

        Using a 5 mm hexagon socket wrench, install the overflow plug and a new gasket to the hybrid vehicle transmission assembly.

        Torque:
        20 N*m  { 204 kgf*cm, 15 ft.*lbf }

        Note

        Install the flat side of the gasket to the drain plug side.

      8. B000PWA

        Close the upper valve of SST (tank assembly) by turning the valve handle (upper valve) so it is perpendicular to the hose of SST (tank assembly).

        Note


        • Make sure to turn the valve handle (upper valve) slowly.

        • Make sure that the gauge of SST (vacuum regulator) reads 0 kPa (0 kgf/cm2, 0 psi).

        Tech Tips

        Vacuum that was applied to the hybrid vehicle transmission assembly will not be applied when the valve handle (upper valve) is closed.

      9. B000S74

        Close the lower valve of SST (tank assembly) by turning the valve handle (lower valve) so it is perpendicular to the compressed air hose.

      10. Disconnect the compressed air hose from SST (tank assembly).

      11. Disconnect the hose of SST (tank assembly) from SST (vacuum regulator).

      12. Disconnect SST (vacuum regulator) from SST (filler plug adapter).

      13. Remove SST (filler plug adapter) from the refill plug hole.

    19. B000PE0

      Coat a new gasket with transmission fluid.

    20. Install the refill plug and gasket to the hybrid vehicle transmission assembly.

      Torque:
      40 N*m  { 408 kgf*cm, 30 ft.*lbf }

    21. Lower the vehicle.

    22. Turn the power switch off.

    23. Disconnect the GTS from the DLC3.

  2. AFTER FILLING HYBRID TRANSMISSION

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