HYBRID TRANSMISSION FLUID ADJUSTMENT

PROCEDURE


  1. BEFORE REFILLING TRANSMISSION


    • This transmission requires Toyota Genuine ATF WS.

    • After servicing the transmission, you must refill the transmission with the correct amount of fluid.

    • Maintain the vehicle in a horizontal position while adjusting the fluid level.

    • If fluid has seeped out or an oil cooler hose has been disconnected, proceed to "FILL TRANSMISSION PAN". If any of the entire transmission, transmission pan, drain plug, transmission wire or oil pressure switches is replaced, proceed to "FILL TRANSMISSION".

    • If the entire transmission is replaced, proceed to the "PERFORM FLUID CIRCULATION" procedure.

      Tech Tips

      New transmissions are already filled with transmission fluid.

  2. FILL TRANSMISSION PAN WITH FLUID

    Note


    • Fill with ATF while the transmission is at normal operating temperature.

    • After filling ATF, adjust the fluid level.


    1. Lift the vehicle up while keeping the vehicle level.

      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. Remove the front suspension member brace Click here.

    3. Remove the No. 2 engine under cover Click here.

    4. A000T0X

      Disconnect the oil cooler hose.

      Note

      Do not touch any parts that may be hot, such as the exhaust pipe.

      Tech Tips

      Cover the disconnected oil cooler hose with a plastic bag or tape to prevent fluid from dripping.

    5. A000QJP

      Add fluid until it comes out of the disconnected oil cooler hose.

      Note

      Use Toyota Genuine ATF WS.

      Tech Tips

      Specified amount of fluid is 5.0 liters (5.3 US qts, 4.4 Imp qts).

    6. A000T0X

      Connect the oil cooler hose.

      Note

      Be sure to adjust the fluid level after adding fluid.

      Tech Tips

      Proceed to "PERFORM FLUID CIRCULATION".

  3. FILL TRANSMISSION

    Note


    • Fill with ATF while the transmission is at normal operating temperature.

    • After filling ATF, adjust the fluid level.


    1. Lift the vehicle up while keeping the vehicle level.

      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. Remove the front suspension member brace Click here.

    3. Remove the No. 2 engine under cover Click here.

    4. A000O10E04
      Text in Illustration
      *1 Overflow Plug

      Remove the overflow plug.

    5. A000T0X

      Disconnect the oil cooler hose.

      Note

      Do not touch any parts that may be hot, such as the exhaust pipe.

      Tech Tips

      Cover the disconnected oil cooler hose with a plastic bag or tape to prevent fluid from dripping.

    6. A000SLJE03
      Text in Illustration
      *1 Overflow Tube

      Add fluid to the disconnected oil cooler hose until fluid comes out of the overflow tube.

      Note

      Use Toyota Genuine ATF WS.

    7. A000O10E04
      Text in Illustration
      *1 Overflow Plug

      Reinstall the overflow plug.

      Tech Tips

      The overflow plug will be removed again later. Therefore, reuse the gasket at this step.

    8. A000QJP

      Add 1.1 liters (1.2 US qts, 1.0 Imp qts.) of ATF to the disconnected oil cooler hose.

      Note

      Use Toyota Genuine ATF WS.

    9. A000T0X

      Connect the oil cooler hose.

      Note

      Be sure to adjust the fluid level after adding fluid.

      Tech Tips

      Proceed to "PERFORM FLUID CIRCULATION"

  4. PERFORM FLUID CIRCULATION


    1. Allow the engine to idle with the air conditioning OFF.

    2. Move the shift lever through the entire gear range to circulate fluid.

    3. Enter the following menus: Powertrain / Hybrid Control / Data List / T/M Oil Temperature and Line Pressure.

    4. Check T/M Oil Temperature and Line Pressure.

    5. Before adjusting the fluid amount, make sure that Line Pressure is OFF with the power switch on (READY).

      Standard
      Line Pressure: OFF

      Note


      • If Line Pressure is ON, the fluid amount cannot be adjusted accurately.

      • If Line Pressure is still ON even after the power switch has been turned on (READY), troubleshoot the system in accordance with the output DTC. Adjust the fluid amount only after making sure that Line Pressure is OFF.

    6. After adjusting the fluid amount, make sure that Line Pressure remains OFF with the power switch on (READY).

      Standard
      Line Pressure: OFF

      Note


      • If Line Pressure is ON, the fluid amount has not been adjusted accurately.

      • Turn the power switch on (READY) or troubleshoot the system in accordance with the output DTC. Then adjust the fluid amount only after making sure that Line Pressure is OFF.

    7. Allow the engine to idle until the fluid temperature reaches 30°C (86°F). Proceed to the next step to check fluid temperature.

      Tech Tips

      The fluid temperature should be less than 40°C (104°F) before starting the engine.

  5. CHECK FLUID TEMPERATURE

    Note


    • The fluid temperature can be confirmed by checking the D shift indicator in the meter or using the GTS. It is necessary to change to fluid temperature detection mode.

    Tech Tips


    • The fluid temperature should be less than 30°C (86°F) before beginning the fluid temperature check.

    • Fluid temperature detection mode will be canceled if the power switch is turned off.


    1. When using the GTS:


      1. Turn the power switch off.

      2. Connect the GTS to the DLC3.

      3. Turn the power switch on (READY).

        Note

        Check that electrical systems such as the air conditioning system, audio system and lighting system are off.

      4. Turn the GTS on.

      5. Enter the following menus: Powertrain / Hybrid Control / Active Test / Connect the TC and TE1 / ON.

      6. Enter the following menus: Powertrain / Hybrid Control / Data List / T/M Oil Temperature and Line Pressure.

      7. Check Line Pressure.

        Standard
        Line Pressure: OFF

        Note


        • Make sure that Line Pressure is OFF.

        • If Line Pressure is ON, the fluid amount cannot be adjusted accurately.

        • If Line Pressure is still ON even after the power switch has been turned on (READY), troubleshoot the system in accordance with the output DTC. Adjust the fluid amount only after making sure that Line Pressure is OFF.

      8. Move the shift lever from P to D.

      9. Move the shift lever to D, and quickly move back and forth between N and D (once within 1.5 seconds) for at least 6 seconds. This will activate fluid temperature detection mode.

        Note

        The D shift indicator remains illuminated for 2 seconds and then turns off.

      10. Move the shift lever to P.

      11. Push the Active Test menu: Connect TC and TE1/ OFF.

        Note


        • Make sure to turn Connect TC and TE1 off. If it is not turned off, the fluid level will not be adjusted correctly.

        • If Connect TC and TE1 is not turned off, the fluid temperature may quickly exceed the allowable temperature adjustment range.

    2. When not using the GTS (Using the D shift indicator):


      1. A000SIZE09
        Text in Illustration
        *a Front view of DLC3

        Using SST, connect terminals TC and CG of the DLC3.

        SST
        09843-18040

      2. Turn the power switch on (READY).

        Note

        Check that electrical systems such as the air conditioning system, audio system and lighting system are off.

      3. Move the shift lever from P to D.

      4. Move the shift lever back and forth between N and D at 1.5 second intervals for 6 seconds.

      5. Move the shift lever to D, and quickly move back and forth between N and D (once within 1.5 seconds) for at least 6 seconds. This will activate fluid temperature detection mode.

        Note

        The D shift indicator remains illuminated for 2 seconds and then turns off.

      6. Move the shift lever to P.

      7. Disconnect SST from the DLC3.

        Note


        • Make sure to disconnected terminals TC and CG. If they are not disconnected, the fluid level will not be adjusted correctly.

        • If terminals TC and CG are not disconnected, the fluid temperature may quickly exceed the allowable temperature adjustment range.

    3. Allow the engine to idle until the fluid temperature reaches 30 to 40°C (86 to 104°F).

    4. The D shift indicator will come on again when the fluid temperature reaches 46°C (115°F) and will blink when it exceeds 51°C (124°F).

      Tech Tips

      Adjust the transmission fluid level when the "D" shift position indicator is illuminated.


      • If the "D" shift position indicator is not illuminated, idle the engine to warm it up until the "D" shift position indicator illuminates.

      • If the "D" shift position indicator is illuminated, immediately begin to adjust the fluid level.

      • If the "D" shift position indicator is blinking, stop the engine to cool the fluid. Once the fluid temperature drops to the appropriate level, perform the fluid level adjustment procedure again.

      D Shift Indicator Indication of ATF Temperature
      Below Proper Temperature Proper Temperature Higher than Proper Temperature
      Data List: [A/T Oil Temperature 1] 30°C (86°F) or less Data List: [A/T Oil Temperature 1] 30 to 40°C (86 to 104°F) Data List: [A/T Oil Temperature 1] 40°C (104°F) or higher
      D shift indicator: Turn off D shift indicator: Turn on D shift indicator: Blinking

  6. ADJUST FLUID LEVEL

    Note


    • Make sure that Line Pressure is OFF.

    • If Line Pressure is ON, the fluid amount cannot be adjusted accurately.

    • After adjusting the fluid amount, make sure that Line Pressure remains OFF with the power switch on (READY).

    • The fluid temperature must be between 30°C (86°F) and 40°C (104°F) to check the fluid level.


    1. A000QDUE04
      Text in Illustration
      *1 Overflow Plug
      *2 Overflow Tube

      Remove the overflow plug. At the proper fluid inspection temperature, check the fluid amount.

      If the ATF flows from the overflow tube and the ATF flows in a thin stream, the fluid amount is normal.

    2. A000O10E04
      Text in Illustration
      *1 Overflow Plug

      Install a new gasket and the overflow plug.

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

    3. Install the No. 2 engine under cover Click here.

    4. Install the front suspension member brace Click here.

    5. Lower the vehicle.

    6. After adjusting the fluid amount, confirm that Line Pressure remains OFF with the power switch on (READY).

      Standard
      Line Pressure: OFF

      Note


      • If Line Pressure is ON, the fluid amount has not been adjusted accurately.

      • Turn the power switch on (READY) or troubleshoot the system in accordance with the output DTC. Then adjust the fluid amount only after making sure that Line Pressure is OFF.

    7. Turn the power switch off.

      Tech Tips

      Fluid temperature detection mode will be canceled if the power switch is turned off.