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.

    • New transmissions are already filled with transmission fluid.

    • As the specified temperature for fluid adjustment differs between vehicles used in Middle East and China, and vehicles used in other regions, the procedure is also different. Therefore, perform the correct procedure according to the chart below.

      A000WYJE02
      A000YEME02

  2. CHECK SOC (Battery State of Charge)

    Tech Tips


    • Make sure the shift lever is in N when adjusting the fluid level. As charge control is not performed at this time, the SOC (Battery State of Charge) value must be 50% or more.

    • After charging, moving the vehicle depletes the SOC. Therefore, always set the vehicle on a lift before beginning work.


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Data List / State of Charge.

    4. Check the Battery State of Charge value.

      If the value is 50% or more, proceed to the next step.

      If the value is less than 50%, turn the power switch on (READY) and leave the vehicle as is until the battery state of charge value reaches 50% or more.

      Tech Tips

      Even if the power switch is turned on (READY), the engine may not start and charging will not begin. However, if the battery state of charge value decreases to 42% or less, the engine will start and charging will begin.

    5. Turn the power switch off.

  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.

    2. w/ Cover:


      1. A000ULR

        Remove the 3 screws, 2 bolts, clip and front center floor cover.

    3. A000YCL

      Remove the overflow plug.

    4. A000UPC

      Disconnect the oil cooler hose.

      CAUTION:

      Do not touch any high temperature parts, such as the exhaust pipe.

      Tech Tips

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

    5. A000ZFFE03
      *1 Overflow Tube

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

    6. A000YCL

      Reinstall the overflow plug.

      Tech Tips

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

    7. A000V9U

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

    8. A000UPC

      Connect the oil cooler hose.

      Note

      Be sure to adjust the fluid level after adding fluid.

  4. CHECK VEHICLE CONDITION


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG) and turn the intelligent tester on.

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

    4. Turn the power switch on (READY).

      Note

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

    5. Check the Line Pressure and T/M Oil Temperature.

      Note


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

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

      Tech Tips

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

    7. 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.

    8. Turn the power switch off.

    9. for Vehicles used in Middle East and China.


      1. Turn the power switch on (IG) again.

      2. Enter the following menus: Powertrain / Hybrid Control / Active Test / Connect the TC and TE1, with T/M Oil Temperature, State of Charge, Line Pressure and Engine Spd displayed on the tester.

      3. Check the Battery State of Charge value.

        If the Battery State of Charge value is less than 50%, return to the "Check SOC" procedure and perform charge again.

      4. Check the transmission fluid temperature.

        If the value is below 35°C (95°F), proceed to "Change to Fluid Temperature Detection Mode and Warm Up ATF".

        If the fluid temperature is 35 to 40°C (95 to 104°F), proceed to "Adjust Fluid Level".

        Tech Tips

        If the value is higher than 40°C (104°F), leave the vehicle as is until the fluid temperature is 40°C (104°F) or less, and then preform "Check Vehicle Condition" again.

    10. except Vehicles used in Middle East and China:


      1. Disconnect the intelligent tester from the DLC3.

  5. CHANGE TO FLUID TEMPERATURE DETECTION MODE AND WARM UP ATF


    1. for Vehicles used in Middle East and China:


      1. Turn the power switch on (READY).

        Note

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

      2. With T/M Oil Temperature, State of Charge, Line Pressure and Engine Spd displayed on the tester, push the Active Test menu: Connect the TC and TE1 / ON.

      3. Move the shift lever to the D position, and then quickly move it back and forth between N and D at an interval of 1.5 seconds for 6 seconds or more. This will activate fluid temperature detection mode.

        Standard
        When fluid temperature detection mode is activated, the indicator light (D) remains illuminated for 2 seconds and then goes off.

      4. Return the shift lever to P and push the active test menu: Connect the TC and TE1 / OFF.

      5. Check the T/M Oil Temperature value on the tester display, and turn the power switch off when the value reaches 35°C (95°F).

      6. Turn the power switch on (IG) again.

      7. Display T/M Oil Temperature, State of Charge, Line Pressure and Engine Spd on the intelligent tester again.

    2. except Vehicles used in Middle East and China:


      1. A000T92E19
        *1 OPA

        Using SST, connect terminals 13 (TC), 11 (OPA) and 4 (CG) of the DLC3.

        SST
        09843-18040

      2. Turn the power switch on (READY).

      3. Move the shift lever to the D position, and then quickly move it back and forth between N and D at an interval of 1.5 seconds for 6 seconds or more. This will activate fluid temperature detection mode.

        Standard
        When fluid temperature detection mode is activated, the indicator light (D) remains illuminated for 2 seconds and then goes off.

      4. Return the shift lever to P and disconnect terminal 13 (TC).

      5. Idle the engine to raise the temperature of the ATF.

  6. ADJUST FLUID LEVEL

    CAUTION:

    Do not touch any high temperature parts, such as the exhaust pipe.


    1. for Vehicles used in Middle East and China:


      1. Turn the power switch on (READY).

      2. Move the shift lever to P, depress the accelerator pedal and start the engine.

        Tech Tips

        Depending on the amount of battery charge, the engine may already be running.

        Note

        Check State of Charge in the Data List. If the Battery State of Charge value is less than 50%, return to the Check SOC procedure and perform charging again.

      3. Release the accelerator pedal, depress the brake pedal, and move the shift lever to N while the engine is running.

      4. Check Engine Spd in the Data List. Check that the engine speed is 950 to 1050 rpm.

      5. In order to be able to check the Data List, take the intelligent tester out of the vehicle while it is still connected and lift the vehicle up while keeping the vehicle level.

      6. A000VDFE01
        *1 Overflow Tube
        *2 Overflow Plug

        Remove the overflow plug and gasket.

      7. When the fluid overflowing from the overflow tube slows to a trickle, check T/M Oil Temperature in the Data List. When the value reaches 50°C (122°F), install a new gasket and the overflow plug.

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

        Note

        If the Battery State of Charge value is 30% or less at this time, stop work, return to the Check SOC procedure and start the procedure again from the step in which the battery is charged.

    2. except Vehicles used in Middle East and China:


      1. When the indicator light (D) turns on, lift the vehicle up immediately.

        The ATF temperature range is indicated by the indicator light (D)
        Below Normal Operating Temperature Normal Operating Temperature Above Normal Operating Temperature
        OFF ON Blinking

        Note

        Perform the fluid level inspection while the indicator light is on.

      2. Remove the overflow plug. At the normal operating temperature, check the fluid amount.

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

      3. A000VDFE01
        *1 Overflow Tube
        *2 Overflow Plug

        Install a new gasket and the overflow plug.

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

  7. COMPLETE


    1. Lower the vehicle.

    2. for Vehicles used in Middle East and China:


      1. Move the shift lever to P.

    3. except Vehicles used in Middle East and China:


      1. Disconnect SST from terminals 11 (OPA) and 4 (CG) of the DLC3.

        Note

        Make sure that the vehicle is fully lowered with all 4 tires on the ground when disconnecting SST from terminals 11 (OPA) and 4 (CG) of the DLC3.

      2. Connect the intelligent tester to the DLC3.

      3. Turn the intelligent tester on.

      4. Enter the following menu: Powertrain / Hybrid Control / Data List / Line Pressure.

    4. 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.

      • 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.

    5. Turn the power switch off.

    6. Disconnect the intelligent tester from the DLC3.

    7. A000ULR

      w/ Cover:

      Lift the vehicle up and install the front center floor cover with the 3 screws, 2 bolts and clip.

      Torque:
      5.4 N*m  { 54 kgf*cm, 48 in.*lbf }