2007 Lexus IS 350FACTORY OEM SERVICE PROCEDURE

Automatic Transmission Assembly: Removal

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
  2. REMOVE COOL AIR INTAKE DUCT SEAL (See  REMOVAL  ) 
  3. REMOVE ENGINE ROOM SIDE COVER LH (See  REMOVAL  ) 
  4. REMOVE ENGINE UNDER COVER 
  5. REMOVE NO. 2 ENGINE UNDER COVER 
  6. DRAIN COOLANT (See  COOLING (2GR-FSE)  ) 
  7. DRAIN AUTOMATIC TRANSMISSION FLUID 
    1. Remove the drain plug and gasket, and drain the ATF.
    2. Install a new gasket and the drain plug.

      Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf) 

  8. REMOVE NO. 1 REAR FLOOR PANEL BRACE (See  REMOVAL  ) 
  9. REMOVE FRONT CENTER FLOOR BRACE (See REMOVAL  ) 
  10. REMOVE OXYGEN SENSOR (See  REMOVAL  ) 
  11. REMOVE FRONT EXHAUST PIPE ASSEMBLY (See  REMOVAL  ) 
  12. REMOVE OUTSIDE AIR GUIDE PLATE RH (See  REMOVAL  ) 
  13. REMOVE FRONT FLOOR NO. 1 HEAT INSULATOR (See  REMOVAL  ) 
  14. REMOVE PROPELLER SHAFT WITH CENTER BEARING ASSEMBLY (See  REMOVAL  ) 
  15. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY LH (See  REMOVAL  ) 
  16. REMOVE STARTER ASSEMBLY (See  REMOVAL  ) 
  17. REMOVE FLYWHEEL HOUSING SIDE COVER 
    1. Remove the flywheel housing side cover from the engine assembly.
      Fig 1: Identifying Flywheel Housing Side Cover
      G05317048Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  18. REMOVE DRIVE PLATE & TORQUE CONVERTER CLUTCH SETTING BOLT 
    1. Turn the crankshaft to gain access to each bolt.
      Fig 2: Identifying Drive Plate Bolts
      G05317049Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Hold the crankshaft pulley nut with a wrench and remove the 6 torque converter clutch setting bolts.
  19. SEPARATE FLOOR SHIFT GEAR SHIFTING ROD SUB-ASSEMBLY 
    1. Set the shift lever to the neutral position.
    2. Remove the nut, and separate the floor shift gear shifting rod sub-assembly.
      Fig 3: Identifying Floor Shift Gear Shifting Rod Sub-Assembly With Nut
      G05317050Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  20. SUPPORT AUTOMATIC TRANSMISSION ASSEMBLY 
    1. Support the automatic transmission assembly with a transmission jack.
      Fig 4: Supporting Automatic Transmission Assembly With Transmission Jack
      G05317051Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  21. REMOVE ENGINE REAR MOUNTING MEMBER 
    1. Remove the 4 bolts, and separate the engine rear mounting member from the body.
      Fig 5: Identifying Engine Rear Mounting Member From Body
      G05317052Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 4 nuts and engine rear mounting member from the automatic transmission assembly.
      Fig 6: Identifying Engine Rear Mounting Member To Automatic Transmission Assembly
      G05317053Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  22. SEPARATE CONNECTOR 
    1. Remove the bolt and earth wire.
      Fig 7: Identifying Earth Wire Bolt
      G05317054Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Tilt down the automatic transmission assembly.
      Fig 8: Tilting Down Automatic Transmission Assembly
      G05317055Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disconnect the park/neutral position switch connector, transmission wire connector, and 2 transmission revolution sensor connectors.
      Fig 9: Identifying Park/Neutral Start Switch Connector And Transmission Wire Connector
      G05317056Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      Disengage the claw, press down the lever, and then disconnect the transmission wire connector.

      Fig 10: Identifying Lever
      G05317057Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  23. SEPARATE WIRE HARNESS 
    1. Remove the 2 bolts and separate the wire harness clamps from the automatic transmission assembly.
      Fig 11: Identifying Wire Harness Clamps
      G05317058Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  24. SEPARATE WATER BYPASS HOSE 
    1. Remove the bolt and water bypass hose clamp.
    2. Separate the 2 water bypass hoses from the transmission oil cooler.
      NOTE: Use a container to catch any coolant which flows out of the water bypass hoses.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.