2008 Lexus IS FFACTORY OEM SERVICE PROCEDURE

Automatic Transmission Assembly: Removal

  1. REMOVE ENGINE AND TRANSMISSION 

    (See REMOVAL ).

  2. REMOVE ENGINE OIL LEVEL DIPSTICK  (See REMOVAL )
  3. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE  (See REMOVAL )
  4. REMOVE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR  (See REMOVAL )
  5. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY RH  (See REMOVAL )
  6. REMOVE NO. 3 EXHAUST MANIFOLD HEAT INSULATOR  (See REMOVAL )
  7. REMOVE STARTER ASSEMBLY  (See REMOVAL )
  8. REMOVE NO. 1 EXHAUST PIPE SUPPORT BRACKET SUB-ASSEMBLY 
    1. Remove the 2 bolts and No 1 exhaust pipe support bracket
      2. Fig 1: Locating Exhaust Pipe Support Bracket Bolts
      G05750974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. DISCONNECT OIL COOLER TUBE SUB-ASSEMBLY 
    1. Remove the 3 bolts and disconnect the bracket.
      Fig 2: Locating Oil Cooler Tube Bracket Bolts
      G05750975Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 2 clips and disconnect the oil cooler tube sub-assembly
  10. REMOVE DRIVE PLATE AND TORQUE CONVERTER CLUTCH SETTING BOLT 
    1. Turn the crankshaft to gain access to each bolt
    2. While holding the crankshaft pulley nut with a wrench, remove the 6 bolts
      Fig 3: Locating Crankshaft Pulley Nut
      G05750976Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. REMOVE REAR ENGINE MOUNTING MEMBER 
    1. Remove the 4 nuts and rear engine mounting member.
      Fig 4: Locating Rear Engine Mounting Member Nuts
      G05750977Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. REMOVE REAR ENGINE MOUNTING INSULATOR ASSEMBLY 
    1. Remove the 4 bolts and rear engine mounting insulator.
      Fig 5: Locating Rear Engine Mounting Insulator Bolts
      G05750978Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. REMOVE TRANSMISSION CONTROL SHAFT LEVER RH 
    1. Remove the nut and transmission control shaft lever with gear shifting rod
      Fig 6: Locating Transmission Control Shaft Lever With Gear Shifting Rod
      G05750979Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. SEPARATE BREATHER PLUG HOSE 
    1. Separate the breather plug hose from the transmission breather assembly.
      Fig 7: Locating Breather Plug Hose
      G05750980Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  15. DISCONNECT WIRE HARNESS AND CONNECTOR 
    1. Disconnect the park/neutral position switch connector.
    2. Remove the nut and disconnect the 2 wire harness clamps.
      Fig 8: Disconnecting Park/Neutral Position Switch Connector
      G05750981Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disconnect the transmission wire connector

      HINT:

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

    4. Remove the 2 bolts and disconnect the wire harness clamp.
      Fig 9: Disconnecting Wire Harness Clamp
      G05750982Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. REMOVE AUTOMATIC TRANSMISSION ASSEMBLY 
    1. Remove the 10 bolts.
    2. Separate and remove the automatic transmission.
      Fig 10: Locating Automatic Transmission Bolts
      G05750983Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  17. REMOVE TORQUE CONVERTER CLUTCH ASSEMBLY 
    1. Put matchmarks on the transmission case and torque converter clutch.
    2. Remove the torque converter clutch from the automatic transmission.
      Fig 11: Identifying Matchmarks Location
      G04948572Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  18. REMOVE AUTOMATIC TRANSMISSION BREATHER TUBE 
    1. Remove the bolt and automatic transmission breather tube.
    2. Disconnect the breather plug hose from the automatic transmission breather tube.
    3. Remove the O-ring from the automatic transmission breather tube
      Fig 12: Locating Automatic Transmission Breather Tube
      G05750985Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. REMOVE TRANSMISSION BREATHER ASSEMBLY 
    1. Remove the bolt and disconnect the ground wire.
    2. Separate the 2 clamps and the wire harness from the transmission breather assembly.
    3. Remove the 2 bolts and the transmission breather assembly
      Fig 13: Locating Transmission Breather Assembly And Clamps With Bolts
      G05750986Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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.

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