2008 Lexus IS FFACTORY OEM SERVICE PROCEDURE

Valve Body Assembly: Removal

  1. REMOVE NO. 2 ENGINE UNDER COVER 
  2. REMOVE NO. 1 EXHAUST PIPE SUPPORT BRACKET SUB-ASSEMBLY 
    1. Remove the 4 bolts, 2 nuts and No. 1 exhaust pipe support bracket
    Fig 1: Locating Exhaust Pipe Support Bracket With Bolts And Nuts
    G05750832Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. 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) 

  4. REMOVE AUTOMATIC TRANSMISSION OIL PAN SUB-ASSEMBLY 
    1. Remove the 9 bolts, oil pan and gasket from the transmission
      NOTE: Some fluid will remain in the oil pan. Remove all the pan bolts, and carefully remove the oil pan assembly.
    2. Remove the 3 transmission oil cleaner magnets from the oil pan
      Fig 2: Locating Oil Pan Bolts
      G04948406Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Examine the particles in the pan
      1. Collect any steel chips with the removed magnets Carefully look at the foreign objects and particles in the pan and on the magnets to guess the type of wear which might be found in the transmission.

        Steel (magnetic). bearing, gear and clutch plate wear

        Brass (non-magnetic) bush wear

        Fig 3: Examining Particles In Pan
        G04831117Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. REMOVE VALVE BODY OIL STRAINER ASSEMBLY 
    1. Remove the 4 bolts and oil strainer from the valve body.
      Fig 4: Locating Oil Strainer Bolts
      G04948408Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the O-ring from the oil strainer.
      Fig 5: Identifying O-Ring
      G04948409Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. REMOVE TRANSMISSION VALVE BODY ASSEMBLY 
    1. Remove the bolt, lock plate and ATF temperature sensor.
    2. Remove the O-ring from the ATF temperature sensor.
    3. Disconnect the oil pressure switch connector.
    4. Disconnect the 9 connectors from the solenoid valves.
      Fig 6: Locating Solenoid Valves Connector
      G04948410Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Remove the bolt, detent spring cover and detent spring.
      Fig 7: Locating Detent Spring Cover And Detent Spring
      G04948411Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Disconnect the lever pin from the manual valve.
      NOTE: Do not drop the check ball body and spring.
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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