2008 Lexus LX 570FACTORY OEM SERVICE PROCEDURE

Throttle Body: Installation

  1. INSTALL THROTTLE BODY ASSEMBLY 
    1. Install the 2 water by-pass hoses to the throttle body.
    2. Install a new gasket to the intake air surge tank.

      HINT:

      Align the protrusion of the gasket with the groove of the intake air surge tank.

      Fig 1: Identifying Intake Air Surge Tank Gasket
      G05150009Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Install the throttle body with the 4 bolts.

      Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) 

      Fig 2: Locating Water By-Pass Hoses And Throttle Body Bolts
      G05150007Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Connect the throttle position sensor and control motor connector.
    5. Connect the 2 water by-pass hoses.
  2. INSTALL AIR CLEANER HOSE ASSEMBLY  (See INSTALLATION )
  3. ADD ENGINE COOLANT  (See REPLACEMENT )
  4. INSPECT FOR COOLANT LEAK  (See COOLING SYSTEM )
  5. CHECK THROTTLE BODY ASSEMBLY  (See ON-VEHICLE INSPECTION )
    Fig 3: Locating Water By-Pass Hoses And Control Motor Connector
    G05150006Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSTALL NO. 1 ENGINE UNDER COVER SUB-ASSEMBLY  (See INSTALLATION )
  7. INSTALL FRONT FENDER SPLASH SHIELD SUB-ASSEMBLY LH  (See INSTALLATION )
  8. INSTALL FRONT FENDER SPLASH SHIELD SUB-ASSEMBLY RH  (See INSTALLATION )
  9. INSTALL V-BANK COVER SUB-ASSEMBLY  (See INSTALLATION )
  10. INSTALL UPPER RADIATOR SUPPORT SEAL  (See INSTALLATION )
  11. INSTALL ENGINE ROOM SIDE COVER RH  (See INSTALLATION )
  12. INSTALL ENGINE ROOM SIDE COVER LH  (See INSTALLATION )
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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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