2011 Lexus IS FFACTORY OEM SERVICE PROCEDURE

Throttle Body: Removal: Removal

  1. REMOVE ENGINE UNDER COVER 
  2. DRAIN ENGINE COOLANT  . Refer to REPLACEMENT - Step 3
  3. REMOVE V-BANK COVER SUB-ASSEMBLY  . Refer to REMOVAL - Step 2
  4. REMOVE AIR CLEANER CAP SUB-ASSEMBLY 
    1. Loosen the 2 hose clamps and separate the 2 ventilation hoses.
      Fig 1: Identifying Ventilation Hoses And Hose Clamps
      GTY148747Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the mass air flow meter connector and separate the wire harness clamp.
      Fig 2: Identifying Mass Air Flow Meter Connector And Wire Harness Clamp
      GTY143250Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Loosen the hose clamp and separate the air cleaner hose.
      Fig 3: Identifying Air Cleaner Hose Clamp
      GTY134204Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Unlock the 2 clamps and remove the air cleaner cap sub-assembly.
      Fig 4: Identifying Air Cleaner Cap Sub-Assembly Clamps
      GTY148748Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. REMOVE THROTTLE BODY ASSEMBLY 
    1. Disconnect the throttle body connector.
      Fig 5: Identifying Throttle Body Connector
      GTY143314Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Loosen the hose clamp and separate the No. 5 water by-pass hose.
      Fig 6: Identifying No. 5 Water By-Pass Hose & Hose Clamp
      GTY126897Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Loosen the hose clamp and separate the No. 4 water by-pass hose.
      Fig 7: Identifying No. 4 Water By-Pass Hose & Hose Clamp
      GTY126734Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the 2 bolts and 2 nuts.
      Fig 8: Identifying Throttle Body Assembly Bolts And Nuts
      GTY148749Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Using a "TORX" socket E6, remove the 2 stud bolts and throttle body assembly.
      Fig 9: Identifying Throttle Body Assembly Stud Bolts
      GTY142389Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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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.