2021 Lexus GX 460 BaseFACTORY OEM SERVICE PROCEDURE

Removal [08/2015 - ]: Procedure

  1. REMOVE LOWER FRONT BUMPER COVER 

    Refer to PROCEDURE - Step 7 [08/2015 - 08/2020] , or refer to PROCEDURE - Step 7 [08/2020 - ]

  2. REMOVE NO. 1 ENGINE UNDER COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 8 [08/2015 - 08/2020] , or refer to PROCEDURE - Step 8 [08/2020 - ]

  3. DRAIN ENGINE COOLANT 

    Refer to PROCEDURE - Step 5

  4. REMOVE V-BANK COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 16 [08/2015 - 08/2020] , or refer to PROCEDURE - Step 16 [08/2020 - ]

  5. REMOVE AIR CLEANER CAP AND HOSE 

    Refer to PROCEDURE - Step 24 [08/2015 - 08/2020] , or refer to PROCEDURE - Step 24 [08/2020 - ]

  6. REMOVE THROTTLE BODY ASSEMBLY 
    1. Disconnect the No. 4 water by-pass hose and No. 12 water by-pass hose.
      GTY275118Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the throttle position sensor and control motor connector.
    3. Remove the 4 bolts, throttle body and gasket.
      GTY275114Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the No. 12 water by-pass hose from the throttle body.
      GTY275116Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Remove the No. 4 water by-pass hose from the throttle body.
      GTY286395Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

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.