2021 Lexus RC F BaseFACTORY OEM SERVICE PROCEDURE

Removal [09/2014 - ]: Procedure

  1. REMOVE ENGINE ASSEMBLY WITH TRANSMISSION 

    Refer to REMOVAL [09/2014 - 05/2018] , or refer to REMOVAL [05/2018 - 03/2019] , or refer to REMOVAL [03/2019 - ]

  2. REMOVE AIR FUEL RATIO SENSOR (for Bank 1) 
    1. Disconnect the air fuel ratio sensor connector.
      GTY511575Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disengage the wire harness clamp.
    3. Using SST, remove the air fuel ratio sensor from the exhaust manifold sub-assembly LH.
      • SST: 09224-00010 
      NOTE:

      If the air fuel ratio sensor has been struck or dropped, replace it.

  3. REMOVE AIR FUEL RATIO SENSOR (for Bank 2) 
    1. Disconnect the air fuel ratio sensor connector.
      GTY515934Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disengage the wire harness clamp.
    3. Using SST, remove the air fuel ratio sensor from the exhaust manifold sub-assembly RH.
      • SST: 09224-00010 
      NOTE:

      If the air fuel ratio sensor has been struck or dropped, replace it.

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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