Removal [10/2017 - 09/2020]: Procedure
WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2024 Lexus IS 350, 2024 Lexus IS 300, 2023 Lexus IS 350, 2023 Lexus IS 300, and 2022 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.
- REMOVE POWER STEERING ECU ASSEMBLY
Refer to REMOVAL [04/2013 - 09/2020]
- REMOVE BATTERY TRAY
- Remove the 3 bolts and battery tray.
 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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- DISCONNECT NO. 3 ENGINE ROOM RELAY BLOCK
- Remove the bolt and nut, and disconnect the No. 3 engine room relay block from the vehicle body.
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- REMOVE AIR FUEL RATIO SENSOR (for Bank 1)
- Disengage the 2 clamps and disconnect the air fuel ratio sensor connector.
 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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- Using SST, remove the air fuel ratio sensor from the exhaust manifold sub-assembly RH (TWC: Front Catalyst).
 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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NOTE:
If the air fuel ratio sensor has been struck or dropped, replace it.
- REMOVE AIR FUEL RATIO SENSOR (for Bank 2)
- Disengage the clamp and disconnect the air fuel ratio sensor connector.
 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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- Using SST, remove the air fuel ratio sensor from the exhaust manifold sub-assembly LH (TWC: Front Catalyst).
 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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NOTE:
If the air fuel ratio sensor has been struck or dropped, replace it.