Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Installation

INSTALLATION

PROCEDURE

1. INSTALL AIR FUEL RATIO SENSOR (for Bank 1)

HINT:

Perform "Inspection After Repair" after replacing the air fuel ratio sensor.

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(a) Using SST, install the air fuel ratio sensor to the exhaust manifold (TWC: Front Catalyst). SST: 09224-00011 Torque: Specified tightening torque : 44 N·m {449 kgf·cm, 32 ft·lbf} NOTICE: If the air fuel ratio sensor has been struck or dropped, replace it. HINT: Calculate the torque wrench reading when changing the fulcrum length of the torque wrench. Click here When using SST (fulcrum length of 30 mm (1.18 in.)) + torque wrench (fulcrum length of 255 mm (10.0 in.)): 39 N*m (398 kgf*cm, 29 ft.*lbf)

*a Torque Wrench Fulcrum Length

(b) Engage the 3 wire harness clamps.

(c) Connect the air fuel ratio sensor connector.

2. INSTALL NO. 2 ENGINE UNDER COVER

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3. INSTALL FRONT WHEEL RH

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4. INSTALL AIR FUEL RATIO SENSOR (for Bank 2)

HINT:

Perform "Inspection After Repair" after replacing the air fuel ratio sensor.

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(a) Using SST, install the air fuel ratio sensor to the exhaust manifold assembly LH (TWC: Front Catalyst). SST: 09224-00011 Torque: Specified tightening torque : 44 N·m {449 kgf·cm, 32 ft·lbf} NOTICE: If the air fuel ratio sensor has been struck or dropped, replace it. HINT: Calculate the torque wrench reading when changing the fulcrum length of the torque wrench. Click here When using SST (fulcrum length of 30 mm (1.18 in.)) + torque wrench (fulcrum length of 255 mm (10.0 in.)): 39 N*m (398 kgf*cm, 29 ft.*lbf)

*a Torque Wrench Fulcrum Length

5. INSTALL NO. 2 EXHAUST MANIFOLD HEAT INSULATOR

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6. INSTALL V-BANK COVER SUB-ASSEMBLY

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7. INSPECT FOR EXHAUST GAS LEAK

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8. PERFORM INITIALIZATION

(a) Perform "Inspection After Repair" after replacing an air fuel ratio sensor.

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