Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2011 Lexus RX 350 FWDFACTORY OEM SERVICE PROCEDURE

Heated Oxygen Sensor: Removal: Removal

REMOVE FRONT FLOOR COVER LH . Refer to REMOVAL - Step 2
REMOVE OXYGEN SENSOR (for Bank 1 Sensor 2)
1. Disconnect the 3 clamps and oxygen sensor connector (for Bank 1 Sensor 2).
  
  Fig 1: Identifying 3 Clamps And Oxygen Sensor Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Remove the wire harness clamp bracket.
  
  Fig 2: Identifying Wire Harness Clamp Bracket
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Using SST, remove the oxygen sensor from the No. 3 front exhaust pipe sub-assembly.
  
  Fig 3: SST, Remove The Oxygen Sensor
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  - SST: 09224-00010
REMOVE NO. 3 FRONT EXHAUST PIPE SUB-ASSEMBLY
1. Remove the 4 bolts, 2 nuts, 2 compression springs and No. 3 front exhaust pipe sub-assembly.
  
  Fig 4: Identifying 4 Bolts, 2 Nuts, 2 Compression Springs And No. 3 Front Exhaust Pipe Sub-Assembly
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Remove the 3 gaskets from the No. 3 front exhaust pipe sub-assembly.
REMOVE FRONT EXHAUST PIPE ASSEMBLY . Refer to REMOVAL - Step 7
REMOVE NO. 2 OXYGEN SENSOR (for Bank 2 Sensor 2)
1. Using SST, remove the No. 2 oxygen sensor from the front exhaust pipe assembly.
  
  Fig 5: Removing Oxygen Sensor Using SST
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  - SST: 09224-00010

Chapter Navigation

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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.