Heated Oxygen Sensor (3MZ-FE): Replacement

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

DISCONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL)
REMOVE HEATED OXYGEN SENSOR
1. Disconnect the 2 heated oxygen sensor connectors.
  
  Fig 1: Disconnecting 2 Heated Oxygen Sensor Connectors
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Using SST, remove the 2 heated oxygen sensors.
  SST 09224-00010
  
  Fig 2: Using SST, Removing 2 Heated Oxygen Sensors
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL HEATED OXYGEN SENSOR
1. Using SST, remove the 2 heated oxygen sensors.
  SST 09224-00010
  
  Fig 3: Installing Heated Oxygen Sensor
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Torque: 44 N.m (449 kgf.cm, 32 ft.lbf)
2. Connect the 2 heated oxygen sensor connectors.
DISCONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL)
Torque: 5.4 N.m (55 kgf.cm, 48 in.lbf)
CHECK FOR EXHAUST GAS LEAKS
SYSTEM INITIALIZATION (See PRECAUTION )