Genuine Toyota Highlander Oxygen Sensor

Toyota Highlander Oxygen Sensor Parts Questions & Answers

• Oxygen Sensor No.2
  89465-0E020
  Q: What precautions and steps are involved in servicing oxygen sensors, including replacement procedures for both upstream and downstream sensors in Lexus RX330 and Toyota Highlander?

  A: Handle oxygen sensors with care as damage to the attached pigtail and electrical connector can render them useless. Avoid contaminants and cleaning solvents. For replacements, 2008 and later models have the air-fuel ratio sensor which is the upstream sensor, and the oxygen sensor, which is the downstream sensor. For four-cylinder models, disconnect the battery cable, locate the sensor in the exhaust manifold, disconnect the connector, and unscrew the sensor using an oxygen sensor socket. For V6 models, disconnect the battery cable, disconnect the sensor connector, raise the vehicle, and unscrew the sensor. Always apply anti-seize compound to the sensor threads during installation and tighten to the specified torque.