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.

2009 Toyota Matrix S, AWDFACTORY OEM SERVICE PROCEDURE

Heated Oxygen Sensor: Removal

REMOVE HEATED OXYGEN SENSOR (for 4WD)
1. Disconnect the heated oxygen sensor connector.
2. Separate the wire harness grommet.
3. Using SST, remove the heated oxygen sensor.
  SST 09224-00010
Fig 1: Locating Heated Oxygen Sensor
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE HEATED OXYGEN SENSOR (for 2WD)
1. Disconnect the heated oxygen sensor connector.
  
  Fig 2: Locating Heated Oxygen Sensor Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Using SST, remove the heated oxygen sensor.
  SST 09224-00010
Fig 3: Removing Heated Oxygen Sensor
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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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.