2013 Toyota Sienna LFACTORY OEM SERVICE PROCEDURE

Engine Coolant Temperature Sensor: Removal: Removal

  1. REMOVE V-BANK COVER SUB-ASSEMBLY  . Refer to REMOVAL - Step 24
  2. REMOVE NO. 1 ENGINE UNDER COVER  . Refer to REMOVAL - Step 4
  3. DRAIN ENGINE COOLANT  . Refer to REPLACEMENT - Step 3
  4. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY 

    Refer to REMOVAL

  5. REMOVE FRONT OUTER COWL TOP PANEL SUB-ASSEMBLY  . Refer to REMOVAL - Step 10
  6. REMOVE AIR CLEANER INLET COVER ASSEMBLY SEAL  See step  6
  7. REMOVE AIR CLEANER AND HOSE  See step  7
  8. REMOVE ENGINE COOLANT TEMPERATURE SENSOR 
    1. Disconnect the engine coolant temperature sensor connector.
      Fig 1: Locating Engine Coolant Temperature Sensor & Connector
      GTY295912Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using a 19 mm deep socket wrench, remove the engine coolant temperature sensor.
      Fig 2: Removing Engine Coolant Temperature Sensor Using Deep Socket Wrench
      GTY305162Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 19 mm Deep Socket Wrench
    3. Remove the gasket from the sensor.
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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.