2008 Lexus ES 350FACTORY OEM SERVICE PROCEDURE

Engine Coolant Temperature Sensor: Removal

  1. REMOVE ENGINE UNDER COVER LH 
  2. REMOVE ENGINE UNDER COVER RH 
  3. DRAIN ENGINE COOLANT  (See Drain or Add coolant under ON-VEHICLE INSPECTION )
  4. REMOVE V-BANK COVER SUB-ASSEMBLY  (See REMOVAL )
  5. REMOVE COOL AIR INTAKE DUCT SEAL  (See REMOVAL )
  6. REMOVE ENGINE ROOM SIDE COVER LH  (See REMOVAL )
  7. REMOVE AIR CLEANER INLET ASSEMBLY  (See REMOVAL )
  8. REMOVE AIR CLEANER CAP SUB-ASSEMBLY (See  REMOVAL   ) 
  9. REMOVE AIR CLEANER CASE SUB-ASSEMBLY  (See REMOVAL )
  10. REMOVE NO. 1 AIR CLEANER INLET  (See REMOVAL )
  11. REMOVE ENGINE COOLANT TEMPERATURE SENSOR 
    1. Remove the engine coolant temperature sensor connector.
    2. Remove the engine coolant temperature sensor.
    3. Remove the gasket from the engine coolant temperature sensor.
      Fig 1: Locating Engine Coolant Temperature Sensor Connector
      G04973881Courtesy 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.