Thermostat Removal

Engine. Lexus Gs430, Gs300. Uzs190 Grs190
3Gr-Fse Cooling. Lexus Gs430, Gs300. Uzs190 Grs190

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

  2. REMOVE ENGINE UNDER COVER

  3. REMOVE COOL AIR INTAKE DUCT SEAL

  4. REMOVE NO. 1 AIR CLEANER INLET

  5. DRAIN ENGINE COOLANT

  6. REMOVE V-BANK COVER SUB-ASSEMBLY

  7. DISCONNECT RADIATOR HOSE OUTLET

  8. REMOVE WATER INLET SUB-ASSEMBLY WITH THERMOSTAT

Thermostat -- Removal



1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.


2. REMOVE ENGINE UNDER COVER


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Using a clip remover, remove the 3 clips.

  1. Remove the 10 screws and under cover.



3. REMOVE COOL AIR INTAKE DUCT SEAL


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Using a clip remover, remove the 7 clips and duct seal.



4. REMOVE NO. 1 AIR CLEANER INLET

  1. Remove the bolt and inlet.



5. DRAIN ENGINE COOLANT
CAUTION:
Do not remove the radiator cap while the engine and radiator are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.

  1. Remove the radiator cap and reservoir cap.



  1. Loosen the radiator drain cock plug and 2 cylinder block drain cock plugs. Then drain the coolant.

    HINT:
    Collect the coolant in a container and dispose of it according to the regulations in your area.


    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fse Cooling.Cooling System.Thermostat Removal



6. REMOVE V-BANK COVER SUB-ASSEMBLY

  1. Remove the 2 nuts and cover.



7. DISCONNECT RADIATOR HOSE OUTLET

  1. Disconnect the hose from the water inlet with thermostat.



8. REMOVE WATER INLET SUB-ASSEMBLY WITH THERMOSTAT


Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fse Cooling.Cooling System.Thermostat Removal

  1. Remove the 3 nuts, water inlet with thermostat and gasket.