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Home >> Toyota >> 2021 >> Mirai XLE >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System - Service Information (1 Of 2) >> Ion EXCHANGER >> Removal [11/2020 - 11/2021] >> Procedure

Removal [11/2020 - 11/2021]: Procedure

  1. PRECAUTION 
    GTY993405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:

    After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal.

    Refer to BEFORE DISCONNECTING BATTERY [11/2020 - 11/2021]
  2. CAUTIONS FOR COOLANT (TOYOTA GENUINE FC STACK COOLANT (Pre-mixed)) 

    Refer to PRECAUTION [11/2020 - ] 

  3. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL 

    Refer to REMOVAL [11/2020 - 11/2021]

  4. REMOVE FRONT COMPARTMENT UNDER COVER 

    Refer to PROCEDURE - Step 18

  5. REMOVE FRONT LOWER SUSPENSION MEMBER PROTECTOR 

    Refer to PROCEDURE - Step 19

  6. REMOVE FRONT COMPARTMENT UNDER COVER ASSEMBLY 

    Refer to PROCEDURE - Step 20

  7. REMOVE FC STACK COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 8

  8. REMOVE UPPER RADIATOR SUPPORT SEAL 

    Refer to PROCEDURE - Step 5

  9. REMOVE RADIATOR COVER PLATE 

    Refer to PROCEDURE - Step 6

  10. REMOVE LOWER RADIATOR AIR DEFLECTOR 

    Refer to PROCEDURE - Step 7

  11. DRAIN COOLANT (TOYOTA GENUINE FC STACK COOLANT (Pre-mixed)) 

    See step  6

  12. DISCONNECT NO. 9 FC RADIATOR HOSE 
    1. GTY1003962Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Slide the hose clip and disconnect the No. 9 FC radiator hose from the FC cooling ion water exchanger assembly.
      2. To prevent contamination by foreign matter, cover the connecting portions of the No. 9 FC radiator hose and FC cooling ion water exchanger assembly with plastic bags.
  13. DISCONNECT NO. 13 FC RADIATOR HOSE 
    1. GTY1004062Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Slide the hose clip and disconnect the No. 13 FC radiator hose from the FC cooling ion water exchanger assembly.
      2. To prevent contamination by foreign matter, cover the connecting portions of the No. 13 FC radiator hose and FC cooling ion water exchanger assembly with plastic bags.
  14. DISCONNECT RADIATOR TO RESERVE TANK HOSE 
    1. GTY1004205Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  15. DISCONNECT NO. 4 FC INVERTER COOLING PIPE 
    1. GTY1003626Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. REMOVE FC COOLING WATER ION EXCHANGER BRACKET 
    1. GTY1004777Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  17. REMOVE FC COOLING WATER ION EXCHANGER ASSEMBLY 
    1. GTY1002983Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the 3 bolts.
      2. Detach the clamp and remove the FC cooling ion water exchanger assembly.
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