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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 43 (Automatic Transmission System (UA80E) - Service Information (1 Of 2)) >> Oil Cooler >> Removal [12/2019 - 09/2020] >> Procedure

Removal [12/2019 - 09/2020]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH 

    Refer to PROCEDURE - Step 8

  2. REMOVE FRONT WHEEL OPENING EXTENSION PAD RH 

    Refer to PROCEDURE - Step 9

  3. REMOVE NO. 1 ENGINE UNDER COVER 

    Refer to PROCEDURE - Step 10

  4. REMOVE REAR ENGINE UNDER COVER LH 

    Refer to PROCEDURE - Step 11

  5. REMOVE FRONT FENDER APRON SEAL LH 

    Refer to PROCEDURE - Step 15

  6. REMOVE COOL AIR INTAKE DUCT SEAL 

    Refer to PROCEDURE - Step 1

  7. REMOVE INLET AIR CLEANER ASSEMBLY 

    Refer to PROCEDURE - Step 24

  8. REMOVE AIR CLEANER ASSEMBLY WITH AIR CLEANER HOSE 

    Refer to PROCEDURE - Step 25

  9. REMOVE BATTERY 

    Refer to REMOVAL [12/2019 - 10/2022]

  10. REMOVE BATTERY CLAMP SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 30

  11. DRAIN ENGINE COOLANT 

    Refer to PROCEDURE - Step 1

  12. DRAIN AUTOMATIC TRANSAXLE FLUID 

    See step  3

  13. REMOVE TRANSMISSION BREATHER CLAMP 
    1. Disengage the 3 clamps to remove the transmission breather clamp.
      GTY917221Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. DISCONNECT WATER BY-PASS HOSE ASSEMBLY 
    1. Slide the 2 clips and disconnect the water by-pass hose assembly from the transmission oil cooler.
      GTY943610Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      Use a container to catch any coolant which flows out of the water by-pass hose assembly and transmission oil cooler.

  15. DISCONNECT INLET NO. 2 OIL COOLER HOSE 
    1. Slide the clip and disconnect the inlet No. 2 oil cooler hose from the transmission oil cooler.
      GTY917220Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      Use a container to catch any automatic transaxle fluid which flows out of the inlet No. 2 oil cooler hose and transmission oil cooler.

  16. DISCONNECT OUTLET NO. 3 OIL COOLER HOSE 
    1. Slide the clip and disconnect the outlet No. 3 oil cooler hose from the transmission oil cooler.
      GTY917215Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      Use a container to catch any automatic transaxle fluid which flows out of the outlet No. 3 oil cooler hose and transmission oil cooler.

  17. REMOVE TRANSMISSION OIL COOLER 
    1. Disengage the wire harness clamp.
      GTY917256Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 3 bolts and transmission oil cooler from the automatic transaxle case sub-assembly.
      GTY917214Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      Use a container to catch any coolant and automatic transaxle fluid which flow out of the transmission oil cooler.

  18. DISCONNECT NO. 3 TRANSMISSION OIL COOLER HOSE 

    HINT: 

    Perform this procedure only when replacement of the No. 1 oil cooler tube sub-assembly without hose is necessary.

    1. Slide the clip and disconnect the No. 3 transmission oil cooler hose from the No. 1 oil cooler tube sub-assembly without hose.
      GTY917213Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. REMOVE NO. 1 OIL COOLER TUBE SUB-ASSEMBLY WITHOUT HOSE 

    HINT: 

    Perform this procedure only when replacement of the No. 1 oil cooler tube sub-assembly without hose is necessary.

    1. Slide the clip and disconnect the inlet No. 1 oil cooler hose from the oil cooler outlet union or elbow.
      GTY879795Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Inlet No. 1 Oil Cooler Hose

      HINT: 

      Use a container to catch any automatic transaxle fluid which flows out of the inlet No. 1 oil cooler hose and oil cooler outlet union or elbow.

    2. Remove the 2 bolts and No. 1 oil cooler tube sub-assembly without hose from the automatic transaxle case sub-assembly.
    3. Slide the 3 clips and remove the inlet No. 1 oil cooler hose, inlet No. 2 oil cooler hose and outlet No. 3 oil cooler hose from the No. 1 oil cooler tube sub-assembly without hose.
      GTY872626Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Inlet No. 1 Oil Cooler Hose
      *2 Inlet No. 2 Oil Cooler Hose
      *3 Outlet No. 3 Oil Cooler Hose
      *4 No. 1 Oil Cooler Tube Sub-assembly without Hose
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