Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000002B9WV
Model Year Start: 2023 Model: Corolla Hatchback Prod Date Range: [03/2023 -           ]
Title: K120 / K121 (CVT): OIL COOLER: REMOVAL; 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed, installed, or replaced during transmission oil cooler removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replacement Part or Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

Replacement of CVT fluid

ATF thermal degradation estimate reset

The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly

for K120: 2023 - 2025 MY Corolla Corolla Hatchback [11/2022 -        ]; K120 / K121 (CVT): K120 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: INITIALIZATION

for K121: 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): K121 CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: INITIALIZATION

PROCEDURE

1. REMOVE NO. 1 ENGINE UNDER COVER ASSEMBLY

Click here 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; M20A-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

2. REMOVE REAR ENGINE UNDER COVER LH

Click here 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; M20A-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

3. DRAIN ENGINE COOLANT (for Fully Sealed Type)

Click here 2020 - 2025 MY Corolla Corolla Hatchback [09/2019 -        ]; MAINTENANCE: M20A-FKS COOLANT: REPLACEMENT+

4. DRAIN ENGINE COOLANT (for Non-Fully Sealed Type)

Click here 2020 - 2025 MY Corolla Corolla Hatchback [09/2019 -        ]; MAINTENANCE: M20A-FKS COOLANT: REPLACEMENT+

5. DRAIN CONTINUOUSLY VARIABLE TRANSAXLE FLUID

Click here 2023 - 2025 MY Corolla Corolla Hatchback [03/2023 -        ]; K120 / K121 (CVT): OIL PAN: REMOVAL+

6. DISCONNECT NO. 2 WATER BY-PASS HOSE

(a) Slide the clip and disconnect the No. 2 water by-pass hose from the transmission oil cooler.

7. DISCONNECT INLET WATER HOSE

(a) Slide the clip and disconnect the inlet water hose from the transmission oil cooler.

8. REMOVE TRANSMISSION OIL COOLER

(a) Remove the 3 bolts and transmission oil cooler from the transaxle housing.

(b) Remove the 2 O-rings from the transaxle housing.