Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001JZBA
Model Year Start: 2020 Model: Avalon Prod Date Range: [08/2019 - 08/2021]
Title: UA80E (AUTOMATIC TRANSMISSION / TRANSAXLE): OIL COOLER: REMOVAL; 2020 - 2021 MY Avalon [08/2019 - 08/2021]

REMOVAL

CAUTION / NOTICE / HINT

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

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

Battery terminal is disconnected/reconnected

Perform steering sensor zero point calibration

Lane Departure Alert System (w/ Steering Control)

2019 - 2021 MY Avalon [04/2018 - 08/2021]; PRE-COLLISION: PRE-COLLISION SYSTEM (for Gasoline Model): INITIALIZATION

Pre-collision System

Intelligent Clearance Sonar System*1

Lighting System (for Gasoline Model with Cornering Light)

Memorize steering angle neutral point

Parking Assist Monitor System

2019 - 2022 MY Avalon [04/2018 -        ]; PARK ASSIST / MONITORING: PARKING ASSIST MONITOR SYSTEM (for Gasoline Model): INITIALIZATION

Panoramic View Monitor System

2019 - 2022 MY Avalon [04/2018 -        ]; PARK ASSIST / MONITORING: PANORAMIC VIEW MONITOR SYSTEM (for Gasoline Model): INITIALIZATION

Replacement of ECM

Vehicle Identification Number (VIN) registration

MIL comes on

2019 - 2022 MY Avalon [04/2018 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: REGISTRATION

ECU communication ID registration (Immobiliser system)

Engine start function

2019 - 2020 MY Avalon [04/2018 - 08/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION 2021 - 2022 MY Avalon [08/2020 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

Replacement of ECM

(If transaxle compensation code read from ECM)
  • Perform reset memory*2
  • Transfer transaxle compensation code
  • Perform road test to allow ECM to learn
  • Large shift shock
  • Deterioration of fuel efficiency

2019 - 2022 MY Avalon [04/2018 -        ]; UA80E (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: INITIALIZATION for Initialization

2019 - 2022 MY Avalon [04/2018 -        ]; UA80E (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: REGISTRATION for Registration

Replacement of ECM

(If transaxle compensation code not read from ECM)
  • Perform reset memory*2
  • Reset transaxle compensation code
  • Perform road test to allow ECM to learn

Replacement of ECM

Code registration (Smart Key System (for Start Function, Gasoline Model))
  • Wireless Door Lock Control System
  • Smart Key System (for Entry Function, Gasoline Model)
  • Smart Key System (for Start Function, Gasoline Model)
  • Steering lock function

2019 - 2020 MY Avalon [04/2018 - 08/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION 2021 - 2022 MY Avalon [08/2020 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION

Replacement of automatic transaxle fluid

ATF thermal degradation estimate reset

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

2019 - 2022 MY Avalon [04/2018 -        ]; UA80E (AUTOMATIC TRANSMISSION / TRANSAXLE): AUTOMATIC TRANSAXLE SYSTEM: INITIALIZATION

  • *1: When performing learning using the Techstream.

    Click here 2019 - 2022 MY Avalon [04/2018 -        ]; PARK ASSIST / MONITORING: INTELLIGENT CLEARANCE SONAR SYSTEM (for Gasoline Model): CALIBRATION

  • *2: Not necessary when ECM replaced with new one

PROCEDURE

1. REMOVE BATTERY

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; MAINTENANCE: 2GR-FKS BATTERY: REMOVAL

2. REMOVE ECM

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; 2GR-FKS (ENGINE CONTROL): ECM: REMOVAL

3. REMOVE BATTERY CLAMP SUB-ASSEMBLY

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

4. REMOVE FRONT WHEEL LH

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; MAINTENANCE: TIRE AND WHEEL: REMOVAL

5. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

6. REMOVE FRONT WHEEL OPENING EXTENSION PAD RH

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

7. REMOVE NO. 1 ENGINE UNDER COVER

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

8. REMOVE REAR ENGINE UNDER COVER LH

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

9. REMOVE FRONT FENDER APRON SEAL LH

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

10. DRAIN ENGINE COOLANT

Click here 2019 - 2022 MY Avalon [04/2018 -        ]; MAINTENANCE: 2GR-FKS COOLANT: REPLACEMENT+

11. DRAIN AUTOMATIC TRANSAXLE FLUID

Click here 2019 - 2022 MY Avalon [04/2018 -        ]; UA80E (AUTOMATIC TRANSMISSION / TRANSAXLE): TRANSMISSION WIRE: REMOVAL+

12. DISCONNECT OUTLET NO. 1 OIL COOLER HOSE

(a) Slide the clip and disconnect the outlet No. 1 oil cooler hose from the oil cooler union sub-assembly.

HINT:

Use a container to catch any automatic transaxle fluid which flows out of the outlet No. 1 oil cooler hose and oil cooler union sub-assembly.

13. DISCONNECT INLET NO. 1 OIL COOLER HOSE

(a) Slide the clip and disconnect the inlet No. 1 oil cooler hose from the No. 1 oil cooler outlet tube sub-assembly.

HINT:

Use a container to catch any automatic transaxle fluid which flows out of the inlet No. 1 oil cooler hose and No. 1 oil cooler outlet tube sub-assembly.

14. REMOVE NO. 1 OIL COOLER TUBE SUB-ASSEMBLY WITHOUT HOSE

(a) Remove the 2 bolts to disconnect the No. 1 oil cooler tube sub-assembly without hose from the automatic transaxle case sub-assembly.

(b) Slide the clip and disconnect the inlet No. 2 oil cooler hose from the transmission oil cooler.

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.

(c) Slide the clip and disconnect the outlet No. 2 oil cooler hose to remove the No. 1 oil cooler tube sub-assembly without hose from the transmission oil cooler.

HINT:

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

(d) Slide the 4 clips and remove the inlet No. 1 oil cooler hose, inlet No. 2 oil cooler hose, outlet No. 1 oil cooler hose and outlet No. 2 oil cooler hose from the No. 1 oil cooler tube sub-assembly without hose.

*1

No. 1 Oil Cooler Tube Sub-assembly without Hose

*2

Inlet No. 1 Oil Cooler Hose

*3

Inlet No. 2 Oil Cooler Hose

*4

Outlet No. 1 Oil Cooler Hose

*5

Outlet No. 2 Oil Cooler Hose

15. DISCONNECT NO. 1 WATER BY-PASS HOSE

(a) Disengage the 3 clamps to remove the transmission breather clamp.

(b) Slide the clip and disconnect the No. 1 water by-pass hose from the transmission oil cooler.

HINT:

Use a container to catch any coolant which flows out of the No. 1 water by-pass hose and transmission oil cooler.

16. DISCONNECT WATER BY-PASS HOSE ASSEMBLY

(a) Slide the clip and disconnect the water by-pass hose assembly from the transmission oil cooler.

HINT:

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

17. REMOVE TRANSMISSION OIL COOLER

(a) Remove the 3 bolts and transmission oil cooler from the automatic transaxle case sub-assembly.

HINT:

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