G16E-GTS (ENGINE MECHANICAL): REAR CRANKSHAFT OIL SEAL: REMOVAL; 2025 MY GR Corolla [09/2024

CAUTION / NOTICE / HINT

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

Necessary Procedure After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

*1:w/ Steering Lock Function

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

*3: If transaxle compensation code read from ECM

*4: If transaxle compensation code not read from ECM

Replacement of ECM

Perform Vehicle Identification Number (VIN) or frame number registration

MIL illuminates

ECU configuration

Update ECU security key

Vehicle Control History (RoB) are stored

Heavy Knock History

ECU communication ID registration (Immobiliser system)

Engine start function

Code registration (Smart Key System (for Gasoline Model, Start Function))

Wireless Door Lock Control System (for Gasoline Model with Smart Key System)
Smart Key System (for Gasoline Model, Entry Function)
Smart Key System (for Gasoline Model, Start Function)
Steering lock function*1

for UC80F

Perform reset memory*2
Transfer transaxle compensation code*3
Reset transaxle compensation code*4
Perform road test to allow ECM to learn

Large shift shock
Deterioration of fuel efficiency

Initialization:

Registration:

Replacement of engine assembly
Gas leaks from exhaust system is repaired

Inspection After Repair

Poor idle, etc.
Engine start function, etc.

Automatic transaxle assembly

Perform reset memory
Input transaxle compensation code into ECM
Perform road test to allow ECM to learn

Large shift shock
Deterioration of fuel efficiency

Initialization:

Registration:

Automatic transaxle fluid

ATF thermal degradation estimate reset

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

Front wheel alignment adjustment

Perform "Reset Memory"
Perform "Calibration"

VSC is disabled or malfunctions
DTCs are output
Slip indicator light illuminates
ABS warning light illuminates

Tire

ECU Data Initialization (When performing tire replacement after RoB code X2104 is output)

Active Torque Split AWD System

NOTICE:

This procedure includes the removal of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts.

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2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 - ]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION

HINT:

When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

Learning completes when vehicle is driven

Effect/Inoperative Function When Necessary Procedures are not Performed	Necessary Procedures	Link
Front Camera System	Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more.

Learning completes when vehicle is operated normally

Effect/Inoperative Function When Necessary Procedures are not Performed	Necessary Procedures	Link
Power door lock control system Back door opener	Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.

PROCEDURE

(a) Using height adjustment attachments and plate lift attachments, place the engine assembly on a flat level surface.

NOTICE:

Using height adjustment attachments and plate lift attachments, keep the engine assembly level.
To prevent the oil pan sub-assembly from deforming, do not place any attachments under the oil pan sub-assembly of the engine assembly.
Using an engine sling device and engine lift, secure the engine assembly before servicing.

(a) Using height adjustment attachments and plate lift attachments, place the engine assembly on a flat level surface.

NOTICE:

Using height adjustment attachments and plate lift attachments, keep the engine assembly level.
To prevent the oil pan sub-assembly from deforming, do not place any attachments under the oil pan sub-assembly of the engine assembly.
Using an engine sling device and engine lift, secure the engine assembly before servicing.

Do not damage the surface of the rear engine oil seal press fit hole or the crankshaft.