A25A-FKS (ENGINE MECHANICAL): CYLINDER HEAD GASKET: REMOVAL; 2021 MY RAV4 [08/2020

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during cylinder head gasket 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

*: When performing learning using the Techstream.

Click here

Battery terminal is disconnected/reconnected

Drive the vehicle until stop and start control is permitted (approximately 5 to 60 minutes)

Stop and start system

Perform steering sensor zero point calibration

Lane control system

Parking support brake system (for Gasoline model)*

Pre-collision system

Memorize steering angle neutral point

Parking assist monitor system

Panoramic view monitor system (for Gasoline model)

Reset back door close position

Power back door system (for Gasoline model)

Back door lock initialization

Power door lock control system

Replacement of ECM

Perform Vehicle Identification Number (VIN) registration

DTC P063051 is output

Code registration

Engine start function

w/ Smart Key System:

w/o Smart Key System:

for UB80E:

If transaxle compensation code read from ECM
- Perform reset memory
- Transfer transaxle compensation code
- Perform road test to allow ECM to learn

Large shift shock
Deterioration of fuel efficiency

for Initialization:

for Registration:

for UB80F:

If transaxle compensation code read from ECM
- Perform reset memory
- Transfer transaxle compensation code
- Perform road test to allow ECM to learn

Large shift shock
Deterioration of fuel efficiency

for Initialization:

for Registration:

Gas leak from exhaust system is repaired
Replacement of throttle body with motor assembly
Replacement of cam timing control motor with EDU assembly
Removal and installation of a cam timing control motor with EDU assembly
Replacement of camshaft timing gear assembly
Removal and installation of a camshaft timing gear assembly
Replacement of cylinder head sub-assembly
Replacement of camshaft (for intake or exhaust camshaft)
Replacement of camshaft timing exhaust gear assembly
Replacement of port fuel injector assembly
Replacement of direct fuel injector assembly
Replacement of fuel pump assembly (for high pressure side)
Replacement of spark plug
Replacement of ignition coil assembly
Replacement of EGR valve assembly
Replacement of knock control sensor
Replacement of air fuel ratio sensor (sensor 2)

Inspection after repair

Poor idle, etc.
Engine start function, etc.

Replacement of automatic transaxle assembly

for UB80E:

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

Large shift shock
Deterioration of fuel efficiency

for Initialization:

for Registration:

for UB80F:

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

Large shift shock
Deterioration of fuel efficiency

for Initialization:

for Registration:

Automatic transaxle fluid

ATF thermal degradation estimate reset

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

for UB60E:

for UB60F:

Suspension, tires, etc.

(The vehicle height changes because of suspension or tire replacement)

Television camera assembly optical axis (Back camera position setting)

Parking assist monitor system

Parking assist ECU initialization
Adjust steering angle

Panoramic view monitor system (for Gasoline model)

Front wheel alignment adjustment

Perform reset memory
Perform acceleration sensor zero point calibration and store system information memorization.

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

Front bumper assembly (Including removal and installation)

Front television camera view adjustment

Panoramic view monitor system (for Gasoline model)

NOTICE:

After the ignition switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the ignition switch off, be sure to wait for the time specified in the following table before disconnecting the cable from the negative (-) battery terminal.

Waiting Time before Disconnecting Cable from Negative (-) Auxiliary Battery Terminal

System Name	See Procedure
Vehicle enrolled in Toyota Audio Multimedia system or safety connect system	6 minutes
Vehicle not enrolled in Toyota Audio Multimedia system and safety connect system	1 minute

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

PROCEDURE

for 100 A, 130 A Type:
Click here
for 150 A Type:
Click here
for VALEO Made:
Click here