A25A-FKS (COOLING): THERMOSTAT: REMOVAL; 2023 MY RAV4 [10/2022

Last Modified: 05-08-2025	6.11:8.1.0	Doc ID: RM1000000026TI5
Model Year Start: 2023	Model: RAV4	Prod Date Range: [10/2022 - 10/2023]
Title: A25A-FKS (COOLING): THERMOSTAT: REMOVAL; 2023 MY RAV4 [10/2022 - 10/2023]

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 water inlet with thermostat sub-assembly 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
*: 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
	Reset back door close position	Power back door system (for Gasoline model)
	Back door lock initialization	Power door lock control system
Replacement of throttle body with motor assembly Replacement of EGR valve assembly Gas leaks from exhaust system	Inspection after repair	Poor idle, etc. Engine start function, etc.

NOTICE:

After the ignition switch is turned off, the audio and visual system records various types of memory and settings. As a result, after turning the ignition switch off, make sure to wait at least 2 minutes before disconnecting the cable from the negative (-) auxiliary battery terminal.
When the cable is disconnected from the negative (-) auxiliary battery terminal and the security lock setting has been enabled, multi-display operations will be disabled upon next startup unless the password is entered. Be sure to check the security lock setting before disconnecting the cable from the negative (-) auxiliary battery terminal.
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

1. DRAIN ENGINE COOLANT

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2. REMOVE INTAKE MANIFOLD

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3. REMOVE GENERATOR ASSEMBLY

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

4. DISCONNECT NO. 2 RADIATOR HOSE

(a) Slide the clip and disconnect the No. 2 radiator hose from the water inlet with thermostat sub-assembly.

5. REMOVE WATER INLET WITH THERMOSTAT SUB-ASSEMBLY

(a) Disconnect the water inlet with thermostat sub-assembly connector.

(b) Slide the clip and disconnect the No. 7 water by-pass hose from the water inlet with thermostat sub-assembly.

NOTICE:

Do not apply force to the water inlet with thermostat sub-assembly when disconnecting the No. 7 water by-pass hose.
Do not damage the water inlet with thermostat sub-assembly.

HINT:

When disconnecting the No. 7 water by-pass hose, slide the clip, rotate the hose and pull it straight off the pipe.

(d) Remove the gasket from the water inlet with thermostat sub-assembly.