Removal [10/2022 - 08/2023]: Procedure

WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.

REMOVE FRONT WHEEL OPENING EXTENSION PAD LH
Refer to PROCEDURE - Step 7
REMOVE FRONT WHEEL OPENING EXTENSION PAD RH
Refer to PROCEDURE - Step 8
REMOVE NO. 1 ENGINE UNDER COVER
Refer to PROCEDURE - Step 9
DRAIN ENGINE COOLANT (for Engine)
Refer to PROCEDURE - Step 1
REMOVE INTAKE MANIFOLD
Refer to REMOVAL [10/2022 - 08/2023]
DISCONNECT NO. 2 RADIATOR HOSE
Refer to PROCEDURE - Step 27

DISCONNECT NO. 7 WATER BY-PASS HOSE

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Slide the clip and disconnect the No. 7 water by-pass hose from the water inlet with thermostat sub-assembly.
NOTE:
- 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.

REMOVE WATER INLET WITH THERMOSTAT SUB-ASSEMBLY

Using an 8 mm socket wrench, remove the 2 bolts and water inlet with thermostat sub-assembly.
Remove the gasket from the water inlet with thermostat sub-assembly.