Caution / Notice / Hint

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.

NOTE:

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

Refer to PRECAUTION [10/2022 - ]

COMPONENTS (INSTALLATION)

Fig 1: Thermostat Installation Components With Torque Specifications [10/2022 - 08/2023] (1 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
1	WATER INLET WITH THERMOSTAT SUB-ASSEMBLY	16031	See step 1	-	-
2	NO. 7 WATER BY-PASS HOSE	16295	See step 2	-	-
3	NO. 2 RADIATOR HOSE	16572D	See step 3	-	-
4	INTAKE MANIFOLD	17111	-	-	-

*1	GASKET	-	-
	N.m (kgf/cm, ft.lbf): Specified torque	•	Non-reusable part

Fig 2: Thermostat Installation Components With Torque Specifications [10/2022 - 08/2023] (2 Of 2)

Callout - Procedure		Part Name Code
5	ADD ENGINE COOLANT (for Engine)	-	-	See step 5	-
6	INSPECT FOR COOLANT LEAK (for Engine)	-	-	-	See step 6
7	NO. 1 ENGINE UNDER COVER	51441	-	-	-
8	FRONT WHEEL OPENING EXTENSION PAD RH	53851D	-	-	-
9	FRONT WHEEL OPENING EXTENSION PAD LH	53852B	-	-	-

N.m (kgf/cm, ft.lbf): Specified torque