Caution / Notice / Hint

WARNING: This page is about a different car, the 2025 Lexus NX 250, 2024 Lexus NX 250, 2023 Lexus NX 250, and 2022 Lexus NX 250. However, it is still accessible from the selected car via links, so may be relevant.

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during EGR valve 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	Link
Replacement of EGR valve assembly Gas leak from exhaust system is repaired	Inspection after repair	Poor idle, etc. Engine start function, etc.	Refer to INITIALIZATION [11/2021 - ]

NOTE:

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

Refer to PRECAUTION [11/2021 - ]

COMPONENTS (REMOVAL)

Fig 1: EGR Valve Removal Components

Callout - Procedure		Part Name Code
1	EGR COOLER ASSEMBLY	25680	-	-	-
2	ENGINE WIRE	-	-	-	-
3	NO. 1 EGR PIPE SUB-ASSEMBLY	25601	See step 3	-	-
4	EGR VALVE ADAPTER GASKET	25629	-	-	-
5	EGR INLET GASKET	25628	-	-	-
6	NO. 8 WATER BY-PASS HOSE	16296	-	-	-
7	NO. 4 WATER BY-PASS HOSE	16281	-	-	-
8	EGR VALVE ASSEMBLY	25620	See step 8	-	-

•

Non-reusable part