Installation [11/2021 - ]: Procedure
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.
- LOOSEN NO. 1 EGR PIPE SUB-ASSEMBLY
- Using an 8 mm socket wrench, loosen the 4 bolts of the No. 1 EGR pipe sub-assembly.
HINT:
- As the bolts of the No. 1 EGR pipe sub-assembly are only to be loosened, it is not necessary to replace the EGR inlet gasket and EGR valve adapter gasket.
- If the No. 1 EGR pipe sub-assembly is removed, it is necessary to replace the EGR inlet gasket and EGR valve adapter gasket with new ones.
- Using an 8 mm socket wrench, loosen the 4 bolts of the No. 1 EGR pipe sub-assembly.
- LOOSEN EGR VALVE ASSEMBLY
- INSTALL NO. 1 EGR COOLER GASKET
- INSTALL EGR VALVE GASKET
- INSTALL EGR COOLER ASSEMBLY
-
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
*a Bolt or Nut - - - for Type A:
Temporarily install the EGR cooler assembly to the cylinder head sub-assembly and EGR valve assembly with the 3 bolts and 2 nuts.
- for Type A:
Tighten the 3 bolts and 2 nuts in the order shown in the illustration.
Torque: 24 N.m (245 kgf/cm, 18 ft.lbf)
- for Type B:
Temporarily install the EGR cooler assembly to the cylinder head sub-assembly and EGR valve assembly with the 2 bolts and 3 nuts.
- for Type B:
Tighten the 2 bolts and 3 nuts in the order shown in the illustration.
Torque: 24 N.m (245 kgf/cm, 18 ft.lbf)
- for Type A:
-
- CONNECT NO. 4 WATER BY-PASS HOSE
- CONNECT NO. 3 WATER BY-PASS HOSE
- TIGHTEN EGR VALVE ASSEMBLY
- TIGHTEN NO. 1 EGR PIPE SUB-ASSEMBLY
- INSTALL AIR CLEANER ASSEMBLY WITH AIR CLEANER HOSE
Refer to PROCEDURE - Step 5 - CONNECT NO. 2 VENTILATION HOSE
Refer to PROCEDURE - Step 6 - CONNECT VACUUM HOSE
- INSTALL INLET AIR CLEANER ASSEMBLY
Refer to PROCEDURE - Step 8 - INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY
Refer to PROCEDURE - Step 48 - INSTALL RADIATOR UPPER AIR GUIDE PLATE
- ADD ENGINE COOLANT (for Engine)
Refer to PROCEDURE - Step 5
- INSPECT FOR COOLANT LEAK (for Engine)
Refer to PROCEDURE - Step 1 - INSPECT FOR EXHAUST GAS LEAK
Refer to PROCEDURE - Step 4