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 exhaust manifold (TWC: Front Catalyst) 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 |
|---|---|---|---|
|
Perform Inspection After Repair |
|
Refer to INITIALIZATION [11/2021 - ] |
WARNING:
COMPONENTS (REMOVAL)
| Callout - Procedure | Part Name Code | ||||
|---|---|---|---|---|---|
| 1 | NO. 2 ENGINE UNDER COVER ASSEMBLY | 51420 | - | - | - |
| 2 | FRONT EXHAUST PIPE ASSEMBLY (TWC: Rear Catalyst) | 17410 | See step 2 | - | - |
| 3 | HOOD TO FRONT FENDER SEAL LH | 53389B | - | - | - |
| 4 | HOOD TO FRONT FENDER SEAL RH | 53388D | - | - | - |
| 5 | WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY | - | - | - | - |
| 6 | COWL VENTILATOR SPLASH SHIELD | 55752A | - | - | - |
| 7 | COWL VENTILATOR PANEL SUB-ASSEMBLY | 55704B | - | - | - |
| • | Non-reusable part | - | - |
| Callout - Procedure | Part Name Code | ||||
|---|---|---|---|---|---|
| 8 | AIR FUEL RATIO SENSOR (for Sensor 1) | 89467B | See step 8 | - | - |
| 9 | WIRE HARNESS CLAMP BRACKET | 82715 | See step 9 | - | - |
| 10 | NO. 1 EXHAUST MANIFOLD HEAT INSULATOR | 17167 | See step 10 | - | - |
| 11 | NO. 1 FRONT FLOOR HEAT INSULATOR | 58151 | See step 11 | - | - |
| 12 | MANIFOLD STAY | 17118 | See step 12 | - | - |
| 13 | EXHAUST MANIFOLD (TWC: Front Catalyst) | 17141 | See step 13 | - | - |
| 14 | EXHAUST MANIFOLD TO HEAD GASKET | 17173 | - | - | - |
| 15 | NO. 2 EXHAUST MANIFOLD HEAT INSULATOR | 17168 | - | - | - |
| • | Non-reusable part | - | - |