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Home >> Lexus >> 2022 >> NX 250 AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - Service Information >> Engine Coolant Temperature Sensor >> Removal [11/2021 - ] >> Caution / Notice / Hint

Caution / Notice / Hint

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during engine coolant temperature sensor 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 battery Integrated current value initialization Stop and Start System Refer to REGISTRATION [11/2021 - ]
Replacement of engine coolant temperature sensor Inspection after repair
  • Poor idle, etc.
  • Engine start function, etc.
Refer to INITIALIZATION [11/2021 - ]
NOTE:

To prevent the key from being locked in the vehicle, make sure to enter e-latch inspection mode and enable the manual release handle before disconnecting the cable from the negative (-) battery terminal.

Refer to INSPECTION MODE PROCEDURE [11/2021 - ]

HINT: 

When the cable is disconnected / reconnected to the battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

LEARNING COMPLETES WHEN VEHICLE IS DRIVEN

Effect/Inoperative Function when Necessary Procedure not Performed Necessary Procedure Link
Lighting System (EXT) Drive the vehicle straight ahead at 15 km/h (10 mph) or more for 1 second or more. Refer to INITIALIZATION [11/2021 - ]
Front Camera System
Adaptive High Beam System
Stop and Start System Idle the engine for approximately 5 to 60 minutes or drive the vehicle until stop and start control is permitted. Refer to PRECAUTION [11/2021 - 03/2023] , or refer to PRECAUTION [03/2023 - 03/2024] , or refer to PRECAUTION [03/2024 - ]
LEARNING COMPLETES WHEN VEHICLE IS OPERATED NORMALLY

Effect/Inoperative Function when Necessary Procedure not Performed Necessary Procedure Link
E-latch System
  • Back door opener
Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch. Refer to INITIALIZATION [11/2021 - ]
Power Back Door System Reset back door close position Refer to INITIALIZATION [11/2021 - ]
Air Conditioning System After the ignition switch is turned to ON, the servo motor standard position is recognized. -


COMPONENTS (REMOVAL) 

Fig 1: Engine Coolant Temperature Sensor Removal Components
GTY1076524Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Callout - Procedure Part Name Code
1 DRAIN ENGINE COOLANT - - See step  1 -
2 BATTERY 28800 - - -
3 ENGINE COOLANT TEMPERATURE SENSOR 89422A See step  3 - -
Non-reusable part - -