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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 engine coolant temperature sensor (for Radiator Side)
  • Replacement of engine coolant temperature sensor (for Water Inlet Housing Side)
  • Replacement of engine coolant temperature sensor (for Cylinder Head Side)
  • Replacement of Engine coolant temperature sensor (for Outlet Side)
Inspection after repair
  • Poor idle, etc.
  • Engine start function, etc.
for 1Motor-HEV Model:
Refer to INITIALIZATION [03/2024 - ]
for Gasoline Model:
Refer to INITIALIZATION [12/2023 - ]
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 (-) auxiliary battery terminal.

Refer to INSPECTION MODE PROCEDURE [12/2023 - ]



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 Procedures are not Performed Necessary Procedures Link
Stop and start system Drive the vehicle until stop and start control is permitted (approximately 5 to 60 minutes). Refer to PRECAUTION [12/2023 - ]
Front camera system Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more. Refer to INITIALIZATION [03/2024 - ]
LEARNING COMPLETES WHEN VEHICLE IS OPERATED NORMALLY

Effect/Inoperative Function When Necessary Procedures are not Performed Necessary Procedures Link
Air conditioning system After the ignition switch is turned to ON, the servo motor and expansion valve standard position is recognized. -
Power running board system After turning the ignition switch to ON, opening the door, and then fully deployed the power running board system, close the door and stowed the power running board system. Refer to INITIALIZATION [12/2023 - ]
Power tail gate system Reset tail gate close position. Refer to INITIALIZATION [12/2023 - ]


COMPONENTS (REMOVAL) 

Fig 1: Engine Coolant Temperature Sensor Components Removal [03/2024 - ]
GTY1183343Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Procedure Part Name Code
1 DRAIN ENGINE COOLANT - - See step  1 -
2 ENGINE COOLANT TEMPERATURE SENSOR (for Radiator Side) 89422A See step  2 - -
3 ENGINE COOLANT TEMPERATURE SENSOR (for Outlet Side) 89422A See step  3 - -
4 INTAKE MANIFOLD WITH THROTTLE BODY ASSEMBLY - - - -
5 E.F.I. ENGINE COOLANT TEMPERATURE SENSOR (for Water Inlet Housing Side) 89422 See step  5 - -
6 E.F.I. ENGINE COOLANT TEMPERATURE SENSOR (for Cylinder Head Side) 89422 See step  6 - -
• Non-reusable part - -