Engine Coolant Temperature (ECT) Sensor - Electric Thermostat Housing
WARNING: This page is about a different car, the 2019 Jaguar XF. However, it is still accessible from the selected car via links, so may be relevant.
The ECT sensor is located in the electric thermostat housing. The sensor is a sealed in the thermostat housing with an O-ring seal. The sensor is a push fit in the thermostat housing and rotated clockwise to lock in position.
The ECT sensor monitors the engine coolant temperature in the thermostat housing and uses the information to control the electric thermostat.
Operation of the ECT sensor is as described above for the radiator outlet ECT sensor.