The coolant temperature indicator sensor is installed in the cylinder head on the right side.
We change the sensor on a cold engine. Draining the coolant (see Coolant replacement).
Disconnect the wire tip from the sensor output. key «at 22» (or candle wrench) unscrew the coolant temperature sensor.
Before installing a new sensor, check its serviceability (see Checking control devices and sensors) and make sure that its sealing aluminum gasket is not damaged.
We connect the wire, fill in the coolant. In case of leaks, tighten the sensor.