Coolant Temperature Sensor

NOTE: Replacement of temperature sensor should be done only when engine is cold. Removal of sensor requires having replacement sensor ready for immediate installation or draining cooling system below level of sensor (oil on Volkswagen models).

Disconnect battery ground cable. Drain coolant as required and disconnect electrical connector from sensor. Loosen and remove sensor. To install, reverse removal procedure using sealer on threads of sensor. Replace sealing washers (if equipped).