Hyundai 39220-22010 Sensor Assembly-Water Temperature

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On 2011 and later 1.8L and all 2013 and later models, the coolant temperature sending unit has been incorporated into the engine coolant temperature sensor. The coolant temperature sending unit is threaded into the thermostat housing just ahead of the coolant temperature sensor. It is located in front of the Engine Coolant Temperature (ECT) sensor, which is also located on the thermostat housing. The coolant temperature sending unit has a single spade-type terminal, while the ECT sensor has a two-terminal electrical connector. If the coolant temperature gauge is inoperative, check the fuses first. If the temperature gauge indicates a high operating temperature after the engine has warmed up, troubleshoot the issue. If the temperature gauge indicates HOT shortly after the engine is started cold, disconnect the wire at the coolant temperature sending unit. If the gauge reading drops, replace the sending unit. If the reading remains high, check if the wire to the gauge is shorted to ground or if the gauge is defective. If the coolant temperature gauge fails to indicate anything after the engine has been fully warmed up, and if the fuse is okay, shut off the engine and disconnect the wire from the sending unit. Using a jumper wire, connect it to a clean ground on the engine. Turn on the ignition without starting the engine. If the gauge now indicates HOT, replace the sending unit. If the gauge still doesn't indicate anything, either the circuit is open or the gauge is defective. To test the sending unit, start the engine and warm it up. Stop the engine and turn the ignition switch to the OFF position. Unplug the wire from the coolant temperature sending unit and then connect the leads of an ohmmeter between the sending unit terminal and a good ground on the engine. Compare the measurement with the sending unit resistance. If the ohmmeter indicates a different figure, then the sending unit is defective and should be replaced. To replace the sending unit, with the engine completely cool, remove the cap from the radiator to release any pressure, then replace the cap. Disconnect the wiring harness from the sending unit. Prepare the new sending unit for installation by applying thread sealant or Teflon tape to the threads. Unscrew the sending unit from the engine and quickly install the new one to prevent coolant loss. Tighten the sending unit securely and connect the wiring harness. Refill the cooling system and run the engine. Check for leaks and proper temperature gauge operation at the instrument panel.