Buy 2009 Hyundai Sonata Engine Coolant Temperature Sensor. Don’t, Make, Switch - OEM Hyundai Part # 3922021330 (39220-21330, 3922021300, 3922021310, 3922021320)

Sensor. Temperature. Coolant. Assembly - Water. Engine.
Temperature Sensor for Engine Coolant.

Engine Coolant Temperature Sensor

Fits Elantra, Excel, Scoupe, Sonata

2.0 & 2.4 LITER, water. Elantra; Konghwa. Elantra; Korea Electric. Excel. Scoupe. Sonata; To 9/15/94.
Engine Coolant Temperature Sensor - Repair or Replace
If your engine coolant temperature sensor has failed, you may notice one of several symptoms: your temperature gauge doesn’t move, your engine overheats without warning, your radiator fans don’t switch on, or they don’t switch off. If your 2009 Hyundai Sonata has any of these symptoms, it's a good idea to let a trained Hyundai technician perform an inspection.