Hi Michael, I'm glad to assist you. This is typically located on or near the engine block. It's often situated near the thermostat housing or the radiator hose inlet/outlet. I hope this helps, and if you're interested in this sensor, you can click on the link below for direct ordering to take advantage of our ongoing discount and limited stocks. Happy shopping. https://www.carparts.com/coolant-temperature-sensor/gpd/gpd1712002?can=CPAE1047_CSQA_20240208

Hi Alex, I'm pleased to assist you. This part does not fit the 2010 Kia Rio. We do carry the direct-fit coolant temperature sensor compatible with the vehicle. The part is located in the coolant passage in the engine bay usually near the thermostat. It's a small component and you may need to use a light to find it. Click on the link below to see and order at 52% off the regular price today while supplies last. I hope this is helpful. Enjoy shopping at Carparts.com! https://www.carparts.com/details/Kia/Rio/Standard/Coolant_Temperature_Sensor/2010/SITX122.html?can=CPGG4850

Hi Michael, I'm glad to assist you. The engine coolant temperature sensor is usually located close to the thermostat of the cooling system or inside of it. The cooling system is located beneath the air intake pipe and behind the right cylinder of most vehicles. It would be best if you would also consult your trusted local auto repair shop. Grab our sale price offer and click the link below to order today. I hope this helps. Happy shopping. https://www.carparts.com/coolant-temperature-sensor/gpd/gpd1712002?can=CPJE1043