Where is the thermostat located in the 8th generation Sonata?
2 Answers
The thermostat in the 8th generation Sonata is located at the water pump inlet. The thermostat is a valve that controls the flow path of the coolant and serves as an automatic temperature-regulating device. Typically, the thermostat contains a temperature-sensing component that opens or closes the flow of air, gas, or liquid through thermal expansion or contraction. The 8th generation Sonata measures 4820mm in length, 1835mm in width, and 1475mm in height, with a wheelbase of 2795mm. In terms of features, the 8th generation Sonata is equipped not only with a panoramic sunroof but also with advanced technological configurations rarely seen in mid-to-high-end models, such as the VSM vehicle stability control system, TPMS tire pressure monitoring system, HAC hill-start assist system, and ESS emergency brake reminder system.
The thermostat of the eighth-generation Sonata is typically located near the water pump, specifically at the front of the engine close to the timing belt cover. You'll need to remove the engine upper cover first, then follow the upper radiator hose to locate a metal housing with two hoses attached—that's the thermostat assembly. This design is quite common in Hyundai vehicles, and the location is basically the same for both 2.0L and 2.4L engines. Don't confuse it with the water pump, which is a separate component with an impeller. When I helped my neighbor inspect it last time, I noticed the Hyundai logo embossed on its housing. If replacing it yourself, pay attention to bleeding the air system and use only the OEM 88°C opening model—aftermarket parts may cause abnormal coolant temperature.
