Where is the thermostat located on the Toyota Vios?
3 Answers
Toyota Vios thermostat is located on the lower radiator hose, to the right of the exhaust manifold. Below is relevant information: Thermostat Introduction: The thermostat is an automatic temperature-regulating device, typically containing a temperature-sensing component. Its function is to automatically adjust the amount of water entering the radiator based on the coolant temperature, changing the water circulation range to regulate the cooling system's heat dissipation capacity, ensuring the engine operates within an appropriate temperature range. Toyota Introduction: The Toyota Vios is equipped with a 1.5L naturally aspirated engine, delivering a maximum torque of 138 N·m. Its dimensions are 4435mm in length, 1700mm in width, and 1490mm in height, with a top speed of 190 km/h.
I've been driving a Toyota Vios for many years, and the thermostat is located at the upper part of the engine, near the cylinder head outlet, usually connected to the upper radiator hose. After opening the hood, you can see a small metal device installed there, resembling part of a hose connector. If the car's water temperature is unstable or too high, it might be stuck, causing improper coolant flow. It's best to wait for the engine to cool down before replacing it to avoid burns; I've replaced it once myself, first draining some coolant, loosening the screws, and being careful not to misalign the new gasket. After this maintenance, the water temperature performance improved significantly, and I recommend regular checks to prevent unexpected overheating issues.
I'm a loyal fan of the Vios. The thermostat is usually installed at the upper radiator hose connection, specifically on the front side of the engine near the water pump area. This component acts like an automatic door—it closes when the coolant temperature is low to help the engine warm up faster, and opens when the temperature rises to allow coolant circulation. Its location isn't too hidden and is easily identifiable in the engine bay. If it fails, the car may experience slow warm-up or overheating, requiring prompt attention. I recommend replacing it with an OEM part for better compatibility, and also checking the hoses for aging or cracks to prevent cascading issues that could affect the overall cooling system efficiency.
