
Vios radiator drain valve is located at the lower right side of the radiator. Meaning of car radiator: It refers to the automobile radiator, which belongs to the car cooling system. The radiator in the engine water cooling system consists of three parts: the inlet chamber, outlet chamber, main plate, and radiator core. Steps for adding water to the car radiator: Turn the pressure cap counterclockwise. If you hear a hissing sound, wait until the sound disappears before opening it; Add an appropriate amount of coolant to the coolant expansion tank, reaching between the MAX and MIN marks on the tank; With the coolant expansion tank cap open, start the engine; After the engine is running, the coolant in the tank will slowly decrease. At this time, add an appropriate amount of coolant to the expansion tank until the liquid level reaches between the MAX and MIN marks on the coolant expansion tank; Reinstall the cap, ensuring the pressure cap is hand-tightened and fully seated.

As a seasoned driver who has owned several Vios models, I can tell you the radiator drain valve is typically located at the bottom of the radiator. You can find it by opening the engine hood. It's usually a small plastic or metal plug/valve positioned at the lowest edge of the radiator tank, designed for easy coolant drainage.
Important reminder: Always wait until the engine has completely cooled down before operating. Hot coolant can spray out and cause burns, plus coolant is toxic and should not come into direct contact with skin. During routine maintenance, you can periodically check if the valve is loose. Use a wrench to carefully open it for draining or fluid replacement - this is a crucial step in protecting your engine's cooling system.
If you can't locate it precisely, refer to the radiator section in your vehicle's manual for the most accurate information, as there might be minor variations between different model years of Vios. Above all, maintain patience and prioritize safety before attempting any DIY procedures.

I really enjoy DIY car repairs. The water drain valve on the Vios is located under the radiator, near the front of the car. First, open the hood and follow the radiator hose down to find a round or square valve at the bottom edge. It's usually a tightened screw or plastic head design. Wear gloves and goggles when operating to avoid splashing liquid. It's recommended to prepare a drain pan and wrench for easy coolant replacement. The cooling system requires regular maintenance, and cleaning the valve can prevent blockages and extend its lifespan. I've encountered issues with no drainage causing engine overheating, so locating it clearly can save a lot of trouble. If it's rusted, don't force it—apply some lubricant and work slowly.

Driving safety is paramount. The radiator drain valve is easily located at the bottom of the radiator, but it must be handled when the engine is cold. The Vios has a small drain plug under the radiator core that releases coolant when opened. Operating it at high temperatures may cause burns and chemical hazards. Remember to wear protective gear and clean the area to prevent slipping. Regular inspection of the valve's seal can prevent engine failures caused by leaks and extend the vehicle's lifespan. If unsure, seeking help from a professional technician is the safer option. Safe driving starts here.


