
The thermostat in the 2016 Vios is located on the right side of the exhaust pipe on the lower radiator hose. The thermostat is a valve that controls the flow path of the coolant. The body dimensions of the 2016 Vios are: length 4410mm, width 1700mm, height 1490mm, wheelbase 2550mm, minimum ground clearance 140mm, fuel tank capacity 42 liters, and trunk capacity 476 liters. The 2016 Vios is equipped with a 1.5L naturally aspirated engine, with a maximum power of 79kW and a maximum torque of 140Nm, paired with a 5-speed manual transmission. It features a front MacPherson strut independent suspension and a rear torsion beam non-independent suspension.

As someone who frequently works on car repairs, I've dealt with many thermostat issues on the 2016 Toyota Vios. It's generally installed in the right side area of the engine compartment, near the water pump and timing cover. You'll need to remove the air filter cover first to see a small circular valve body connected to the coolant hose. The thermostat's function is to control the flow of coolant. If it gets stuck or leaks, it can cause high engine temperature or cold start difficulties. Remember to check the rubber seal for aging during each maintenance—though small, its position is crucial. Ensure the engine is cool before replacement to avoid burns. Keeping a multimeter handy to test voltage stability is also helpful. I've replaced it once myself—the process isn't overly complicated, but the sealant must be applied properly to prevent coolant leakage. Consulting the service manual before repairs is always safer.

I've been driving a 2016 Vios for three years. Last year, I located the thermostat myself—it's in the upper right corner of the engine bay, specifically behind the fan. The brass-colored valve at the hose connection is the thermostat. At that time, the temperature gauge suddenly spiked, and a friend reminded me to check here first. The location isn't hard to find but is a bit hidden. A stuck thermostat can hinder cooling, so pay attention to temperature changes while driving to avoid breakdowns. I recommend beginners keep some tools like wrenches and screwdrivers handy, and disconnect the car battery for safety before working. After confirming the location, gently shake the hose to test for looseness—timely replacement of aged parts can save big money. Regular maintenance of the cooling system can also extend engine life.

I've researched multiple Toyota models, and the thermostat of the 2016 Vios is typically located in the central upper area of the engine, precisely at the interface between the water pump and cylinder head. This small valve controls coolant circulation with a compact design, requiring removal of some covers for access. Knowing its location helps diagnose overheating issues - for instance, slow engine warm-up during cold starts may indicate thermostat failure. Opting for genuine OEM parts ensures better durability during replacement.


