Parts for your 2014 Subaru Legacy-Thermostat

Thermostat in the 2014 Subaru Legacy: What You Need to Know

The 2014 Subaru Legacy definitely uses a thermostat as part of its engine cooling system. Like most modern vehicles, the thermostat plays a crucial role in regulating the engine's temperature to keep it running efficiently and reliably. It is an essential component in the Legacy's liquid cooling system that helps the engine reach and maintain its optimal operating temperature.

So what exactly does the thermostat do in the 2014 Subaru Legacy? Well, the thermostat is basically a valve that sits between the engine and the radiator. When the engine is cold, the thermostat stays closed, preventing coolant from flowing to the radiator. This helps the engine warm up faster because the coolant circulates only within the engine. Once the engine hits the right temperature - usually around 88°C to 93°C (190°F to 200°F) - the thermostat opens up, allowing the hot coolant to flow to the radiator where it gets cooled before circulating back to the engine. This balance is vital for keeping the engine temperature stable, preventing overheating and ensuring efficient combustion and fuel usage.

Without a thermostat, the engine would take much longer to warm up, especially in colder climates, which would increase wear and tear on engine components and reduce fuel efficiency. Too much heat, on the other hand, risks warping metal parts and causing breakdowns. That is why Subaru and many other car makers incorporate the thermostat into their cooling systems.

When it comes to maintenance or replacement, the thermostat in the 2014 Subaru Legacy is a component worth paying attention to during servicing. Usually, thermostats are quite reliable and can last many years without issue, but like any mechanical part, they can fail. The most common failure mode is the thermostat getting stuck either open or closed. If it gets stuck closed, the engine can overheat quickly because hot coolant is not getting to the radiator to cool down. If it is stuck open, the engine can run too cool, leading to poor fuel economy, increased emissions and premature engine wear.

Some signs that the thermostat may need attention include the engine temperature gauge fluctuating wildly or staying unusually high or low, poor heater performance inside the cabin, or warning lights coming on. If the car feels sluggish during warm-up or takes a long time to reach the operating temperature, these might also indicate thermostat problems.

When servicing the 2014 Subaru Legacy, it's worthwhile having your mechanic check the thermostat alongside coolant system inspections. Replacing the thermostat typically involves draining some coolant, removing the thermostat housing, swapping the faulty part for a new one, and refilling the system. It is recommended to use genuine Subaru parts or quality aftermarket thermostats designed specifically for the Legacy to ensure proper fit and operation.

Regular coolant flushes, usually every two years or 40,000 to 60,000 kilometres (whichever comes first), help maintain the entire cooling system, including the thermostat, by preventing blockages and corrosion. Along with a cooling system pressure check and hose inspections, this helps keep the thermostat and engine running in tip-top condition.

At the end of the day, the thermostat in the 2014 Subaru Legacy is a small but mighty component that keeps the engine temperature stable, enhances performance and fuel efficiency, and protects the engine from damage. Keeping it in good working order is a smart move to avoid more costly repairs down the track and to keep the Legacy running smoothly all year round whether cruising on city streets or hitting the open road.

So if your 2014 Subaru Legacy is due for its next service, make sure the thermostat gets a look in. It might not be the most glamorous part under the bonnet but it sure plays an essential role in your car's health and driving enjoyment.