No driver wants to end up stranded on the side of the road due to an overheating engine.
That’s why regularly checking your vehicle’s coolant level is an essential part of routine car maintenance. If you’re unsure how to check your coolant or wondering, “What is coolant, and why is it important?”—our certified service team at Mercedes-Benz of West Covina is here to help.
Below, we’ll walk you through what coolant does, how to check it safely, and how to refill it when necessary.
What is Coolant?
Coolant, also known as antifreeze, is a fluid that regulates your engine’s temperature. It’s typically a mixture of ethylene glycol and water, and it plays a critical role in preventing your engine from overheating in hot weather and freezing in cold temperatures. Beyond temperature control, coolant also helps prevent corrosion and lubricates various components within the cooling system, extending the lifespan of your engine.
How to Check Coolant Level in 3 Easy Steps
Before you begin, always make sure the engine is completely cool. Never attempt to open the radiator cap while the engine is hot, as pressurized coolant can spray out and cause serious burns. Fortunately, you can check coolant levels safely by following these simple steps:
- Locate the Coolant Reservoir
After the engine has completely cooled, find the coolant overflow reservoir, a translucent plastic tank connected to the radiator by a hose. It typically has “Min” and “Max” level indicators on the side. - Check the Coolant Level
Examine where the coolant sits relative to the markings. If the fluid is at or near the “Max” line, your coolant level is sufficient. - Top Off if Needed
If the coolant is below the “Min” line, it’s time to add more coolant. Be sure to use the type recommended in your owner’s manual, and follow proper safety procedures outlined below.
Trust Mercedes-Benz of West Covina for Expert Car Care
Maintaining proper coolant levels is a small task that can prevent big problems down the road. If you’re unsure about checking or refilling your coolant, the expert technicians at Mercedes-Benz of West Covina are here to help. We proudly serve drivers in La Puente, Glendora, and surrounding areas, offering trusted Mercedes-Benz service and genuine OEM parts.