science | January 21, 2026

What is the coolant symbol?

As we've said, the coolant light is telling you that your engine's temperature is getting too high and this requires your immediate attention. If you continue to drive, ignoring the warning light, you are submitting your engine to temperatures that could cause permanent damage, resulting in expensive repairs.

What is the symbol for engine coolant?

In blue, the symbol, which resembles a thermometer placed in water, indicates that the coolant temperature is below what is needed for optimum performance. If the light blinks red then blue, an electrical malfunction in the cooling system is indicated. Again, contact your dealer or authorized repair center soon.

What does the coolant logo look like?

The shape of the symbols is meant to resemble a radiator and the wavy lines at the bottom indicates fluid level. The waves have also been described as mountains! They are used in a number of symbols and when seen usually means the coolant level is low.

What does coolant warning light look like?

Coolant Temperature Warning

This is the most urgent warning light because it means that your coolant and thus your engine is overheating. Stop in a safe area and let the engine cool down. Check for leaks in the coolant system, then check the coolant level, fans, and radiator cap.

Can I drive with the coolant light on?

The coolant pressure warning light is an important one - your vehicle is telling you that your engine is overheating due to low coolant. If this light has turned on and you're wondering if you can continue driving, the answer is you shouldn't. An overheating engine can lead to engine damage which can be costly repair.

What does the dashboard Coolant Light mean? (National Transmission)

Why did my coolant light come on?

What causes the coolant warning light to come on? The most common reason for the coolant light to become illuminated is simply that the coolant level is too low. There may be a floating sensor in your coolant tank that triggers the warning light when the level drops. You may need to book a coolant change.

How do I know if my coolant is low?

One tell-tale sign of low coolant is the high-temperature gauge on the dashboard. This gauge is designed to tell you when the engine is getting too hot. Most often, the gauge should stay near the center of the H and C symbols.

Can you top up coolant with water?

Can you top your coolant up with water? Coolant should only be topped up with water in case of an emergency when the coolant liquid level is lower than it should be. While topping up with water will help you get safely to the nearest garage and identify any issues, it shouldn't be relied upon.

Can I use water instead of coolant?

Water by itself can't do the job of antifreeze due to its lack of boiling and freezing point range and its inability to protect your vehicle's engine. Plus, it doesn't absorb heat as effectively. In the case of an absolute emergency, you can use water in your coolant rank.

What is the symbol for a car overheating?

Some cars may warn of an engine over-temperature condition by displaying a string of text in the driver's information center. Others will turn on an illuminated symbol depicting a thermometer floating in coolant. Regardless of the warning's appearance, the message is always the same: Your car's engine is overheating.

Can I drive with the blue coolant light on?

In most cases, this blue light only stays on for a minute or two. When this happens, driving off right away is ill-advised, especially in certain gears. The blue light will go off when you've given your car sufficient time to warm up.

Is coolant the same as antifreeze?

Engine coolant, also known as antifreeze, is mixed with water to keep the radiator from freezing in extreme cold and overheating in extreme heat. There are many different types of coolant, so it's important to know what variety is right for your car or truck.

What does coolant look like?

Coolant is usually going to be bright green, orange or pink, and it might have a sweet smell.

Is coolant in the radiator?

Car coolant is located in a reservoir affixed to the radiator before it's introduced to the engine block and its components. Engine coolant is used in conjunction with a liquid cooling system. The liquid cooling system is made up of several components.

How often do you need to fill coolant?

HOW OFTEN SHOULD YOU FLUSH THE COOLANT? Depending on the vehicle and the coolant, the average time between flushes is two years or 30,000 miles for silicated coolants and up to five years or 100,000 miles for an extended drain coolant. You can tell which type of coolant you have by the color.

How long can a car drive without coolant?

However, if you absolutely must start your car without coolant, it can probably run for about a minute without too much risk of damage. You may be able to get away with as much as 5 minutes of running without coolant, depending on the engine, car model, and how hard you're asking the engine to work.

How much is coolant for a car?

The cost of a coolant or antifreeze change will depend on the type and size of your vehicle. On average you can expect to pay between $100 and $200 for a standard coolant change.

Can I just top off coolant?

Top off the coolant reservoir

If the coolant level is low in the reservoir, you can refill it to the max fill line but do not overfill it. The coolant mixture expands when it heats up and needs the extra room. Keeping your coolant at the correct level is one of the ways to keep your radiator good working order.

Does low coolant mean leak?

Most people don't check the fluid levels in their cars as often as they should. Especially if a car is a newer model, most people just assume everything's OK, or that a light will show up on the dashboard if anything is wrong.

Does my car need coolant or antifreeze?

Along with fuel and oil, antifreeze is essential to a properly functioning engine. Without it, the heat from combustion would cause the engine to rapidly overheat, or even completely seize up.

What color Is engine coolant?

Fresh antifreeze is a clear brightly coloured liquid, usually blue, red, green, violet, yellow or orange but this will vary depending on the manufacturer's formulation. Over time, your coolant will become dirty losing its colour and becoming darker, often an oxidized shade of brown.

What colour coolant should I use?

The most common method to find out is to simply check the coolant and find out what colour it is when the vehicle is cold. Most coolant brands will keep their coolants the same colour to prevent any confusion. If you're still not sure, check the owners/service manual for coolant specifications.