What does it mean when the antifreeze light comes 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. Low coolant levels are usually caused by leaks, either in the reservoir or somewhere in the lines.
Can low antifreeze cause a check engine light to come on?
Low coolant in the radiator of your car can trigger the malfunction illumination light (MIL), also known as the “check engine” light. Low coolant can affect the internal temperature of the engine, which is protected by the antifreeze.
What does the low coolant temperature warning light mean?
If the level is low, you can add just water temporarily so that you can drive somewhere to get the car checked out. Keep in mind that a low coolant level means a leak is present which needs to be remedied at the earliest. Otherwise, your car will eventually be low on coolant again and run the risk of the engine getting overheated.
Why does antifreeze keep the coolant from freezing?
Normal water freezes at 0°C, engine coolant freezes at -35°C. This prevents the coolant from from freezing in most cold climates, therefore preventing engine damage. Another benefit of antifreeze is that is raises the boiling point to help prevent the fluid from evaporating; it also means that the fluid will not boil at 100°C.
When to turn off the coolant pressure light?
First, pull over immediately and turn off your engine. Check your coolant level, but don’t do it until your engine has cooled down. This usually takes about half an hour.
Can you use screenwash as a replacement for antifreeze?
Screenwash may have similar properties to antifreeze, but it doesn’t mix well with coolant. While it stops the glass from freezing when used on your windscreen, it doesn’t do a great job of protecting a radiator, unfortunately. It’s also not recommended to use water as a replacement for coolant either.