What is the blue coolant light for?
The blue coolant light in your vehicle is a warning indicator that alerts you to a potential issue with your vehicle's cooling system. This light is designed to come on when the engine coolant temperature is higher than normal, signaling that there may be a problem that requires your attention.
What the Blue Coolant Light Means
The blue coolant light, also known as the "temperature warning light" or "engine coolant temperature light," is part of your vehicle's dashboard warning system. It is typically blue in color to differentiate it from other warning lights, such as the red oil pressure light or the check engine light.
When the blue coolant light illuminates, it indicates that the engine coolant temperature has risen to a level that is higher than the normal operating range. This can be caused by a variety of issues, including:
- A problem with the coolant system, such as a leak or a malfunctioning thermostat
- A problem with the water pump, which is responsible for circulating the coolant through the engine
- A blockage in the radiator or coolant hoses, preventing proper heat dissipation
- A problem with the cooling fan, which helps to draw air through the radiator and cool the engine
If the blue coolant light comes on, it's important to take action immediately to prevent further damage to your engine. Continuing to operate the vehicle with an overheated engine can lead to serious and costly repairs, such as a blown head gasket or even a complete engine failure.
What to Do When the Blue Coolant Light Comes On
If the blue coolant light illuminates while you're driving, the first thing you should do is pull over to a safe location and turn off the engine. This will help to prevent further overheating and potential damage to the engine.
Once the engine has had a chance to cool down, you can check the coolant level in the overflow tank or radiator. If the coolant level is low, you can carefully add more coolant to the system, being careful not to open the radiator cap while the engine is hot.
If the coolant level appears to be normal, the issue may be with the cooling system itself, such as a problem with the water pump, thermostat, or radiator. In this case, you'll need to have the vehicle inspected by a qualified mechanic to diagnose and repair the problem.
It's important to address the issue as soon as possible to prevent further damage to your engine and avoid costly repairs. Ignoring the blue coolant light can lead to overheating, which can cause significant damage to the engine and other components.
Why is the blue coolant light staying on in my Subaru?
The Blue Engine Coolant Warning Temperature Light comes on when you start your Subaru, it just means that the engine is not warmed up yet. You'll most likely see this light every time you start the car. Until it goes away though, you should drive gently.
How do you fix a blue coolant light?
How to Fix the Engine Coolant Temperature Warning Light?
- Stop the Vehicle Safely.
- Check Coolant Levels.
- Inspect for Leaks.
- Test the Thermostat.
- Examine the Water Pump.
- Inspect the Radiator.
- Use a Diagnostic Tool.
How long should blue coolant light stay on?
one to two minutes
Also known as the Coolant Temperature Low Indication Light, the blue light on your dashboard indicates that coolant temperature is extremely low. Once you turn the ignition key, the warning light illuminates for one to two minutes (until the engine is at optimal operative temperature) then goes off automatically.
Which cars use blue coolant?
Trust Prestone – a leading global manufacturer of Original Equipment Antifreeze + Coolant. Can top off or replace any Blue antifreeze + coolant in all Honda; all Acura; Nissan 2009 and newer; Infiniti 2009 and newer & Subaru 2009 and newer vehicles, guaranteed.
Is it OK to drive with a bad coolant temp sensor?
Not usually, because it can lead to your engine overheating. If you see a red warning light or your car is overheating, do not continue to drive.
Can I drive with the blue coolant light on?
This light indicates that (you guessed it) your engine is too hot! If this light comes on, it's recommended you turn your engine off, or idle until the light goes back on.
What does blue coolant do?
Most applications that call specifically for a blue coolant are in high performance or high mileage situations. It is also standard in Asian vehicles. These generally have more powerful anti-corrosion additives.
Why is my engine coolant blue?
Also known as the Coolant Temperature Low Indication Light, the blue light on your dashboard indicates that coolant temperature is extremely low.
Why is my coolant light blue?
The blue gauge indicates that the engine coolant temperature is low, and the red gauge indicates that the engine coolant temperature is high and overheating. If the engine coolant temperature gauge needle is in the red range, there is the possibility of overheating.
How do I fix my coolant temperature warning?
When the coolant level is low, the engine may overheat, triggering the temperature light. To address this issue, check the coolant reservoir and radiator for signs of low coolant levels. If necessary, top off the coolant reservoir with the appropriate type of coolant recommended by your vehicle's manufacturer.
