![]() bad connections on coolant probe, bad earth connection, etc). Coolant level probe in expansion tank is badħ. Coolant Level Control unit has gone bad (had this happen too).Ħ. In this case the LED might flash all the time including when the car is ice cold (had this happen)ĥ. Needle may or may not move towards full hot position - depends on controller version.Ĥ. All the usual reasons - thermostat, water pump, electric fan not working, etc.ģ. Car is overheating (needle will move up as well). You just started the car - the LED should flash for a few seconds and shut off - this is normal.Ģ. Here are some reasons the LED will flash:ġ. With this control unit you have a better idea when the LED flashes if it is because the coolant is low or the car really is overheating. The newer version of the control unit works differently - it pulses the signal to the instrument cluster such that the LED flashes, but the needle does not move to the hot position. The bad thing about this is it is impossible to tell the difference between slightly low coolant and an overheating car by looking at the gauge. With the earlier version of this controller, if the coolant level was low, the controller would signal the gauge would move to the hot position and the LED would flash. The way the coolant level controller works (its not a relay) is that if it detects the coolant level is low, it actually simulates an overheating condition as far as the gauge goes. Pull Over Safely: Find a safe spot to pull over and turn off the engine.Ĭheck for Obvious Issues: Inspect for leaks or other visible problems.Ĭonsult a Professional: If the issue persists, consult a certified Subaru service center for a thorough diagnosis.In case anyone looks at this thread in the future, I just wanted to add what I know about about the coolant level sensing system from going through it on my Storm. If you notice that the blue coolant light flickers or stops altogether, it could be a sign of a malfunctioning sensor or a more serious issue with the cooling system. It ensures better fuel efficiency and a smoother driving experience. What role do other fluids play as the engine warms up?Īs your engine reaches its ideal temperature, other fluids like engine oil and transmission fluid also reach their optimal state. ![]() Your engine is ready for smooth driving since the coolant is no longer too cold. When the blue coolant light turns off, it’s a sign that your engine has reached its optimal operating temperature. It is possible to ensure your engine’s health by taking these steps. Refer to your owner’s manual for instructions on how to do this. Reset the Light: After resolving the issue, you may need to reset the blue coolant light manually.Take your Subaru to a certified service center for a thorough inspection. Consider consulting a professional if you’re uncomfortable performing these checks yourself.Leaks in the system may cause low antifreeze levels. If there are leaks in the radiator or hoses, check them.Once the engine is cool, check the antifreeze levels under the hood. Wear gloves carefully to avoid burning yourself.Turn off the engine and let it cool if the blue light doesn’t disappear.To Resolve the issue, you can follow these steps: Usually, a persistent blue light indicates low antifreeze levels. So, what should you do if the blue coolant light stays on longer than usual? Don’t panic. Your drive will be smoother and safer if all the fluids work effectively. ![]() Not enough oil has reached all parts, and transmission fluid isn’t at its optimal temperature. When should the engine be warmed up? A cold engine is less efficient than one that is warm. That is common in colder months or when starting your car for the first time. When this light illuminates, it tells you the coolant is too cold. The blue coolant light on the Subaru dashboard is a temperature gauge for your engine’s coolant or antifreeze. What can cause the coolant light to come on? So, if you want to know how to reset the blue coolant light that appears when your car starts, this guide is for you. We’ll even talk about how Mazda handles its blue coolant light. You can also drive a car while the light is on if you know how to reset it. However, if the l ight persists or starts flashing, you may need to take action. We’ll look at what to do when the Subaru blue coolant light turns off, stops, or even flashes in this blog. It is a normal occurrence and indicates that your engine is not yet warmed. When you start your Subaru, it’s common for the blue coolant light to illuminate. But what does it mean when Subaru Blue Coolant Light light comes on, and more importantly, how do you fix it if it doesn’t turn off? It serves as an important indicator of your engine’s temperature. When the car starts, a blue coolant light illuminates.Ive tried replacing the coolant sensor and thermostat with one from our parts car to rule it out. Is it safe to drive with a blue coolant light on? My car recently started to have the coolant light come on blinking red and after a few miles the temperature gauge goes to red.What can cause the coolant light to come on?.
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