So, you may notice a sweet smell under the hood or in your A/C if there is a leakage that can result in a low coolant level. The odd sweet smell coming from your car after you shut the engine offĪntifreeze or coolants contains a sweet, viscous liquid called Ethylene glycol.Other warning signs for low coolant level These steps are very easy to do even if you are a newbie in the mechanical world. Ensure it reaches the full level when the engine is cold.Ĭonsider flushing your car’s cooling system if you forgot to do this process for time. Topping up more coolant to the reservoir is a simple way you can do at your home to fix this issue. Check with your car owner’s manual to know when to change coolant in your radiator. The first reason for this issue is that you did not check your engine regularly. If your vehicle has a floating sensor in its coolant tank and the coolant level goes below the standard amount, the sensor can trigger the warning light and make it illuminate. Yes, you are right! There are many causes that make the coolant level below the standard indicator. When your coolant warning light suddenly comes on, the first reason that appears in your mind is the low coolant level. There are 2 main reasons that lead the low coolant light to come on: Low coolant level and faulty coolant sensor.įigure out the causes of the low coolant light to know of what you can fix by yourself or what you have to ask your mechanic for help Low coolant Causes and how to fix the coolant warning light The coolant level sensor is usually located at the expansion tank’s bottom or on the radiator, depending on your car. Once the sensor detects the low coolant, a warning light will illuminate on the dashboard to alert you. The reed switch is closed by the ring magnet when you have enough coolant in the radiator but opens when the coolant drops to a certain level. When your car’s radiator has low coolant, a coolant level sensor uses a movable float device that contains a ring magnet and a reed switch to sense the condition. If the light does not go out after your engine startup, it means either there is a problem with the sensor system, the coolant is too low, or the temperature is high. Coolant warning light has many different styles and colorsĪny of these indicators often appears on the driver digital instrument cluster display.
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