One of the most incredible light signal features you may see from time to time in your car is the glow plug light flashing. Glow plug light flashing is a common issue, especially with Volkswagen TDI group car models that use diesel engines, and it leaves many drivers worried about their car.īut why is the glow plug light blinking in the dashboard? However, most of the time, drivers could see this flashing light of a glow plug light they may panic with the idea their car is damaged or won’t work anymore. Well, there are quite a significant number of reasons why glow plug lights will appear flashing on your car’s dashboard. The most common issue that causes glow plug light flash is when ECU detects a malfunction in the Engine Management Unit, resulting from coolant leaking, dirty oil, and worn glow/spark plugs. In most cases, when a glow plug light is initiated, the car may enter into safe mode or limp mode to prevent further problems resulting due to engine malfunctioning. This is when your car may lose its performance power, although it will depend on the nature of the issue. As well, once the car gets into grow plug light flashing, there will be issues with fuel economy.Ī glow plug light appears like a coil flashlight and also can occur when the engine is cold, and it won’t be easy when starting. When the engine is cold, the car will use the glow plug to heat the combustion chamber (air in the cylinder) during the startup of the car, which in turn causes the glow plug light to start flashing.Īfter the engine gets heated sufficiently, the glow plug light on the dashboard will turn off, and starting the car becomes easy. However, if the coil light doesn’t stop flashing, there could be other issues that are causing the glow plug light to occur in that manner, such as timer fault. The timer controls the period the glow plug should operate, but if it is not functioning, it will allow the glow plug to continue igniting the engine, which will cause it to wear out. What are the solutions to a flashing glow plug light?.What are the symptoms of a bad glow plug?.Can a faulty glow plug damage the engine?.

How much does it cost to replace the glow plugs?.What are the solutions to a flashing glow plug light? Will you let an issue in your car continue threatening the entire health of your car? Of course not therefore, if you have an issue with the flashing of the glow plug light in your car, get it solved.įixing a glow plug light flashing, you need a mechanic who will help you diagnose the real cause and provide the best solutions. It is a good idea to know what is causing the issue to take the next action.

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