![]() Advertisements Can I Still Drive With the Engine Temperature Warning Light On? In this case, you should inspect and replace the sensor. It could be due to a malfunctioning temperature sensor. However, suppose the low engine temperature light stays on even after the engine has warmed up. This light only appears when the engine coolant temperature is low and will turn off once the engine is warm. In contrast, if you see a blue engine temperature warning light – it’s not as serious as a red one. Low Engine Temperature Warning Light (Blue) But if the light start stays illuminated, it’s a sign that your engine is overheating. In some cases, the warning light may also be accompanied by a message on the dashboard display.Īs mentioned above, when you turn on your car, the warning light usually lights up in red for a couple of seconds. The appearance of the engine temperature warning light can vary depending on the make and model of your vehicle. High Engine Temperature Warning Light (Red) The high engine temperature warning light is generally represented by a thermometer icon with two wavy lines below. This is normal, but if the light stays on or flashes while driving, especially if it’s the red symbol, you should take action right away. Usually, the engine temperature warning light comes on when you start the car, but it should go off once the engine has started. And that’s not good news because your car engine needs to be at a specific temperature to work properly. The light indicates that your engine temperature is too hot or too cold. Ready to get started? What Does It Mean When the Engine Temperature Warning Light Comes on? In this guide, I’ll explain everything you need to know about the engine temperature warning light, including what it means, why it appears, and what you should do if it lights up. This can be a nerve-wracking experience, especially if you’re unsure about the meaning of this light and how to respond to it. Our certified technicians are always available if you ever require assistance identifying glow plug issues.The engine temperature warning light is appearing on your car’s dashboard, right? Being a little patient will help keep your engine going strong in the long run. ![]() You should always wait for the light to shut off before attempting to start the engine. Some vehicle engines cannot even be started until the glowplug light has turned off, therefore preventing the drivers from starting the engine too soon. Is it safe to drive with the diesel engine pre-glow light on? Have a certified technician hook up a scan tool to your car to read this code. If a fault has been detected, the computer will save a code in its memory to help diagnose the issue. A faulty timer may keep the plugs on for too long, wearing them out, or even not turn the plugs on at all. The timer’s job is to turn the plugs off once the correct temperature has been reached. If a new glow plug doesn’t remedy the problem, take a look at other parts of the circuit, mainly the timer. ![]() Replacing any malfunctioning glow plugs should get rid of any issues you are having. Over time, after repeated warm up cycles, the glow plugs age and are not able to produce any heat. The most common reason to replace glow plugs is age. Typically, this light flashes only when an issue has been detected. Normally, the glow plug indicator light will come on only when the engine is cold. What the diesel engine pre-glow light means ![]() ![]() Once the correct temperature has been achieved, the computer will then let the driver start the engine. The system typically makes the driver wait around 10 seconds while the plugs warm up the engine. It raises the temperature inside the cylinders to facilitate in pressurizing and detonating the diesel fuel. The glow plug is a heating element that is activated during startup when the temperature of the engine is too low. Due to the nature of diesel engines, they require some extra help when first starting up at a cold temperature. ![]()
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