A new light on your dashboard? You don’t find out why it doesn’t turn off… It’s normal, a car is complicated and there are multiple reasons why a light could occur. In cases where your glow plug light comes on while driving your seat leon, it might show some concerns. In this article, we will do anything we can to help you see things more clearly. First, we will discover how the preheating light on your seat leon functions, and then the different reasons it lights up when you are driving

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What is the purpose of my seat leon glow plug light?

The primary intent of the engine glow plug light, which is most of the time symbolized by a yellow coil, is to make sure that your glow plugs are working properly. Indeed, it must light up when you switch on your seat leon to tell you that they are heating the intake air in your cylinders and must go out after a few minutes when the engine is running. This preheat light is therefore not supposed to stay or come on while driving with your vehicle. But, if it comes on while driving, it may show multiple issues, we will try to detail the main ones.

What to do if the glow plug light comes on while driving on my seat leon?

A glow light that comes on while driving on your seat leon or at any other time other than when the engine is started is intended to alert you to a fault other than your spark plugs, we will take a look at this right now. In any case, connecting your vehicle to the diagnostic tool will allow you to properly translate the reason for the light up of your glow light.

My seat leon glow light comes on and I’m encountering a loss of power

The first probability is that you recognize that your glow plug light comes on while driving your seat leon and that you also knowledge a loss of power. In this instance, some concerns can demonstrate its lightning. Here is a list of the main reasons:

  • Issue of EGR valve, in fact, if you suffer a loss of power, it is possible that your EGR valve is blocked, in this instance, it is rational that your preheat light comes on while driving on seat leon because it is one of the failures of which it is designed to warn you. Have the status of your valve checked out
  • Problem related to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can result in turbo boost and a perturbation in the performance of the turbo.
  • Problem relevant to the injection, either an injector that has seized up or the injection pump that is malfunctioned by filings or other possible foreign bodies that affect its proper functioning.
  • Finally, the last problem that could lead to a glow indicator light on your seat leon coupled with a loss of power, is that your fuel filter is too dirty, you should experience jerks because of a bad fuel flow in the engine.

My glow plug light comes on or is flashing but no difference on the performance of my seat leon

To finish , we’ll give you the reasons for a glow plug light that comes on on your seat leon without you feeling any difference in power or vehicle behaviour. In most cases, this is an electronic fault:

  • Glow plug relays or fuses to be replaced, test and change if necessary.
  • A contactor/potentiometer on one of your pedals (brake, accelerator or clutch) has failed, often a simple de-seizure will be enough to solve the problem.
  • You have a false contact somewhere in your electrical circuit, check the other solutions first because it is not easy to find it alone, we recommend you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error

    • To get more tips on the seat leon, take a look at the seat leon category.