A new light on your dashboard? You don’t find out why it doesn’t switch off… It’s typical, an automobile is elaborate and there are multiple causes why a light could occur. In the event that your glow plug light comes on while driving your Ford Mondeo 4, it may suggest some concerns. In the following paragraphs, we will do everything we can to support you see things more clearly. First, we will see how the preheating light on your Ford Mondeo 4 functions, and then the different motives it lights up when you are driving

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What is the role of my Ford Mondeo 4 glow plug light?

The primary role of the engine glow plug light, which is in most cases represented by a yellow coil, is to assure that your glow plugs are working correctly. Indeed, it must light up when you switch on your Ford Mondeo 4 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 motor vehicle. Nevertheless, if it comes on while driving, it may indicate multiple troubles, we will try to describe the most important ones.

What to do if the glow plug light comes on while driving on my Ford Mondeo 4?

A glow light that comes on while driving on your Ford Mondeo 4 or at any other time other than when the engine is started is designed to alert you to a fault other than your spark plugs, we will look at this right now. In any case, plug in your car to the diagnostic tool will allow you to carefully understand the explanation for the light up of your glow light.

My Ford Mondeo 4 glow light comes on and I’m encountering a loss of power

The first situation is that you identify that your glow plug light comes on while driving your Ford Mondeo 4 and that you also knowledge a loss of power. In this instance, some concerns can explain its presence. Here is a list of the most important causes:

  • Issue of EGR valve, in fact, if you suffer a loss of power, it is possible that your EGR valve is blocked, in this case, it is rational that your preheat light comes on while driving on Ford Mondeo 4 because it is one of the issue of which it is intended to notify you. Have the status of your valve checked
  • Issue 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.
  • Issue associated with the injection, either an injector that has seized up or the injection pump that is malfunctioned by filings or other possible foreign bodies that disturb its proper function.
  • Finally, the last issue that could lead to a glow indicator light on your Ford Mondeo 4 coupled with a loss of power, is that your fuel filter is too dirty, you should feel 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 Ford Mondeo 4

To finish , we’ll give you the motives for a glow plug light that comes on on your Ford Mondeo 4 without you feeling any difference in power or motor vehicle behaviour. Generally, 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 issue.
  • 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 advise you to go to your auto technician.
  • Faulty injection pressure sensor, ECU error

    • If you need more guides on the Ford Mondeo 4, go to our Ford Mondeo 4 category.