A new light on your dashboard? You don’t find out why it doesn’t shut off… It’s normal, an auto is elaborate and there are many causes why a light might come on. In cases where your glow plug light comes on while driving your Volkswagen Golf, it might indicate different things. In the following paragraphs, we will do anything we can to support you see things more clearly. First, we will discover how the preheating light on your Volkswagen Golf operates, and then the different reasons it lights up when you are driving

glow-plug-light-volkswagen-golf

What is the role of my Volkswagen Golf glow plug light?

The main intent 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 effectively. Indeed, it must light up when you switch on your Volkswagen Golf to tell you that they are heating the intake air in your cylinders and must go out after a few moments when the engine is running. This preheat light is therefore not meant to stay or come on while driving with your automobile. Nevertheless, if it turns on while driving, it may reveal multiple issues, we will try to detail the most important ones.

What to do if the glow plug light comes on while driving on my Volkswagen Golf?

A glow light that comes on while driving on your Volkswagen Golf or at any other time other than when the engine is started is intended to alert you to a problem other than your spark plugs, we will look at this right now. No matter the reason, connecting your vehicle to the diagnostic tool will allow you to accurately understand the cause for the light up of your glow light.

My Volkswagen Golf glow light comes on and I’m encountering a loss of power

The first possibility is that you identify that your glow plug light comes on while driving your Volkswagen Golf and that you also encounter a loss of power. In this case, different trouble can describe its lightning. Here is a list of the most important causes:

  • Problem of EGR valve, indeed, 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 Volkswagen Golf because it is one of the failures of which it is meant to warn you. Have the status of your valve looked at
  • Problem linked 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 broken by filings or other possible foreign bodies that disturb its proper functioning.
  • Finally, the last problem that could lead to a glow indicator light on your Volkswagen Golf coupled with a loss of power, is that your fuel filter is too dirty, you should come to 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 Volkswagen Golf

To conclude, we’ll give you the reasons for a glow plug light that comes on on your Volkswagen Golf without you feeling any difference in power or automobile behaviour. Ordinarily, this is an electronic problem:

  • Glow plug relays or fuses to be changed, test and replace 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 resolve 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 advise you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error

    • In the event that you have any additional questions about the Volkswagen Golf, do not hesitate to consult our Volkswagen Golf category.