A new light on your dashboard? You don’t understand why it doesn’t shut off… It’s normal, a car is complicated and there are many causes why a light might come on. In the event that your glow plug light comes on while driving your Volkswagen Fox, it might indicate several problems. On this page, we will do everything we can to help you see things more clearly. First, we will find out how the preheating light on your Volkswagen Fox works, and then the different explanations it lights up when you are driving

glow-plug-light-volkswagen-fox

What is the purpose of my Volkswagen Fox glow plug light?

The primary intent of the engine glow plug light, which is in most cases represented by a yellow coil, is to guarantee that your glow plugs are working properly. Indeed, it must light up when you switch on your Volkswagen Fox 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 car. But, if it comes on while driving, it may show multiple issues, we will try to summarize the most important ones.

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

A glow light that comes on while driving on your Volkswagen Fox or at any other time other than when the engine is started is meant to inform you to a fault other than your spark plugs, we will take a look at this right now. In any case, plug in your car to the diagnostic tool will allow you to properly interpret the explanation for the light up of your glow light.

My Volkswagen Fox glow light comes on and I’m having a loss of power

The first possibility is that you detect that your glow plug light comes on while driving your Volkswagen Fox and that you also knowledge a loss of power. In such a case, several problems can demonstrate its lightning. Here is a list of the most important causes:

  • Trouble of EGR valve, in fact, if you go through a loss of power, it is possible that your EGR valve is clogged, in this instance, it is rational that your preheat light comes on while driving on Volkswagen Fox because it is one of the issue of which it is designed to notify you. Have the status of your valve tested
  • Trouble associated with the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can lead to turbo boost and a disturbance in the performance of the turbo.
  • Trouble in connection with the injection, either an injector that has seized up or the injection pump that is destroyed by filings or other possible foreign bodies that disturb its proper operation.
  • Finally, the last trouble that could lead to a glow indicator light on your Volkswagen Fox 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 Fox

Finally, we’ll give you the explanations for a glow plug light that comes on on your Volkswagen Fox without you feeling any difference in power or car 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 fix the trouble.
  • You have a false contact somewhere in your electrical circuit, check the other alternatives first because it is not easy to find it alone, we advise you to go to your technician.
  • Faulty injection pressure sensor, ECU error

    • If you have any additional questions about the Volkswagen Fox, do not hesitate to consult our Volkswagen Fox category.