A new light on your dashboard? You don’t find out why it doesn’t shut off… It’s normal, a vehicle is complicated and there are many causes why a light could occur. In the event that your glow plug light comes on while driving your Volkswagen Golf 7, it may possibly point out different concerns. In the following paragraphs, 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 Golf 7 functions, and then the different causes it lights up when you are driving


What is the goal of my Volkswagen Golf 7 glow plug light?

The main purpose of the engine glow plug light, which is most of the time symbolized by a yellow coil, is to ensure that your glow plugs are working properly. Indeed, it must light up when you switch on your Volkswagen Golf 7 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 expected to stay or come on while driving with your motor vehicle. However, if it comes on while driving, it may indicate multiple troubles, we will try to point out the most important ones.

What to do if the glow plug light comes on while driving on my Volkswagen Golf 7?

A glow light that comes on while driving on your Volkswagen Golf 7 or at any other time other than when the engine is started is designed to alert you to a problem other than your spark plugs, we will check out this now. In any case, connecting your vehicle to the diagnostic tool will allow you to accurately understand the reason for the light up of your glow light.

My Volkswagen Golf 7 glow light comes on and I’m having a loss of power

The first probability is that you notice that your glow plug light comes on while driving your Volkswagen Golf 7 and that you also knowledge a loss of power. In such a case, different problems can explain its lightning. Here is a list of the most important causes:

  • Trouble of EGR valve, in reality, if you go through a loss of power, it is possible that your EGR valve is blocked, in this instance, it is logical that your preheat light comes on while driving on Volkswagen Golf 7 because it is one of the failures of which it is supposed to alert you. Have the status of your valve inspected
  • Problem associated with 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 disturbance in the performance of the turbo.
  • Problem related to the injection, either an injector that has seized up or the injection pump that is damaged by filings or other possible foreign bodies that disrupt its proper operation.
  • Finally, the last trouble that could lead to a glow indicator light on your Volkswagen Golf 7 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 Volkswagen Golf 7

To conclude, we’ll give you the causes for a glow plug light that comes on on your Volkswagen Golf 7 without you feeling any difference in power or motor vehicle behaviour. Generally, this is an electronic problem:

  • 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 trouble.
  • You have a false contact somewhere in your electrical circuit, test out the other options first because it is not easy to find it alone, we advise you to go to your repair shop.
  • Faulty injection pressure sensor, ECU error
  • To find more tips on the Volkswagen Golf 7, take a look at the Volkswagen Golf 7 category.