A new warning light on your dashboard? You don’t understand why it doesn’t turn off… It’s normal, an auto is complicated and there are various causes why a light may come on. If it turns out your glow plug light comes on while driving your Volkswagen Transporter 6, it may show different issues. In this article, we will do everything we can to support you see things more clearly. First, we will discover how the preheating light on your Volkswagen Transporter 6 works, and then the different causes it lights up when you are driving

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What is the purpose of my Volkswagen Transporter 6 glow plug light?

The main role of the engine glow plug light, which is most of the time represented by a yellow coil, is to assure that your glow plugs are working correctly. In reality, it must light up when you switch on your Volkswagen Transporter 6 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 turns on while driving, it may reveal several troubles, we will try to explain the main ones.

What to do if the glow plug light comes on while driving on my Volkswagen Transporter 6?

A glow light that comes on while driving on your Volkswagen Transporter 6 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 take a look at this right now. In any case, connecting your vehicle to the diagnostic tool will allow you to precisely understand the motive for the light up of your glow light.

My Volkswagen Transporter 6 glow light comes on and I’m having a loss of power

The first possibility is that you notice that your glow plug light comes on while driving your Volkswagen Transporter 6 and that you also experience a loss of power. In such a case, different complications can explain its lightning. Here is a list of the main causes:

  • Trouble of EGR valve, in reality, if you are affected a loss of power, it is possible that your EGR valve is blocked, in this instance, it is expected that your preheat light comes on while driving on Volkswagen Transporter 6 because it is one of the problem of which it is supposed to notify you. Have the status of your valve inspected
  • Problem linked to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can cause turbo boost and a disturbance in the operation of the turbo.
  • Problem related to the injection, either an injector that has seized up or the injection pump that is destroyed by filings or other possible foreign bodies that affect its proper function.
  • Finally, the last problem that could lead to a glow indicator light on your Volkswagen Transporter 6 coupled with a loss of power, is that your fuel filter is too dirty, you should encounter 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 Transporter 6

To conclude, we’ll give you the causes for a glow plug light that comes on on your Volkswagen Transporter 6 without you feeling any difference in power or motor vehicle behaviour. In most cases, this is an electronic fault:

  • Glow plug relays or fuses to be changed, 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, test out the other options first because it is not easy to find it alone, we recommend you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error

    • If you have any further questions about the Volkswagen Transporter 6, do not hesitate to consult our Volkswagen Transporter 6 category.