A new light on your dashboard? You don’t figure out why it doesn’t turn off… It’s typical, an auto is elaborate and there are multiple factors why a light could come on. If it turns out your glow plug light comes on while driving your Volkswagen Touran, it may possibly indicate different issues. In the following paragraphs, we will do anything we can to help you see things more clearly. First, we will discover how the preheating light on your Volkswagen Touran works, and then the different motives it lights up when you are driving

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

The primary goal of the engine glow plug light, which is most of the time represented by a yellow coil, is to make sure that your glow plugs are working properly. In fact, it must light up when you switch on your Volkswagen Touran 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 expected to stay or come on while driving with your car. Nevertheless, if it turns on while driving, it may show different troubles, we will try to summarize the main ones.

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

A glow light that comes on while driving on your Volkswagen Touran or at any other time other than when the engine is started is intended to notify you to a fault other than your spark plugs, we will look at this right now. Whatever the case, connecting your vehicle to the diagnostic tool will allow you to carefully understand the explanation for the light up of your glow light.

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

The first possibility is that you notice that your glow plug light comes on while driving your Volkswagen Touran and that you also experience a loss of power. In this instance, different concerns can explain its presence. Here is a list of the main factors:

  • Trouble of EGR valve, indeed, if you suffer a loss of power, it is possible that your EGR valve is clogged, in such a case, it is logical that your preheat light comes on while driving on Volkswagen Touran because it is one of the failures of which it is supposed to alert you. Have the status of your valve checked out
  • Problem linked to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can cause turbo boost and a perturbation in the performance of the turbo.
  • Problem associated with the injection, either an injector that has seized up or the injection pump that is broken by filings or other possible foreign bodies that affect its proper performing.
  • Finally, the last trouble that could lead to a glow indicator light on your Volkswagen Touran coupled with a loss of power, is that your fuel filter is too dirty, you should get 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 Touran

To finish , we’ll give you the motives for a glow plug light that comes on on your Volkswagen Touran 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 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 trouble.
  • You have a false contact somewhere in your electrical circuit, check the other options first because it is not easy to find it alone, we advise you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error

    • To discover more tips on the Volkswagen Touran, take a look at the Volkswagen Touran category.