A new light on your dashboard? You don’t find out why it doesn’t shut off… It’s typical, an automobile is complex and there are multiple reasons why a light might come on. In the event that your glow plug light comes on while driving your Volkswagen Touran 3, it might indicate different issues. On this page, we will do everything we can to help you see things more clearly. First, we will discover how the preheating light on your Volkswagen Touran 3 functions, and then the different explanations it lights up when you are driving

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What is the goal of my Volkswagen Touran 3 glow plug light?

The primary role of the engine glow plug light, which is most of the time symbolized 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 Touran 3 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 vehicle. However, if it turns on while driving, it may indicate multiple troubles, we will try to describe the most important ones.

What to do if the glow plug light comes on while driving on my Volkswagen Touran 3?

A glow light that comes on while driving on your Volkswagen Touran 3 or at any other time other than when the engine is started is intended to warn you to a fault other than your spark plugs, we will check out this right now. No matter the reason, plug in your car to the diagnostic tool will allow you to precisely understand the motive for the light up of your glow light.

My Volkswagen Touran 3 glow light comes on and I’m going through a loss of power

The first situation is that you identify that your glow plug light comes on while driving your Volkswagen Touran 3 and that you also encounter a loss of power. In this case, different problems can demonstrate its presence. Here is a list of the most important reasons:

  • Trouble of EGR valve, indeed, if you are affected 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 Touran 3 because it is one of the problem of which it is intended to notify you. Have the status of your valve examined
  • Trouble related to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can result in turbo boost and a perturbation in the performance of the turbo.
  • Trouble relevant 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 issue that could lead to a glow indicator light on your Volkswagen Touran 3 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 Touran 3

Finally, we’ll give you the explanations for a glow plug light that comes on on your Volkswagen Touran 3 without you feeling any difference in power or vehicle behaviour. In most cases, this is an electronic fault:

  • Glow plug relays or fuses to be replaced, 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 solve the issue.
  • 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 recommend you to go to your technician.
  • Faulty injection pressure sensor, ECU error

    • If you need more tutorials on the Volkswagen Touran 3, go to our Volkswagen Touran 3 category.