A new light on your dashboard? You don’t understand why it doesn’t turn off… It’s normal, an automobile is complicated and there are many reasons why a light might occur. In the event that your glow plug light comes on while driving your Volkswagen Crafter, it may show some problems. In the following paragraphs, we will do everything we can to support you see things more clearly. First, we will see how the preheating light on your Volkswagen Crafter works, and then the different explanations it lights up when you are driving

glow-plug-light-volkswagen-crafter

What is the role of my Volkswagen Crafter 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 make sure that your glow plugs are working effectively. In reality, it must light up when you switch on your Volkswagen Crafter 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 meant to stay or come on while driving with your motor vehicle. But, if it turns on while driving, it may reveal several failures, we will try to summarize the most important ones.

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

A glow light that comes on while driving on your Volkswagen Crafter 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 take a look at this now. Whatever the case, a switch to the diagnostic tool will allow you to properly translate the explanation for the light up of your glow light.

My Volkswagen Crafter glow light comes on and I’m experiencing a loss of power

The first situation is that you detect that your glow plug light comes on while driving your Volkswagen Crafter and that you also knowledge a loss of power. In such a case, some trouble can explain its lightning. Here is a list of the most important reasons:

  • Trouble of EGR valve, in reality, if you suffer a loss of power, it is possible that your EGR valve is clogged, in this instance, it is obvious that your preheat light comes on while driving on Volkswagen Crafter because it is one of the issue of which it is supposed to notify you. Have the status of your valve examined
  • Trouble associated with the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can bring about turbo boost and a perturbation 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 damaged by filings or other possible foreign bodies that disturb its proper performing.
  • Finally, the last problem that could lead to a glow indicator light on your Volkswagen Crafter 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 Crafter

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

  • Glow plug relays or fuses to be swapped out, 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, check 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

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