A new light on your dashboard? You don’t find out why it doesn’t turn off… It’s typical, an automobile is complicated and there are many reasons why a light could occur. In cases where your glow plug light comes on while driving your PORSCHE BOXSTER, it may suggest different concerns. In this article, we will do anything we can to help you see things more clearly. First, we will see how the preheating light on your PORSCHE BOXSTER works, and then the different reasons it lights up when you are driving

glow-plug-light-porsche-boxster

What is the goal of my PORSCHE BOXSTER glow plug light?

The main goal of the engine glow plug light, which is most of the time represented by a yellow coil, is to ensure that your glow plugs are working properly. Indeed, it must light up when you switch on your PORSCHE BOXSTER 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 supposed to stay or come on while driving with your vehicle. However, if it comes on while driving, it may indicate different issues, we will try to explain the most important ones.

What to do if the glow plug light comes on while driving on my PORSCHE BOXSTER?

A glow light that comes on while driving on your PORSCHE BOXSTER or at any other time other than when the engine is started is intended to inform you to a problem other than your spark plugs, we will check out this now. Whatever the case, connecting your vehicle to the diagnostic tool will allow you to properly understand the reason for the light up of your glow light.

My PORSCHE BOXSTER glow light comes on and I’m suffering from a loss of power

The first probability is that you identify that your glow plug light comes on while driving your PORSCHE BOXSTER and that you also encounter a loss of power. In such a case, different problems can describe its presence. Here is a list of the most important reasons:

  • Problem of EGR valve, indeed, if you go through a loss of power, it is possible that your EGR valve is clogged, in this instance, it is expected that your preheat light comes on while driving on PORSCHE BOXSTER because it is one of the problem of which it is expected to alert you. Have the status of your valve examined
  • Issue linked to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can lead to turbo boost and a perturbation in the operation of the turbo.
  • Issue linked 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 performing.
  • Finally, the last issue that could lead to a glow indicator light on your PORSCHE BOXSTER coupled with a loss of power, is that your fuel filter is too dirty, you should 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 PORSCHE BOXSTER

To conclude, we’ll give you the reasons for a glow plug light that comes on on your PORSCHE BOXSTER without you feeling any difference in power or vehicle behaviour. In most cases, this is an electronic problem:

  • 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 issue.
  • You have a false contact somewhere in your electrical circuit, test the other alternatives first because it is not easy to find it alone, we recommend you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error

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