A new warning light on your dashboard? You don’t find out why it doesn’t turn off… It’s typical, an automobile is elaborate and there are many factors why a light may occur. In cases where your glow plug light comes on while driving your Fiat 500 L, it may possibly signal different issues. In this post, we will do everything we can to support you see things more clearly. First, we will see how the preheating light on your Fiat 500 L operates, and then the different reasons it lights up when you are driving

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What is the goal of my Fiat 500 L glow plug light?

The main goal 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 correctly. In reality, it must light up when you switch on your Fiat 500 L 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 automobile. But, if it comes on while driving, it may suggest multiple troubles, we will try to detail the main ones.

What to do if the glow plug light comes on while driving on my Fiat 500 L?

A glow light that comes on while driving on your Fiat 500 L or at any other time other than when the engine is started is meant to warn you to a problem other than your spark plugs, we will look at this now. Whatever the case, connecting your vehicle to the diagnostic tool will allow you to precisely interpret the reason for the light up of your glow light.

My Fiat 500 L glow light comes on and I’m going through a loss of power

The first probability is that you detect that your glow plug light comes on while driving your Fiat 500 L and that you also knowledge a loss of power. In such a case, different problems can describe its lightning. Here is a list of the main factors:

  • Issue of EGR valve, indeed, if you go through a loss of power, it is possible that your EGR valve is blocked, in this case, it is logical that your preheat light comes on while driving on Fiat 500 L because it is one of the issue of which it is supposed to warn you. Have the status of your valve checked out
  • Issue related to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can result in turbo boost and a perturbation in the performance of the turbo.
  • Issue related to the injection, either an injector that has seized up or the injection pump that is malfunctioned by filings or other possible foreign bodies that disrupt its proper performing.
  • Finally, the last issue that could lead to a glow indicator light on your Fiat 500 L coupled with a loss of power, is that your fuel filter is too dirty, you should experience 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 Fiat 500 L

To finish , we’ll give you the reasons for a glow plug light that comes on on your Fiat 500 L without you feeling any difference in power or automobile behaviour. In general, this is an electronic problem:

  • Glow plug relays or fuses to be swapped out, 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 get rid of 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 suggest you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error

    • If you wish more guides on the Fiat 500 L, go to our Fiat 500 L category.