A new light on your dashboard? You don’t find out why it doesn’t switch off… It’s typical, an automobile is complicated and there are various reasons why a light may come on. In cases where your glow plug light comes on while driving your Toyota Aygo 2, it might signal different concerns. On this page, we will do everything we can to help you see things more clearly. First, we will see how the preheating light on your Toyota Aygo 2 operates, and then the different reasons it lights up when you are driving

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What is the purpose of my Toyota Aygo 2 glow plug light?

The primary purpose of the engine glow plug light, which is generally symbolized by a yellow coil, is to make sure that your glow plugs are working properly. Indeed, it must light up when you switch on your Toyota Aygo 2 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. Nevertheless, if it turns on while driving, it may suggest different troubles, we will try to point out the most important ones.

What to do if the glow plug light comes on while driving on my Toyota Aygo 2?

A glow light that comes on while driving on your Toyota Aygo 2 or at any other time other than when the engine is started is designed to warn you to a fault other than your spark plugs, we will take a look at this right now. In any case, a switch to the diagnostic tool will allow you to precisely understand the explanation for the light up of your glow light.

My Toyota Aygo 2 glow light comes on and I’m experiencing a loss of power

The first probability is that you recognize that your glow plug light comes on while driving your Toyota Aygo 2 and that you also knowledge a loss of power. In such a case, different concerns can explain its lightning. Here is a list of the most important reasons:

  • Problem of EGR valve, in fact, if you undergo a loss of power, it is possible that your EGR valve is blocked, in this case, it is rational that your preheat light comes on while driving on Toyota Aygo 2 because it is one of the problem of which it is supposed to alert you. Have the status of your valve tested
  • Issue 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 operation of the turbo.
  • Issue related to the injection, either an injector that has seized up or the injection pump that is broken 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 Toyota Aygo 2 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 Toyota Aygo 2

To conclude, we’ll give you the reasons for a glow plug light that comes on on your Toyota Aygo 2 without you feeling any difference in power or motor vehicle behaviour. In general, 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 fix the problem.
  • You have a false contact somewhere in your electrical circuit, test out 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

    • If perhaps you have any additional questions about the Toyota Aygo 2, do not hesitate to consult our Toyota Aygo 2 category.