A new light on your dashboard? You don’t understand why it doesn’t switch off… It’s normal, a car is complex and there are many reasons why a light might come on. In the event that your glow plug light comes on while driving your Toyota Aygo, it may suggest different 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 Toyota Aygo works, and then the different explanations it lights up when you are driving

glow-plug-light-toyota-aygo

What is the role of my Toyota Aygo 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 properly. In fact, it must light up when you switch on your Toyota Aygo 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 expected to stay or come on while driving with your car. However, if it comes on while driving, it may indicate multiple failures, we will try to detail the most important ones.

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

A glow light that comes on while driving on your Toyota Aygo or at any other time other than when the engine is started is designed to inform you to a problem other than your spark plugs, we will look at this right now. No matter the reason, plug in your car to the diagnostic tool will allow you to carefully understand the motive for the light up of your glow light.

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

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

  • Issue of EGR valve, in reality, if you go through a loss of power, it is possible that your EGR valve is blocked, in this instance, it is rational that your preheat light comes on while driving on Toyota Aygo because it is one of the issue of which it is intended to notify you. Have the status of your valve tested
  • Issue associated with the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can bring about turbo boost and a disturbance in the performance of the turbo.
  • Issue relevant to the injection, either an injector that has seized up or the injection pump that is damaged by filings or other possible foreign bodies that affect its proper operation.
  • Finally, the last trouble that could lead to a glow indicator light on your Toyota Aygo 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 Toyota Aygo

To conclude, we’ll give you the explanations for a glow plug light that comes on on your Toyota Aygo without you feeling any difference in power or car behaviour. Generally, this is an electronic problem:

  • 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 resolve the trouble.
  • 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 advise you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error

    • To discover more tips on the Toyota Aygo, take a look at the Toyota Aygo category.