A new warning light on your dashboard? You don’t find out why it doesn’t shut off… It’s typical, a vehicle is complicated and there are multiple factors why a light may occur. In cases where your glow plug light comes on while driving your Audi Q3, it might signal some concerns. In this article, we will do everything we can to help you see things more clearly. First, we will discover how the preheating light on your Audi Q3 functions, and then the different reasons it lights up when you are driving

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What is the goal of my Audi Q3 glow plug light?

The main intent of the engine glow plug light, which is in most cases symbolized by a yellow coil, is to guarantee that your glow plugs are working properly. Indeed, it must light up when you switch on your Audi Q3 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 automobile. Nevertheless, if it comes on while driving, it may reveal multiple failures, we will try to describe the main ones.

What to do if the glow plug light comes on while driving on my Audi Q3?

A glow light that comes on while driving on your Audi Q3 or at any other time other than when the engine is started is meant to notify you to a fault other than your spark plugs, we will take a look at this right now. No matter the reason, a switch to the diagnostic tool will allow you to accurately interpret the explanation for the light up of your glow light.

My Audi Q3 glow light comes on and I’m going through a loss of power

The first situation is that you identify that your glow plug light comes on while driving your Audi Q3 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 main factors:

  • Trouble of EGR valve, in reality, if you suffer a loss of power, it is possible that your EGR valve is blocked, in this case, it is obvious that your preheat light comes on while driving on Audi Q3 because it is one of the problem of which it is designed to warn you. Have the status of your valve checked out
  • 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 operation of the turbo.
  • Trouble associated with the injection, either an injector that has seized up or the injection pump that is malfunctioned by filings or other possible foreign bodies that disturb its proper performing.
  • Finally, the last trouble that could lead to a glow indicator light on your Audi Q3 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 Audi Q3

Finally, we’ll give you the reasons for a glow plug light that comes on on your Audi Q3 without you feeling any difference in power or automobile behaviour. In general, this is an electronic fault:

  • Glow plug relays or fuses to be changed, 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 trouble.
  • You have a false contact somewhere in your electrical circuit, test the other solutions first because it is not easy to find it alone, we encourage you to go to your auto technician.
  • Faulty injection pressure sensor, ECU error

    • If perhaps you have any additional questions about the Audi Q3, do not hesitate to consult our Audi Q3 category.