A new warning light on your dashboard? You don’t understand why it doesn’t shut off… It’s typical, an automobile is complicated and there are many causes why a light could come on. If your glow plug light comes on while driving your Audi Q5, it might indicate different concerns. In the following paragraphs, we will do everything we can to support you see things more clearly. First, we will discover how the preheating light on your Audi Q5 operates, and then the different causes it lights up when you are driving

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What is the goal of my Audi Q5 glow plug light?

The main purpose 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. Indeed, it must light up when you switch on your Audi Q5 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 indicate different failures, we will try to describe the main ones.

What to do if the glow plug light comes on while driving on my Audi Q5?

A glow light that comes on while driving on your Audi Q5 or at any other time other than when the engine is started is intended to inform you to a fault other than your spark plugs, we will look at this right now. In any case, connecting your vehicle to the diagnostic tool will allow you to precisely translate the cause for the light up of your glow light.

My Audi Q5 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 Q5 and that you also experience a loss of power. In this case, different complications can describe its lightning. Here is a list of the main causes:

  • Issue of EGR valve, in fact, if you go through 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 Audi Q5 because it is one of the issue of which it is intended to alert you. Have the status of your valve tested
  • Problem related to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can cause turbo boost and a perturbation in the performance of the turbo.
  • Problem associated with the injection, either an injector that has seized up or the injection pump that is damaged by filings or other possible foreign bodies that disturb its proper functioning.
  • Finally, the last trouble that could lead to a glow indicator light on your Audi Q5 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 Q5

To finish , we’ll give you the causes for a glow plug light that comes on on your Audi Q5 without you feeling any difference in power or automobile behaviour. Ordinarily, this is an electronic fault:

  • 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 fix the trouble.
  • You have a false contact somewhere in your electrical circuit, check the other solutions first because it is not easy to find it alone, we encourage you to go to your repair shop.
  • Faulty injection pressure sensor, ECU error

    • To discover more tips on the Audi Q5, take a look at the Audi Q5 category.