A new warning light on your dashboard? You don’t understand why it doesn’t shut off… It’s typical, an automobile is elaborate and there are various causes why a light could occur. If it turns out your glow plug light comes on while driving your Infiniti QX70, it may possibly show several issues. In this post, we will do everything we can to support you see things more clearly. First, we will discover how the preheating light on your Infiniti QX70 operates, and then the different motives it lights up when you are driving

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What is the purpose of my Infiniti QX70 glow plug light?

The main 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 correctly. Indeed, it must light up when you switch on your Infiniti QX70 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 vehicle. But, if it comes on while driving, it may reveal several failures, we will try to describe the most important ones.

What to do if the glow plug light comes on while driving on my Infiniti QX70?

A glow light that comes on while driving on your Infiniti QX70 or at any other time other than when the engine is started is intended to alert you to a problem other than your spark plugs, we will look at this now. In any case, a switch to the diagnostic tool will allow you to accurately interpret the explanation for the light up of your glow light.

My Infiniti QX70 glow light comes on and I’m going through a loss of power

The first possibility is that you detect that your glow plug light comes on while driving your Infiniti QX70 and that you also knowledge a loss of power. In this case, several problems can demonstrate its lightning. Here is a list of the most important causes:

  • Issue of EGR valve, in fact, if you suffer a loss of power, it is possible that your EGR valve is blocked, in this instance, it is expected that your preheat light comes on while driving on Infiniti QX70 because it is one of the failures of which it is supposed to notify you. Have the status of your valve examined
  • Issue related to 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 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 affect its proper operation.
  • Finally, the last problem that could lead to a glow indicator light on your Infiniti QX70 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 Infiniti QX70

To conclude, we’ll give you the motives for a glow plug light that comes on on your Infiniti QX70 without you feeling any difference in power or vehicle behaviour. In most cases, this is an electronic problem:

  • 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 fix the problem.
  • 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 encourage you to go to your repair shop.
  • Faulty injection pressure sensor, ECU error

    • In the event that you have any additional questions about the Infiniti QX70, do not hesitate to consult our Infiniti QX70 category.