A new warning light on your dashboard? You don’t figure out why it doesn’t shut off… It’s normal, a car is complex and there are various causes why a light might occur. If your glow plug light comes on while driving your Lincoln Navigator, it might reveal some things. In this post, we will do anything we can to help you see things more clearly. First, we will discover how the preheating light on your Lincoln Navigator functions, and then the different motives it lights up when you are driving


What is the goal of my Lincoln Navigator glow plug light?

The primary goal of the engine glow plug light, which is generally represented 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 Lincoln Navigator 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 expected to stay or come on while driving with your motor vehicle. But, if it comes on while driving, it may show different issues, we will try to describe the most important ones.

What to do if the glow plug light comes on while driving on my Lincoln Navigator?

A glow light that comes on while driving on your Lincoln Navigator or at any other time other than when the engine is started is intended to warn you to a fault other than your spark plugs, we will check out this now. In any case, a switch to the diagnostic tool will allow you to accurately understand the explanation for the light up of your glow light.

My Lincoln Navigator glow light comes on and I’m going through a loss of power

The first probability is that you detect that your glow plug light comes on while driving your Lincoln Navigator and that you also experience a loss of power. In this instance, some 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 obvious that your preheat light comes on while driving on Lincoln Navigator because it is one of the issue of which it is meant to notify you. Have the status of your valve checked out
  • Issue associated with 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.
  • Issue relevant to the injection, either an injector that has seized up or the injection pump that is malfunctioned by filings or other possible foreign bodies that affect its proper function.
  • Finally, the last trouble that could lead to a glow indicator light on your Lincoln Navigator 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 Lincoln Navigator

To conclude, we’ll give you the motives for a glow plug light that comes on on your Lincoln Navigator without you feeling any difference in power or motor vehicle behaviour. In most cases, 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 resolve the trouble.
  • You have a false contact somewhere in your electrical circuit, test out the other options first because it is not easy to find it alone, we recommend you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error
  • Whenever you have any further questions about the Lincoln Navigator, do not hesitate to consult our Lincoln Navigator category.