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 various factors why a light might come on. In the event that your glow plug light comes on while driving your Jaguar XF, it may signal several problems. In this article, we will do anything we can to help you see things more clearly. First, we will see how the preheating light on your Jaguar XF functions, and then the different explanations it lights up when you are driving

glow-plug-light-jaguar-xf

What is the goal of my Jaguar XF 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 make sure that your glow plugs are working properly. In fact, it must light up when you switch on your Jaguar XF 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 meant to stay or come on while driving with your automobile. Nevertheless, if it turns on while driving, it may suggest different troubles, we will try to describe the most important ones.

What to do if the glow plug light comes on while driving on my Jaguar XF?

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

My Jaguar XF glow light comes on and I’m having a loss of power

The first possibility is that you detect that your glow plug light comes on while driving your Jaguar XF and that you also experience a loss of power. In such a case, several trouble can describe its presence. Here is a list of the most important factors:

  • Problem of EGR valve, indeed, 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 Jaguar XF because it is one of the issue of which it is expected to warn you. Have the status of your valve checked out
  • Issue associated with the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can lead to turbo boost and a perturbation in the performance of the turbo.
  • Issue linked to the injection, either an injector that has seized up or the injection pump that is destroyed by filings or other possible foreign bodies that disturb its proper functioning.
  • Finally, the last issue that could lead to a glow indicator light on your Jaguar XF coupled with a loss of power, is that your fuel filter is too dirty, you should experience 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 Jaguar XF

Finally, we’ll give you the explanations for a glow plug light that comes on on your Jaguar XF without you feeling any difference in power or automobile behaviour. Ordinarily, this is an electronic problem:

  • Glow plug relays or fuses to be replaced, 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 issue.
  • 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 suggest you to go to your technician.
  • Faulty injection pressure sensor, ECU error

    • To get more tips on the Jaguar XF, take a look at the Jaguar XF category.