A new warning light on your dashboard? You don’t find out why it doesn’t shut off… It’s typical, an automobile is complicated and there are multiple motives why a light may occur. In the event that your glow plug light comes on while driving your Cadillac XT5, it may possibly signal different things. On this page, we will do anything we can to support you see things more clearly. First, we will see how the preheating light on your Cadillac XT5 works, and then the different explanations it lights up when you are driving

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What is the role of my Cadillac XT5 glow plug light?

The main role of the engine glow plug light, which is most of the time represented by a yellow coil, is to guarantee that your glow plugs are working effectively. In reality, it must light up when you switch on your Cadillac XT5 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 motor vehicle. But, if it turns on while driving, it may suggest several issues, we will try to summarize the most important ones.

What to do if the glow plug light comes on while driving on my Cadillac XT5?

A glow light that comes on while driving on your Cadillac XT5 or at any other time other than when the engine is started is meant to alert you to a fault other than your spark plugs, we will look at this now. Whatever the case, plug in your car to the diagnostic tool will allow you to carefully translate the explanation for the light up of your glow light.

My Cadillac XT5 glow light comes on and I’m going through a loss of power

The first situation is that you perceive that your glow plug light comes on while driving your Cadillac XT5 and that you also knowledge a loss of power. In this instance, different trouble can explain its presence. Here is a list of the most important motives:

  • Trouble of EGR valve, in fact, if you suffer a loss of power, it is possible that your EGR valve is blocked, in such a case, it is obvious that your preheat light comes on while driving on Cadillac XT5 because it is one of the problem of which it is supposed to alert you. Have the status of your valve tested
  • Issue related to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can cause turbo boost and a disturbance in the performance of the turbo.
  • Issue related 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 disrupt its proper functioning.
  • Finally, the last issue that could lead to a glow indicator light on your Cadillac XT5 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 Cadillac XT5

To conclude, we’ll give you the explanations for a glow plug light that comes on on your Cadillac XT5 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 change 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 solve the issue.
  • You have a false contact somewhere in your electrical circuit, check the other alternatives first because it is not easy to find it alone, we suggest you to go to your repair shop.
  • Faulty injection pressure sensor, ECU error

    • In the event that you have any further questions about the Cadillac XT5, do not hesitate to consult our Cadillac XT5 category.