A new light on your dashboard? You don’t figure out why it doesn’t switch off… It’s normal, an automobile is complicated and there are many causes why a light may occur. In cases where your glow plug light comes on while driving your Jeep Patriot, it may possibly indicate different concerns. In the following paragraphs, we will do anything we can to help you see things more clearly. First, we will see how the preheating light on your Jeep Patriot operates, and then the different explanations it lights up when you are driving

glow-plug-light-jeep-patriot

What is the role of my Jeep Patriot 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 properly. In reality, it must light up when you switch on your Jeep Patriot 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 car. However, if it comes on while driving, it may show multiple failures, we will try to point out the most important ones.

What to do if the glow plug light comes on while driving on my Jeep Patriot?

A glow light that comes on while driving on your Jeep Patriot 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 take a look at this right now. No matter the reason, a switch to the diagnostic tool will allow you to properly translate the cause for the light up of your glow light.

My Jeep Patriot glow light comes on and I’m encountering a loss of power

The first possibility is that you notice that your glow plug light comes on while driving your Jeep Patriot and that you also knowledge a loss of power. In such a case, different concerns can explain its lightning. Here is a list of the most important causes:

  • Problem of EGR valve, in reality, 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 Jeep Patriot because it is one of the failures of which it is designed 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 control the turbo intake pressure, which can cause turbo boost and a perturbation in the operation of the turbo.
  • Issue related to the injection, either an injector that has seized up or the injection pump that is damaged by filings or other possible foreign bodies that disrupt its proper performance.
  • Finally, the last trouble that could lead to a glow indicator light on your Jeep Patriot coupled with a loss of power, is that your fuel filter is too dirty, you should encounter 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 Jeep Patriot

To conclude, we’ll give you the explanations for a glow plug light that comes on on your Jeep Patriot without you feeling any difference in power or car behaviour. In general, this is an electronic problem:

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

    • To discover more tips on the Jeep Patriot, take a look at the Jeep Patriot category.