A new light on your dashboard? You don’t understand why it doesn’t shut off… It’s typical, an automobile is complicated and there are multiple motives why a light might occur. If it turns out your glow plug light comes on while driving your Jeep Compass, it might point out several things. In the following paragraphs, we will do anything we can to support you see things more clearly. First, we will discover how the preheating light on your Jeep Compass operates, and then the different reasons it lights up when you are driving


What is the purpose of my Jeep Compass glow plug light?

The main purpose of the engine glow plug light, which is in most cases symbolized by a yellow coil, is to make sure that your glow plugs are working effectively. Indeed, it must light up when you switch on your Jeep Compass 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. Nevertheless, if it turns on while driving, it may show different issues, we will try to summarize the main ones.

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

A glow light that comes on while driving on your Jeep Compass or at any other time other than when the engine is started is meant to inform you to a fault other than your spark plugs, we will check out this right now. In any case, connecting your vehicle to the diagnostic tool will allow you to properly understand the motive for the light up of your glow light.

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

The first probability is that you recognize that your glow plug light comes on while driving your Jeep Compass and that you also experience a loss of power. In such a case, several concerns can demonstrate its lightning. Here is a list of the main motives:

  • Issue of EGR valve, in fact, if you go through a loss of power, it is possible that your EGR valve is clogged, in this instance, it is obvious that your preheat light comes on while driving on Jeep Compass because it is one of the issue of which it is supposed to alert you. Have the status of your valve looked at
  • Issue associated with the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can result in 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 destroyed by filings or other possible foreign bodies that affect its proper function.
  • Finally, the last issue that could lead to a glow indicator light on your Jeep Compass 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 Compass

Finally, we’ll give you the reasons for a glow plug light that comes on on your Jeep Compass without you feeling any difference in power or motor vehicle behaviour. Generally, 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 get rid of the issue.
  • You have a false contact somewhere in your electrical circuit, check the other solutions first because it is not easy to find it alone, we suggest you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error
  • If you have any further questions about the Jeep Compass, do not hesitate to consult our Jeep Compass category.