A new warning light on your dashboard? You don’t figure out why it doesn’t switch off… It’s normal, an automobile is complex and there are various motives why a light may come on. If it turns out your glow plug light comes on while driving your BMW 2 Series, it may reveal different issues. In this article, we will do everything we can to help you see things more clearly. First, we will see how the preheating light on your BMW 2 Series works, and then the different reasons it lights up when you are driving

glow-plug-light-bmw-2-series

What is the goal of my BMW 2 Series glow plug light?

The main role of the engine glow plug light, which is generally symbolized by a yellow coil, is to ensure that your glow plugs are working effectively. In reality, it must light up when you switch on your BMW 2 Series 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 supposed to stay or come on while driving with your motor vehicle. However, if it comes on while driving, it may reveal different failures, we will try to describe the most important ones.

What to do if the glow plug light comes on while driving on my BMW 2 Series?

A glow light that comes on while driving on your BMW 2 Series or at any other time other than when the engine is started is designed 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 understand the cause for the light up of your glow light.

My BMW 2 Series glow light comes on and I’m going through a loss of power

The first possibility is that you recognize that your glow plug light comes on while driving your BMW 2 Series and that you also encounter a loss of power. In such a case, different complications can demonstrate its lightning. Here is a list of the most important motives:

  • Trouble of EGR valve, indeed, if you suffer a loss of power, it is possible that your EGR valve is clogged, in such a case, it is obvious that your preheat light comes on while driving on BMW 2 Series because it is one of the issue of which it is intended to warn you. Have the status of your valve inspected
  • Problem linked to 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 disturbance in the performance of the turbo.
  • Problem in connection with the injection, either an injector that has seized up or the injection pump that is damaged by filings or other possible foreign bodies that affect its proper function.
  • Finally, the last problem that could lead to a glow indicator light on your BMW 2 Series 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 BMW 2 Series

To conclude, we’ll give you the reasons for a glow plug light that comes on on your BMW 2 Series without you feeling any difference in power or motor vehicle 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 problem.
  • 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 auto mechanic.
  • Faulty injection pressure sensor, ECU error

    • If you need more tutorials on the BMW 2 Series, go to our BMW 2 Series category.