A new warning light on your dashboard? You don’t understand why it doesn’t turn off… It’s normal, an automobile is complicated and there are multiple causes why a light could come on. In cases where your glow plug light comes on while driving your Bmw Serie 1 F21, it may possibly point out different things. In this article, we will do everything we can to support you see things more clearly. First, we will discover how the preheating light on your Bmw Serie 1 F21 functions, and then the different explanations it lights up when you are driving

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What is the purpose of my Bmw Serie 1 F21 glow plug light?

The main role of the engine glow plug light, which is generally 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 Bmw Serie 1 F21 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 multiple failures, we will try to detail the main ones.

What to do if the glow plug light comes on while driving on my Bmw Serie 1 F21?

A glow light that comes on while driving on your Bmw Serie 1 F21 or at any other time other than when the engine is started is designed to inform you to a fault other than your spark plugs, we will check out this right now. Whatever the case, plug in your car to the diagnostic tool will allow you to precisely interpret the motive for the light up of your glow light.

My Bmw Serie 1 F21 glow light comes on and I’m having a loss of power

The first possibility is that you perceive that your glow plug light comes on while driving your Bmw Serie 1 F21 and that you also knowledge a loss of power. In this instance, different problems can describe its presence. Here is a list of the main causes:

  • Problem of EGR valve, in reality, if you suffer a loss of power, it is possible that your EGR valve is blocked, in this case, it is rational that your preheat light comes on while driving on Bmw Serie 1 F21 because it is one of the failures of which it is designed to notify 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 result in turbo boost and a perturbation in the performance of the turbo.
  • Problem linked 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 disturb its proper performing.
  • Finally, the last trouble that could lead to a glow indicator light on your Bmw Serie 1 F21 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 Bmw Serie 1 F21

To conclude, we’ll give you the explanations for a glow plug light that comes on on your Bmw Serie 1 F21 without you feeling any difference in power or motor vehicle behaviour. Generally, this is an electronic fault:

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

    • To find more tips on the Bmw Serie 1 F21, take a look at the Bmw Serie 1 F21 category.