A new warning light on your dashboard? You don’t understand why it doesn’t switch off… It’s typical, an auto is complex and there are multiple reasons why a light might occur. In cases where your glow plug light comes on while driving your Bmw Serie 1 F20, it may possibly signal some problems. In the following paragraphs, we will do everything we can to help you see things more clearly. First, we will see how the preheating light on your Bmw Serie 1 F20 functions, and then the different causes it lights up when you are driving

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What is the goal of my Bmw Serie 1 F20 glow plug light?

The primary intent of the engine glow plug light, which is generally represented by a yellow coil, is to ensure that your glow plugs are working effectively. Indeed, it must light up when you switch on your Bmw Serie 1 F20 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 expected to stay or come on while driving with your car. However, if it comes on while driving, it may reveal multiple 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 Serie 1 F20?

A glow light that comes on while driving on your Bmw Serie 1 F20 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 look at this now. In any case, connecting your vehicle to the diagnostic tool will allow you to properly interpret the explanation for the light up of your glow light.

My Bmw Serie 1 F20 glow light comes on and I’m having a loss of power

The first probability is that you detect that your glow plug light comes on while driving your Bmw Serie 1 F20 and that you also encounter a loss of power. In such a case, some complications can demonstrate its presence. Here is a list of the most important reasons:

  • Trouble of EGR valve, indeed, if you go through a loss of power, it is possible that your EGR valve is clogged, in such a case, it is logical that your preheat light comes on while driving on Bmw Serie 1 F20 because it is one of the problem of which it is intended to warn you. Have the status of your valve looked at
  • Issue 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 disturbance in the operation 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 disturb its proper performing.
  • Finally, the last issue that could lead to a glow indicator light on your Bmw Serie 1 F20 coupled with a loss of power, is that your fuel filter is too dirty, you should come to feel 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 F20

To conclude, we’ll give you the causes for a glow plug light that comes on on your Bmw Serie 1 F20 without you feeling any difference in power or car behaviour. In most cases, this is an electronic fault:

  • Glow plug relays or fuses to be replaced, 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 resolve the issue.
  • You have a false contact somewhere in your electrical circuit, test out the other alternatives first because it is not easy to find it alone, we recommend you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error
  • Whenever you have any further questions about the Bmw Serie 1 F20, do not hesitate to consult our Bmw Serie 1 F20 category.