A new warning light on your dashboard? You don’t figure out why it doesn’t shut off… It’s typical, a car is complicated and there are multiple reasons why a light might occur. In cases where your glow plug light comes on while driving your Bmw Serie 3 F30, it may show some 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 Serie 3 F30 works, and then the different causes it lights up when you are driving

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What is the role of my Bmw Serie 3 F30 glow plug light?

The main role of the engine glow plug light, which is generally represented by a yellow coil, is to ensure that your glow plugs are working properly. In reality, it must light up when you switch on your Bmw Serie 3 F30 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 automobile. Nevertheless, if it comes on while driving, it may reveal several troubles, we will try to point out the most important ones.

What to do if the glow plug light comes on while driving on my Bmw Serie 3 F30?

A glow light that comes on while driving on your Bmw Serie 3 F30 or at any other time other than when the engine is started is intended to alert you to a problem other than your spark plugs, we will take a look at this right now. No matter the reason, plug in your car to the diagnostic tool will allow you to properly understand the explanation for the light up of your glow light.

My Bmw Serie 3 F30 glow light comes on and I’m having a loss of power

The first probability is that you identify that your glow plug light comes on while driving your Bmw Serie 3 F30 and that you also experience a loss of power. In such a case, some trouble can describe its presence. Here is a list of the most important reasons:

  • Issue of EGR valve, indeed, if you undergo 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 3 F30 because it is one of the problem of which it is designed to alert you. Have the status of your valve inspected
  • Trouble linked to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can lead to turbo boost and a disturbance in the operation of the turbo.
  • Trouble associated 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 operation.
  • Finally, the last problem that could lead to a glow indicator light on your Bmw Serie 3 F30 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 Serie 3 F30

Finally, we’ll give you the causes for a glow plug light that comes on on your Bmw Serie 3 F30 without you feeling any difference in power or automobile behaviour. In general, this is an electronic problem:

  • Glow plug relays or fuses to be changed, 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 solve the problem.
  • 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 advise you to go to your technician.
  • Faulty injection pressure sensor, ECU error

    • To find more tips on the Bmw Serie 3 F30, take a look at the Bmw Serie 3 F30 category.