A new light on your dashboard? You don’t find out why it doesn’t switch off… It’s normal, a car is elaborate and there are multiple motives why a light could occur. If it turns out your glow plug light comes on while driving your Volvo Xc40, it may indicate some issues. In this post, we will do anything we can to support you see things more clearly. First, we will see how the preheating light on your Volvo Xc40 functions, and then the different motives it lights up when you are driving

glow-plug-light-volvo-xc40

What is the purpose of my Volvo Xc40 glow plug light?

The main purpose of the engine glow plug light, which is most of the time 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 Volvo Xc40 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. However, if it comes on while driving, it may show multiple troubles, we will try to describe the most important ones.

What to do if the glow plug light comes on while driving on my Volvo Xc40?

A glow light that comes on while driving on your Volvo Xc40 or at any other time other than when the engine is started is meant to alert you to a fault other than your spark plugs, we will take a look at this right now. Whatever the case, plug in your car to the diagnostic tool will allow you to accurately translate the explanation for the light up of your glow light.

My Volvo Xc40 glow light comes on and I’m encountering a loss of power

The first probability is that you identify that your glow plug light comes on while driving your Volvo Xc40 and that you also knowledge a loss of power. In this case, some complications can explain its lightning. Here is a list of the most important motives:

  • Problem of EGR valve, in fact, if you undergo a loss of power, it is possible that your EGR valve is clogged, in this instance, it is rational that your preheat light comes on while driving on Volvo Xc40 because it is one of the failures of which it is expected to warn you. Have the status of your valve checked out
  • Problem related to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can cause turbo boost and a perturbation in the performance of the turbo.
  • Problem related to the injection, either an injector that has seized up or the injection pump that is broken by filings or other possible foreign bodies that disrupt its proper operation.
  • Finally, the last trouble that could lead to a glow indicator light on your Volvo Xc40 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 Volvo Xc40

Finally, we’ll give you the motives for a glow plug light that comes on on your Volvo Xc40 without you feeling any difference in power or automobile behaviour. Ordinarily, 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 trouble.
  • You have a false contact somewhere in your electrical circuit, test the other options first because it is not easy to find it alone, we encourage you to go to your auto technician.
  • Faulty injection pressure sensor, ECU error

    • To find more tips on the Volvo Xc40, take a look at the Volvo Xc40 category.