A new warning light on your dashboard? You don’t understand why it doesn’t shut off… It’s typical, a vehicle is complex and there are various reasons why a light may occur. In cases where your glow plug light comes on while driving your Mercury Milan, it may possibly signal several concerns. In this post, we will do everything we can to help you see things more clearly. First, we will find out how the preheating light on your Mercury Milan works, and then the different explanations it lights up when you are driving

glow-plug-light-mercury-milan

What is the purpose of my Mercury Milan glow plug light?

The primary purpose of the engine glow plug light, which is generally symbolized by a yellow coil, is to assure that your glow plugs are working correctly. Indeed, it must light up when you switch on your Mercury Milan to tell you that they are heating the intake air in your cylinders and must go out after a few minutes when the engine is running. This preheat light is therefore not meant to stay or come on while driving with your motor vehicle. But, if it comes on while driving, it may show several issues, we will try to point out the main ones.

What to do if the glow plug light comes on while driving on my Mercury Milan?

A glow light that comes on while driving on your Mercury Milan or at any other time other than when the engine is started is intended to notify you to a problem other than your spark plugs, we will take a look at this right now. Whatever the case, connecting your vehicle to the diagnostic tool will allow you to carefully translate the reason for the light up of your glow light.

My Mercury Milan glow light comes on and I’m experiencing a loss of power

The first possibility is that you detect that your glow plug light comes on while driving your Mercury Milan and that you also encounter a loss of power. In such a case, several complications can demonstrate its lightning. Here is a list of the main reasons:

  • Issue of EGR valve, in fact, if you go through 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 Mercury Milan because it is one of the issue of which it is intended to notify you. Have the status of your valve tested
  • Trouble 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.
  • Trouble 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 issue that could lead to a glow indicator light on your Mercury Milan coupled with a loss of power, is that your fuel filter is too dirty, you should 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 Mercury Milan

Finally, we’ll give you the explanations for a glow plug light that comes on on your Mercury Milan without you feeling any difference in power or motor vehicle behaviour. In general, this is an electronic problem:

  • Glow plug relays or fuses to be swapped out, 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 get rid of the issue.
  • 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 suggest you to go to your repair shop.
  • Faulty injection pressure sensor, ECU error
  • To discover more tips on the Mercury Milan, take a look at the Mercury Milan category.