A new warning light on your dashboard? You don’t understand why it doesn’t switch off… It’s normal, a vehicle is complicated and there are various reasons why a light could occur. If your glow plug light comes on while driving your Renault Megane 2, it may reveal several concerns. 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 Renault Megane 2 works, and then the different explanations it lights up when you are driving

glow-plug-light-renault-megane-2

What is the goal of my Renault Megane 2 glow plug light?

The main role of the engine glow plug light, which is generally represented by a yellow coil, is to assure that your glow plugs are working effectively. Indeed, it must light up when you switch on your Renault Megane 2 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 vehicle. But, if it turns on while driving, it may show multiple troubles, we will try to point out the main ones.

What to do if the glow plug light comes on while driving on my Renault Megane 2?

A glow light that comes on while driving on your Renault Megane 2 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. No matter the reason, connecting your vehicle to the diagnostic tool will allow you to properly understand the explanation for the light up of your glow light.

My Renault Megane 2 glow light comes on and I’m having a loss of power

The first possibility is that you recognize that your glow plug light comes on while driving your Renault Megane 2 and that you also experience a loss of power. In this case, several concerns can describe its lightning. Here is a list of the main reasons:

  • Problem of EGR valve, indeed, if you go through a loss of power, it is possible that your EGR valve is clogged, in this case, it is logical that your preheat light comes on while driving on Renault Megane 2 because it is one of the problem of which it is expected to warn you. Have the status of your valve checked out
  • Trouble linked 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 operation of the turbo.
  • Trouble related to 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 trouble that could lead to a glow indicator light on your Renault Megane 2 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 Renault Megane 2

Finally, we’ll give you the explanations for a glow plug light that comes on on your Renault Megane 2 without you feeling any difference in power or vehicle behaviour. Generally, this is an electronic fault:

  • 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 trouble.
  • 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 advise you to go to your auto technician.
  • Faulty injection pressure sensor, ECU error

    • If you have any additional questions about the Renault Megane 2, do not hesitate to consult our Renault Megane 2 category.