A new warning light on your dashboard? You don’t find out why it doesn’t switch off… It’s typical, a vehicle is complex and there are many reasons why a light might occur. In the event that your glow plug light comes on while driving your Renault Modus, it might point out several concerns. In the following paragraphs, we will do everything we can to help you see things more clearly. First, we will discover how the preheating light on your Renault Modus operates, and then the different explanations it lights up when you are driving

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What is the purpose of my Renault Modus glow plug light?

The main goal of the engine glow plug light, which is in most cases represented by a yellow coil, is to ensure that your glow plugs are working properly. In fact, it must light up when you switch on your Renault Modus 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 car. However, if it comes on while driving, it may reveal multiple failures, we will try to detail the most important ones.

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

A glow light that comes on while driving on your Renault Modus or at any other time other than when the engine is started is meant to warn you to a problem other than your spark plugs, we will look at this now. Whatever the case, connecting your vehicle to the diagnostic tool will allow you to carefully understand the reason for the light up of your glow light.

My Renault Modus glow light comes on and I’m experiencing a loss of power

The first probability is that you identify that your glow plug light comes on while driving your Renault Modus and that you also experience a loss of power. In such a case, several problems can describe its lightning. Here is a list of the most important reasons:

  • Trouble of EGR valve, in fact, if you go through a loss of power, it is possible that your EGR valve is blocked, in this instance, it is obvious that your preheat light comes on while driving on Renault Modus because it is one of the failures of which it is meant to notify you. Have the status of your valve tested
  • Problem related 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 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 destroyed by filings or other possible foreign bodies that disrupt its proper function.
  • Finally, the last trouble that could lead to a glow indicator light on your Renault Modus 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 Renault Modus

To finish , we’ll give you the explanations for a glow plug light that comes on on your Renault Modus without you feeling any difference in power or car behaviour. Generally, 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 resolve the trouble.
  • 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 suggest you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error

    • To discover more tips on the Renault Modus, take a look at the Renault Modus category.