A new light on your dashboard? You don’t find out why it doesn’t switch off… It’s normal, an auto is complex and there are multiple reasons why a light might occur. If your glow plug light comes on while driving your Renault Scenic, it may possibly indicate different things. In the following paragraphs, we will do anything we can to support you see things more clearly. First, we will discover how the preheating light on your Renault Scenic operates, and then the different explanations it lights up when you are driving

glow-plug-light-renault-scenic

What is the role of my Renault Scenic glow plug light?

The primary role of the engine glow plug light, which is generally symbolized by a yellow coil, is to make sure that your glow plugs are working effectively. In reality, it must light up when you switch on your Renault Scenic 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 motor vehicle. Nevertheless, if it comes on while driving, it may suggest several failures, we will try to summarize the main ones.

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

A glow light that comes on while driving on your Renault Scenic or at any other time other than when the engine is started is intended to warn you to a fault other than your spark plugs, we will look at this right now. No matter the reason, connecting your vehicle to the diagnostic tool will allow you to carefully translate the reason for the light up of your glow light.

My Renault Scenic glow light comes on and I’m going through a loss of power

The first probability is that you recognize that your glow plug light comes on while driving your Renault Scenic and that you also experience a loss of power. In this case, different trouble can demonstrate its lightning. Here is a list of the main reasons:

  • Problem of EGR valve, in fact, if you suffer a loss of power, it is possible that your EGR valve is clogged, in such a case, it is obvious that your preheat light comes on while driving on Renault Scenic because it is one of the failures of which it is meant to warn you. Have the status of your valve looked at
  • Issue 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 disturbance in the operation of the turbo.
  • Issue associated with 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 performance.
  • Finally, the last problem that could lead to a glow indicator light on your Renault Scenic 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 Renault Scenic

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

  • 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 resolve the problem.
  • You have a false contact somewhere in your electrical circuit, test out the other solutions first because it is not easy to find it alone, we advise you to go to your repair shop.
  • Faulty injection pressure sensor, ECU error
  • To discover more tips on the Renault Scenic, take a look at the Renault Scenic category.