A new warning light on your dashboard? You don’t figure out why it doesn’t turn off… It’s normal, a car is elaborate and there are many causes why a light may come on. If it turns out your glow plug light comes on while driving your Renault Scenic 4, it may possibly suggest different things. In this article, we will do anything we can to support you see things more clearly. First, we will see how the preheating light on your Renault Scenic 4 operates, and then the different explanations it lights up when you are driving

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What is the goal of my Renault Scenic 4 glow plug light?

The main goal of the engine glow plug light, which is most of the time symbolized by a yellow coil, is to assure that your glow plugs are working properly. Indeed, it must light up when you switch on your Renault Scenic 4 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 car. But, if it turns on while driving, it may indicate several troubles, we will try to point out the most important ones.

What to do if the glow plug light comes on while driving on my Renault Scenic 4?

A glow light that comes on while driving on your Renault Scenic 4 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 look at this right now. No matter the reason, connecting your vehicle to the diagnostic tool will allow you to accurately interpret the motive for the light up of your glow light.

My Renault Scenic 4 glow light comes on and I’m suffering from a loss of power

The first situation is that you detect that your glow plug light comes on while driving your Renault Scenic 4 and that you also experience a loss of power. In such a case, different concerns can describe its presence. Here is a list of the most important causes:

  • Trouble of EGR valve, in fact, if you are affected a loss of power, it is possible that your EGR valve is blocked, in such a case, it is logical that your preheat light comes on while driving on Renault Scenic 4 because it is one of the problem of which it is designed to notify you. Have the status of your valve examined
  • Problem linked to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can lead to turbo boost and a perturbation in the performance of the turbo.
  • Problem associated with 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 functioning.
  • Finally, the last trouble that could lead to a glow indicator light on your Renault Scenic 4 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 Scenic 4

To conclude, we’ll give you the explanations for a glow plug light that comes on on your Renault Scenic 4 without you feeling any difference in power or car behaviour. In most cases, 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 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 Renault Scenic 4, take a look at the Renault Scenic 4 category.