A new warning light on your dashboard? You don’t figure out why it doesn’t switch off… It’s normal, a car is complicated and there are various reasons why a light might come on. In cases where your glow plug light comes on while driving your Renault Trafic, it may possibly indicate several things. In this post, we will do anything we can to support you see things more clearly. First, we will discover how the preheating light on your Renault Trafic operates, and then the different reasons it lights up when you are driving

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What is the goal of my Renault Trafic glow plug light?

The primary goal of the engine glow plug light, which is in most cases represented by a yellow coil, is to make sure that your glow plugs are working correctly. In reality, it must light up when you switch on your Renault Trafic 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 motor vehicle. However, if it comes on while driving, it may reveal several failures, we will try to describe the most important ones.

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

A glow light that comes on while driving on your Renault Trafic or at any other time other than when the engine is started is meant to warn you to a fault other than your spark plugs, we will check out this now. No matter the reason, plug in your car to the diagnostic tool will allow you to accurately translate the explanation for the light up of your glow light.

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

The first possibility is that you perceive that your glow plug light comes on while driving your Renault Trafic and that you also experience a loss of power. In this instance, several problems can explain its lightning. Here is a list of the most important reasons:

  • Issue of EGR valve, in reality, if you suffer a loss of power, it is possible that your EGR valve is blocked, in this instance, it is expected that your preheat light comes on while driving on Renault Trafic because it is one of the failures of which it is supposed to warn you. Have the status of your valve looked at
  • Trouble associated with 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 linked 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 disrupt its proper functioning.
  • Finally, the last problem that could lead to a glow indicator light on your Renault Trafic 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 Trafic

To finish , we’ll give you the reasons for a glow plug light that comes on on your Renault Trafic without you feeling any difference in power or motor vehicle behaviour. In general, 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 fix the problem.
  • You have a false contact somewhere in your electrical circuit, check the other solutions first because it is not easy to find it alone, we recommend you to go to your auto technician.
  • Faulty injection pressure sensor, ECU error

    • If you need more tutorials on the Renault Trafic, go to our Renault Trafic category.