A new light on your dashboard? You don’t understand why it doesn’t turn off… It’s typical, a vehicle is complicated and there are multiple motives why a light might occur. If it turns out your glow plug light comes on while driving your Renault Laguna 2, it might indicate different 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 Laguna 2 operates, and then the different explanations it lights up when you are driving

glow-plug-light-renault-laguna-2

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

The main role 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. In fact, it must light up when you switch on your Renault Laguna 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 meant to stay or come on while driving with your vehicle. But, if it turns on while driving, it may reveal different failures, we will try to explain the main ones.

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

A glow light that comes on while driving on your Renault Laguna 2 or at any other time other than when the engine is started is intended to notify you to a fault other than your spark plugs, we will look at this right now. No matter the reason, plug in your car to the diagnostic tool will allow you to properly interpret the reason for the light up of your glow light.

My Renault Laguna 2 glow light comes on and I’m encountering a loss of power

The first probability is that you perceive that your glow plug light comes on while driving your Renault Laguna 2 and that you also experience a loss of power. In this instance, different concerns can demonstrate its presence. Here is a list of the main motives:

  • Trouble of EGR valve, in reality, if you undergo a loss of power, it is possible that your EGR valve is clogged, in this instance, it is logical that your preheat light comes on while driving on Renault Laguna 2 because it is one of the failures of which it is expected to warn you. Have the status of your valve checked
  • Issue related to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can cause turbo boost and a disturbance in the performance of the turbo.
  • Issue 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 disturb its proper performance.
  • Finally, the last issue that could lead to a glow indicator light on your Renault Laguna 2 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 Laguna 2

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

  • Glow plug relays or fuses to be swapped out, 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 fix the issue.
  • You have a false contact somewhere in your electrical circuit, check the other alternatives first because it is not easy to find it alone, we suggest you to go to your technician.
  • Faulty injection pressure sensor, ECU error

    • Whenever you have any further questions about the Renault Laguna 2, do not hesitate to consult our Renault Laguna 2 category.