A new light on your dashboard? You don’t figure out why it doesn’t shut off… It’s normal, an auto is complicated and there are many causes why a light might occur. If it turns out your glow plug light comes on while driving your Renault Master, it may possibly signal some concerns. In this article, we will do anything we can to help you see things more clearly. First, we will discover how the preheating light on your Renault Master works, and then the different causes it lights up when you are driving

glow-plug-light-renault-master

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

The main intent of the engine glow plug light, which is generally symbolized by a yellow coil, is to assure that your glow plugs are working effectively. In reality, it must light up when you switch on your Renault Master 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 car. However, if it turns on while driving, it may reveal different issues, we will try to detail the most important ones.

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

A glow light that comes on while driving on your Renault Master or at any other time other than when the engine is started is designed to inform you to a problem other than your spark plugs, we will look at this now. Whatever the case, plug in your car to the diagnostic tool will allow you to properly understand the reason for the light up of your glow light.

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

The first probability is that you detect that your glow plug light comes on while driving your Renault Master and that you also experience a loss of power. In this case, some concerns can demonstrate 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 clogged, in such a case, it is expected that your preheat light comes on while driving on Renault Master because it is one of the issue of which it is designed to notify you. Have the status of your valve checked out
  • Problem related to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can bring about turbo boost and a perturbation in the operation of the turbo.
  • Problem associated with the injection, either an injector that has seized up or the injection pump that is destroyed by filings or other possible foreign bodies that affect its proper performing.
  • Finally, the last issue that could lead to a glow indicator light on your Renault Master 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 Master

To conclude, we’ll give you the causes for a glow plug light that comes on on your Renault Master without you feeling any difference in power or car behaviour. In most cases, this is an electronic problem:

  • 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 get rid of the issue.
  • 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 advise you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error

    • To find more tips on the Renault Master, take a look at the Renault Master category.