A new warning light on your dashboard? You don’t understand why it doesn’t shut off… It’s typical, an auto is complex and there are many causes why a light might occur. If it turns out your glow plug light comes on while driving your Hyundai Elantra, it may point out several problems. In the following paragraphs, we will do anything we can to support you see things more clearly. First, we will find out how the preheating light on your Hyundai Elantra works, and then the different causes it lights up when you are driving

glow-plug-light-hyundai-elantra

What is the purpose of my Hyundai Elantra glow plug light?

The primary intent of the engine glow plug light, which is generally represented by a yellow coil, is to make sure that your glow plugs are working properly. In reality, it must light up when you switch on your Hyundai Elantra 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 car. But, if it turns on while driving, it may show different troubles, we will try to summarize the most important ones.

What to do if the glow plug light comes on while driving on my Hyundai Elantra?

A glow light that comes on while driving on your Hyundai Elantra or at any other time other than when the engine is started is intended to notify you to a problem other than your spark plugs, we will take a look at this right now. In any case, connecting your vehicle to the diagnostic tool will allow you to carefully understand the explanation for the light up of your glow light.

My Hyundai Elantra glow light comes on and I’m going through a loss of power

The first situation is that you recognize that your glow plug light comes on while driving your Hyundai Elantra and that you also experience a loss of power. In this instance, several concerns can explain its presence. Here is a list of the most important causes:

  • Trouble of EGR valve, in reality, if you go through 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 Hyundai Elantra because it is one of the failures of which it is meant to warn you. Have the status of your valve tested
  • 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 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 performance.
  • Finally, the last trouble that could lead to a glow indicator light on your Hyundai Elantra 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 Hyundai Elantra

Finally, we’ll give you the causes for a glow plug light that comes on on your Hyundai Elantra without you feeling any difference in power or car behaviour. Generally, 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 fix the trouble.
  • You have a false contact somewhere in your electrical circuit, test the other alternatives first because it is not easy to find it alone, we encourage you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error

    • If you wish more guides on the Hyundai Elantra, go to our Hyundai Elantra category.