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

glow-plug-light-hyundai-tucson

What is the goal of my Hyundai Tucson glow plug light?

The main purpose of the engine glow plug light, which is in most cases represented by a yellow coil, is to ensure that your glow plugs are working correctly. In fact, it must light up when you switch on your Hyundai Tucson 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 automobile. Nevertheless, if it comes on while driving, it may suggest multiple issues, we will try to describe the main ones.

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

A glow light that comes on while driving on your Hyundai Tucson or at any other time other than when the engine is started is intended to warn you to a fault other than your spark plugs, we will take a look at this right now. Whatever the case, plug in your car to the diagnostic tool will allow you to accurately interpret the explanation for the light up of your glow light.

My Hyundai Tucson glow light comes on and I’m encountering a loss of power

The first situation is that you detect that your glow plug light comes on while driving your Hyundai Tucson and that you also encounter a loss of power. In such a case, several complications can describe its lightning. Here is a list of the main reasons:

  • Issue of EGR valve, in fact, if you undergo a loss of power, it is possible that your EGR valve is clogged, in this case, it is logical that your preheat light comes on while driving on Hyundai Tucson because it is one of the problem of which it is meant to notify you. Have the status of your valve looked at
  • Trouble linked to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can result in turbo boost and a perturbation in the performance of the turbo.
  • Trouble in connection with the injection, either an injector that has seized up or the injection pump that is broken by filings or other possible foreign bodies that disturb its proper functioning.
  • Finally, the last issue that could lead to a glow indicator light on your Hyundai Tucson coupled with a loss of power, is that your fuel filter is too dirty, you should encounter 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 Tucson

To conclude, we’ll give you the motives for a glow plug light that comes on on your Hyundai Tucson without you feeling any difference in power or automobile 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 solve the issue.
  • You have a false contact somewhere in your electrical circuit, test the other solutions first because it is not easy to find it alone, we suggest you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error

    • If you need more guides on the Hyundai Tucson, go to our Hyundai Tucson category.