A new light on your dashboard? You don’t understand why it doesn’t switch off… It’s typical, a vehicle is elaborate and there are multiple causes why a light may occur. In the event that your glow plug light comes on while driving your Toyota C HR, it may possibly signify different things. 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 Toyota C HR operates, and then the different motives it lights up when you are driving

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What is the goal of my Toyota C HR glow plug light?

The main role of the engine glow plug light, which is most of the time represented by a yellow coil, is to guarantee that your glow plugs are working correctly. In fact, it must light up when you switch on your Toyota C HR 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 expected to stay or come on while driving with your vehicle. Nevertheless, if it comes on while driving, it may reveal several troubles, we will try to point out the main ones.

What to do if the glow plug light comes on while driving on my Toyota C HR?

A glow light that comes on while driving on your Toyota C HR or at any other time other than when the engine is started is meant to notify you to a problem other than your spark plugs, we will take a look at this right now. In any case, plug in your car to the diagnostic tool will allow you to precisely translate the reason for the light up of your glow light.

My Toyota C HR glow light comes on and I’m encountering a loss of power

The first possibility is that you identify that your glow plug light comes on while driving your Toyota C HR and that you also encounter a loss of power. In such a case, different trouble can describe its presence. Here is a list of the main causes:

  • Trouble of EGR valve, in reality, if you undergo a loss of power, it is possible that your EGR valve is blocked, in this case, it is rational that your preheat light comes on while driving on Toyota C HR because it is one of the problem of which it is supposed to alert you. Have the status of your valve tested
  • Problem linked to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can lead to turbo boost and a perturbation in the performance of the turbo.
  • Problem linked to 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 performance.
  • Finally, the last issue that could lead to a glow indicator light on your Toyota C HR coupled with a loss of power, is that your fuel filter is too dirty, you should experience 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 Toyota C HR

To finish , we’ll give you the motives for a glow plug light that comes on on your Toyota C HR without you feeling any difference in power or vehicle behaviour. In general, this is an electronic problem:

  • Glow plug relays or fuses to be changed, 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, test out the other alternatives first because it is not easy to find it alone, we encourage you to go to your technician.
  • Faulty injection pressure sensor, ECU error

    • If you want more guides on the Toyota C HR, go to our Toyota C HR category.