A new warning light on your dashboard? You don’t figure out why it doesn’t switch off… It’s normal, a vehicle is complicated and there are multiple reasons why a light might come on. In cases where your glow plug light comes on while driving your Toyota Auris, it may signal different things. On this page, we will do anything we can to help you see things more clearly. First, we will discover how the preheating light on your Toyota Auris works, and then the different reasons it lights up when you are driving

glow-plug-light-toyota-auris

What is the purpose of my Toyota Auris glow plug light?

The primary goal 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 Toyota Auris 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 automobile. Nevertheless, if it comes on while driving, it may indicate multiple issues, we will try to explain the main ones.

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

A glow light that comes on while driving on your Toyota Auris 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. Whatever the case, connecting your vehicle to the diagnostic tool will allow you to precisely translate the cause for the light up of your glow light.

My Toyota Auris glow light comes on and I’m suffering from a loss of power

The first situation is that you detect that your glow plug light comes on while driving your Toyota Auris 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 reasons:

  • Trouble of EGR valve, indeed, if you suffer a loss of power, it is possible that your EGR valve is blocked, in this instance, it is rational that your preheat light comes on while driving on Toyota Auris because it is one of the issue of which it is expected to warn you. Have the status of your valve tested
  • Trouble related to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can lead to turbo boost and a disturbance in the operation of the turbo.
  • Trouble linked to the injection, either an injector that has seized up or the injection pump that is broken by filings or other possible foreign bodies that disrupt its proper operation.
  • Finally, the last trouble that could lead to a glow indicator light on your Toyota Auris 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 Toyota Auris

To conclude, we’ll give you the reasons for a glow plug light that comes on on your Toyota Auris without you feeling any difference in power or automobile behaviour. In most cases, 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 resolve the trouble.
  • You have a false contact somewhere in your electrical circuit, test out the other solutions 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 need more tutorials on the Toyota Auris, go to our Toyota Auris category.