A new light on your dashboard? You don’t understand why it doesn’t shut off… It’s normal, a car is elaborate and there are many motives why a light might come on. If it turns out your glow plug light comes on while driving your Toyota Avalon, it may show different issues. In this post, we will do anything we can to support you see things more clearly. First, we will discover how the preheating light on your Toyota Avalon operates, and then the different motives it lights up when you are driving

glow-plug-light-toyota-avalon

What is the role of my Toyota Avalon glow plug light?

The primary goal of the engine glow plug light, which is in most cases symbolized by a yellow coil, is to ensure that your glow plugs are working correctly. Indeed, it must light up when you switch on your Toyota Avalon 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 supposed to stay or come on while driving with your car. Nevertheless, if it turns on while driving, it may suggest different issues, we will try to detail the main ones.

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

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

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

The first possibility is that you perceive that your glow plug light comes on while driving your Toyota Avalon and that you also knowledge a loss of power. In such a case, different trouble can demonstrate its lightning. Here is a list of the main motives:

  • Issue of EGR valve, indeed, if you go through a loss of power, it is possible that your EGR valve is clogged, in this instance, it is logical that your preheat light comes on while driving on Toyota Avalon because it is one of the problem of which it is meant to alert you. Have the status of your valve examined
  • Trouble 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 disturbance in the performance of the turbo.
  • Trouble relevant to the injection, either an injector that has seized up or the injection pump that is damaged by filings or other possible foreign bodies that disturb its proper function.
  • Finally, the last issue that could lead to a glow indicator light on your Toyota Avalon coupled with a loss of power, is that your fuel filter is too dirty, you should 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 Toyota Avalon

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

  • Glow plug relays or fuses to be replaced, 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 fix 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 encourage you to go to your repair shop.
  • Faulty injection pressure sensor, ECU error
  • Whenever you have any further questions about the Toyota Avalon, do not hesitate to consult our Toyota Avalon category.