A new light on your dashboard? You don’t understand why it doesn’t switch off… It’s normal, a vehicle is complicated and there are various motives why a light may occur. If it turns out your glow plug light comes on while driving your Toyota RAV4, it may possibly show different issues. In this article, we will do everything we can to help you see things more clearly. First, we will see how the preheating light on your Toyota RAV4 works, and then the different explanations it lights up when you are driving


What is the purpose of my Toyota RAV4 glow plug light?

The main intent 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 properly. In reality, it must light up when you switch on your Toyota RAV4 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 expected to stay or come on while driving with your motor vehicle. However, if it comes on while driving, it may indicate multiple issues, we will try to point out the most important ones.

What to do if the glow plug light comes on while driving on my Toyota RAV4?

A glow light that comes on while driving on your Toyota RAV4 or at any other time other than when the engine is started is meant 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 accurately understand the cause for the light up of your glow light.

My Toyota RAV4 glow light comes on and I’m going through a loss of power

The first situation is that you identify that your glow plug light comes on while driving your Toyota RAV4 and that you also knowledge a loss of power. In this instance, different problems can describe its lightning. Here is a list of the most important motives:

  • Trouble of EGR valve, in fact, if you suffer a loss of power, it is possible that your EGR valve is blocked, in this instance, it is logical that your preheat light comes on while driving on Toyota RAV4 because it is one of the failures of which it is expected to notify you. Have the status of your valve checked
  • Problem associated with the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can bring about turbo boost and a perturbation in the operation of the turbo.
  • Problem linked 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 affect its proper functioning.
  • Finally, the last problem that could lead to a glow indicator light on your Toyota RAV4 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 RAV4

To conclude, we’ll give you the explanations for a glow plug light that comes on on your Toyota RAV4 without you feeling any difference in power or motor vehicle behaviour. Ordinarily, this is an electronic problem:

  • Glow plug relays or fuses to be replaced, 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 problem.
  • 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 suggest you to go to your auto technician.
  • Faulty injection pressure sensor, ECU error
  • To discover more tips on the Toyota RAV4, take a look at the Toyota RAV4 category.