A new warning light on your dashboard? You don’t understand why it doesn’t turn off… It’s typical, an automobile is complicated and there are various causes why a light could come on. In the event that your glow plug light comes on while driving your Toyota Land Cruiser Serie 120, it might reveal some issues. In the following paragraphs, we will do anything we can to support you see things more clearly. First, we will discover how the preheating light on your Toyota Land Cruiser Serie 120 functions, and then the different explanations it lights up when you are driving

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What is the purpose of my Toyota Land Cruiser Serie 120 glow plug light?

The primary role of the engine glow plug light, which is in most cases represented by a yellow coil, is to guarantee that your glow plugs are working properly. In fact, it must light up when you switch on your Toyota Land Cruiser Serie 120 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 vehicle. But, if it turns on while driving, it may reveal different issues, we will try to describe the most important ones.

What to do if the glow plug light comes on while driving on my Toyota Land Cruiser Serie 120?

A glow light that comes on while driving on your Toyota Land Cruiser Serie 120 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. No matter the reason, plug in your car to the diagnostic tool will allow you to precisely interpret the motive for the light up of your glow light.

My Toyota Land Cruiser Serie 120 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 Land Cruiser Serie 120 and that you also knowledge a loss of power. In this instance, some concerns can describe its presence. Here is a list of the most important causes:

  • Issue of EGR valve, in reality, if you go through a loss of power, it is possible that your EGR valve is blocked, in this case, it is logical that your preheat light comes on while driving on Toyota Land Cruiser Serie 120 because it is one of the failures of which it is meant to notify you. Have the status of your valve examined
  • Problem 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.
  • Problem 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 disrupt its proper function.
  • Finally, the last trouble that could lead to a glow indicator light on your Toyota Land Cruiser Serie 120 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 Land Cruiser Serie 120

To conclude, we’ll give you the explanations for a glow plug light that comes on on your Toyota Land Cruiser Serie 120 without you feeling any difference in power or vehicle behaviour. In most cases, this is an electronic fault:

  • Glow plug relays or fuses to be swapped out, 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 trouble.
  • You have a false contact somewhere in your electrical circuit, check the other options 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

    • If you wish more tutorials on the Toyota Land Cruiser Serie 120, go to our Toyota Land Cruiser Serie 120 category.