A new light on your dashboard? You don’t understand why it doesn’t shut off… It’s typical, an automobile is elaborate and there are multiple factors why a light may come on. In cases where your glow plug light comes on while driving your Toyota Tundra, it might show some issues. In the following paragraphs, we will do everything we can to help you see things more clearly. First, we will discover how the preheating light on your Toyota Tundra operates, and then the different motives it lights up when you are driving

glow-plug-light-toyota-tundra

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

The main purpose of the engine glow plug light, which is generally symbolized by a yellow coil, is to assure that your glow plugs are working effectively. In reality, it must light up when you switch on your Toyota Tundra 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 supposed to stay or come on while driving with your motor vehicle. But, if it comes on while driving, it may indicate different failures, we will try to detail the main ones.

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

A glow light that comes on while driving on your Toyota Tundra or at any other time other than when the engine is started is designed to warn you to a problem other than your spark plugs, we will check out this now. In any case, plug in your car to the diagnostic tool will allow you to properly translate the reason for the light up of your glow light.

My Toyota Tundra glow light comes on and I’m experiencing a loss of power

The first possibility is that you detect that your glow plug light comes on while driving your Toyota Tundra and that you also knowledge a loss of power. In this case, some concerns can describe its lightning. Here is a list of the main factors:

  • Issue of EGR valve, indeed, if you are affected 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 Tundra because it is one of the problem of which it is expected to warn you. Have the status of your valve checked
  • Trouble linked 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 perturbation in the operation of the turbo.
  • Trouble in connection with 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 operation.
  • Finally, the last issue that could lead to a glow indicator light on your Toyota Tundra 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 Tundra

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

  • 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 get rid of 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 suggest you to go to your auto technician.
  • Faulty injection pressure sensor, ECU error
  • If you have any further questions about the Toyota Tundra, do not hesitate to consult our Toyota Tundra category.