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 many factors why a light might come on. In the event that your glow plug light comes on while driving your Toyota Tacoma, it may possibly indicate several concerns. In the following paragraphs, we will do everything we can to help you see things more clearly. First, we will see how the preheating light on your Toyota Tacoma operates, and then the different motives it lights up when you are driving

glow-plug-light-toyota-tacoma

What is the goal of my Toyota Tacoma glow plug light?

The main goal of the engine glow plug light, which is generally symbolized 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 Tacoma 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 vehicle. Nevertheless, if it turns on while driving, it may show several troubles, we will try to explain the most important ones.

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

A glow light that comes on while driving on your Toyota Tacoma or at any other time other than when the engine is started is meant to notify you to a problem other than your spark plugs, we will check out this now. No matter the reason, plug in your car to the diagnostic tool will allow you to precisely understand the motive for the light up of your glow light.

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

The first situation is that you detect that your glow plug light comes on while driving your Toyota Tacoma and that you also experience a loss of power. In this instance, several concerns can demonstrate its lightning. Here is a list of the most important factors:

  • Problem of EGR valve, in reality, if you go through 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 Tacoma because it is one of the failures of which it is meant to notify you. Have the status of your valve checked out
  • Problem associated with the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can result in turbo boost and a perturbation in the performance of the turbo.
  • Problem in connection with the injection, either an injector that has seized up or the injection pump that is malfunctioned by filings or other possible foreign bodies that affect its proper functioning.
  • Finally, the last issue that could lead to a glow indicator light on your Toyota Tacoma coupled with a loss of power, is that your fuel filter is too dirty, you should experience 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 Tacoma

Finally, we’ll give you the motives for a glow plug light that comes on on your Toyota Tacoma without you feeling any difference in power or vehicle behaviour. In most cases, this is an electronic problem:

  • Glow plug relays or fuses to be changed, 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 solve the issue.
  • You have a false contact somewhere in your electrical circuit, check the other alternatives first because it is not easy to find it alone, we suggest you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error

    • If you need more tutorials on the Toyota Tacoma, go to our Toyota Tacoma category.