A new warning light on your dashboard? You don’t figure out why it doesn’t turn off… It’s normal, an automobile is complex and there are multiple causes why a light may come on. In the event that your glow plug light comes on while driving your Toyota Sequoia, it may suggest some things. In this article, we will do anything we can to support you see things more clearly. First, we will find out how the preheating light on your Toyota Sequoia functions, and then the different causes it lights up when you are driving

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

The primary purpose of the engine glow plug light, which is most of the time represented by a yellow coil, is to ensure that your glow plugs are working properly. In fact, it must light up when you switch on your Toyota Sequoia 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 expected to stay or come on while driving with your car. However, if it comes on while driving, it may indicate several troubles, we will try to detail the main ones.

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

A glow light that comes on while driving on your Toyota Sequoia 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 take a look at this right now. In any case, plug in your car to the diagnostic tool will allow you to properly understand the motive for the light up of your glow light.

My Toyota Sequoia glow light comes on and I’m encountering a loss of power

The first probability is that you identify that your glow plug light comes on while driving your Toyota Sequoia and that you also knowledge a loss of power. In this instance, some complications can explain its presence. Here is a list of the main causes:

  • Problem of EGR valve, in fact, if you undergo a loss of power, it is possible that your EGR valve is blocked, in such a case, it is obvious that your preheat light comes on while driving on Toyota Sequoia because it is one of the issue of which it is intended to alert you. Have the status of your valve looked at
  • Problem associated with 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 operation of the turbo.
  • Problem associated 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 performance.
  • Finally, the last problem that could lead to a glow indicator light on your Toyota Sequoia coupled with a loss of power, is that your fuel filter is too dirty, you should get 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 Sequoia

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

  • Glow plug relays or fuses to be changed, 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 the other options first because it is not easy to find it alone, we suggest you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error
  • To get more tips on the Toyota Sequoia, take a look at the Toyota Sequoia category.