A new light on your dashboard? You don’t figure out why it doesn’t shut off… It’s typical, a car is elaborate and there are various factors why a light might come on. If your glow plug light comes on while driving your Lexus CT, it might show some concerns. In the following paragraphs, we will do anything we can to help you see things more clearly. First, we will discover how the preheating light on your Lexus CT works, and then the different motives it lights up when you are driving

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What is the purpose of my Lexus CT glow plug light?

The primary goal of the engine glow plug light, which is most of the time symbolized by a yellow coil, is to make sure that your glow plugs are working properly. In reality, it must light up when you switch on your Lexus CT 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 comes on while driving, it may show several issues, we will try to summarize the most important ones.

What to do if the glow plug light comes on while driving on my Lexus CT?

A glow light that comes on while driving on your Lexus CT or at any other time other than when the engine is started is meant to warn you to a fault other than your spark plugs, we will check out this right now. No matter the reason, plug in your car to the diagnostic tool will allow you to properly translate the motive for the light up of your glow light.

My Lexus CT glow light comes on and I’m experiencing a loss of power

The first possibility is that you notice that your glow plug light comes on while driving your Lexus CT and that you also knowledge a loss of power. In such a case, some concerns can describe its presence. Here is a list of the most important factors:

  • Problem of EGR valve, indeed, if you go through a loss of power, it is possible that your EGR valve is clogged, in this instance, it is expected that your preheat light comes on while driving on Lexus CT because it is one of the failures of which it is meant to notify you. Have the status of your valve checked
  • Trouble related to 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.
  • Trouble 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 affect its proper operation.
  • Finally, the last trouble that could lead to a glow indicator light on your Lexus CT 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 Lexus CT

To conclude, we’ll give you the motives for a glow plug light that comes on on your Lexus CT without you feeling any difference in power or vehicle behaviour. Generally, 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, test the other options first because it is not easy to find it alone, we suggest you to go to your repair shop.
  • Faulty injection pressure sensor, ECU error

    • In the event that you have any additional questions about the Lexus CT, do not hesitate to consult our Lexus CT category.