A new warning light on your dashboard? You don’t understand why it doesn’t shut off… It’s normal, a vehicle is complicated and there are many factors why a light could come on. If your glow plug light comes on while driving your Acura TL, it may reveal some problems. In this article, we will do anything we can to support you see things more clearly. First, we will see how the preheating light on your Acura TL works, and then the different causes it lights up when you are driving


What is the purpose of my Acura TL glow plug light?

The main goal 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 effectively. In fact, it must light up when you switch on your Acura TL 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 car. But, if it comes on while driving, it may indicate different troubles, we will try to describe the main ones.

What to do if the glow plug light comes on while driving on my Acura TL?

A glow light that comes on while driving on your Acura TL or at any other time other than when the engine is started is intended 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 carefully understand the reason for the light up of your glow light.

My Acura TL glow light comes on and I’m experiencing a loss of power

The first situation is that you notice that your glow plug light comes on while driving your Acura TL and that you also knowledge a loss of power. In such a case, some trouble can demonstrate its presence. Here is a list of the main factors:

  • Trouble of EGR valve, in reality, if you undergo 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 Acura TL because it is one of the problem of which it is intended to alert 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 bring about turbo boost and a disturbance in the performance of the turbo.
  • Trouble associated with the injection, either an injector that has seized up or the injection pump that is damaged by filings or other possible foreign bodies that disturb its proper performing.
  • Finally, the last trouble that could lead to a glow indicator light on your Acura TL 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 Acura TL

To conclude, we’ll give you the causes for a glow plug light that comes on on your Acura TL without you feeling any difference in power or car behaviour. Ordinarily, 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 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 encourage you to go to your auto technician.
  • Faulty injection pressure sensor, ECU error
  • To discover more tips on the Acura TL, take a look at the Acura TL category.