A new warning light on your dashboard? You don’t find out why it doesn’t shut off… It’s normal, an auto is elaborate and there are various factors why a light may occur. In cases where your glow plug light comes on while driving your Cadillac ATS, it may possibly indicate different problems. On this page, we will do everything we can to support you see things more clearly. First, we will discover how the preheating light on your Cadillac ATS operates, and then the different reasons it lights up when you are driving

glow-plug-light-cadillac-ats

What is the role of my Cadillac ATS glow plug light?

The primary intent of the engine glow plug light, which is most of the time symbolized by a yellow coil, is to assure that your glow plugs are working properly. In reality, it must light up when you switch on your Cadillac ATS 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 meant to stay or come on while driving with your car. Nevertheless, if it turns on while driving, it may reveal multiple failures, we will try to summarize the main ones.

What to do if the glow plug light comes on while driving on my Cadillac ATS?

A glow light that comes on while driving on your Cadillac ATS or at any other time other than when the engine is started is designed to inform you to a fault other than your spark plugs, we will check out this right now. Whatever the case, a switch to the diagnostic tool will allow you to carefully understand the reason for the light up of your glow light.

My Cadillac ATS glow light comes on and I’m going through a loss of power

The first possibility is that you detect that your glow plug light comes on while driving your Cadillac ATS and that you also knowledge a loss of power. In such a case, different complications can describe its presence. Here is a list of the main factors:

  • Issue 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 obvious that your preheat light comes on while driving on Cadillac ATS because it is one of the issue of which it is intended to notify you. Have the status of your valve tested
  • Problem 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 disturbance in the performance of the turbo.
  • Problem associated 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 disrupt its proper operation.
  • Finally, the last issue that could lead to a glow indicator light on your Cadillac ATS 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 Cadillac ATS

To conclude, we’ll give you the reasons for a glow plug light that comes on on your Cadillac ATS without you feeling any difference in power or car behaviour. Generally, this is an electronic fault:

  • Glow plug relays or fuses to be swapped out, 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 resolve 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 mechanic.
  • Faulty injection pressure sensor, ECU error

    • If you need more guides on the Cadillac ATS, go to our Cadillac ATS category.