A new warning light on your dashboard? You don’t find out why it doesn’t shut off… It’s typical, a car is complex and there are multiple reasons why a light may occur. In the event that your glow plug light comes on while driving your Mercedes Benz CLA Class, it may suggest different concerns. In this post, we will do everything we can to help you see things more clearly. First, we will see how the preheating light on your Mercedes Benz CLA Class functions, and then the different reasons it lights up when you are driving

glow-plug-light-mercedes-benz-cla-class

What is the goal of my Mercedes Benz CLA Class glow plug light?

The main 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 fact, it must light up when you switch on your Mercedes Benz CLA Class to tell you that they are heating the intake air in your cylinders and must go out after a few minutes when the engine is running. This preheat light is therefore not supposed to stay or come on while driving with your motor vehicle. But, if it turns on while driving, it may indicate different failures, we will try to describe the main ones.

What to do if the glow plug light comes on while driving on my Mercedes Benz CLA Class?

A glow light that comes on while driving on your Mercedes Benz CLA Class or at any other time other than when the engine is started is designed to warn you to a fault other than your spark plugs, we will check out this now. No matter the reason, a switch to the diagnostic tool will allow you to carefully translate the motive for the light up of your glow light.

My Mercedes Benz CLA Class glow light comes on and I’m having a loss of power

The first possibility is that you detect that your glow plug light comes on while driving your Mercedes Benz CLA Class and that you also experience a loss of power. In this case, different trouble can describe its lightning. Here is a list of the main reasons:

  • Problem of EGR valve, indeed, if you are affected a loss of power, it is possible that your EGR valve is clogged, in such a case, it is logical that your preheat light comes on while driving on Mercedes Benz CLA Class because it is one of the issue of which it is intended to notify you. Have the status of your valve examined
  • Problem associated with 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 operation of the turbo.
  • Problem relevant to the injection, either an injector that has seized up or the injection pump that is damaged 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 Mercedes Benz CLA Class 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 Mercedes Benz CLA Class

To finish , we’ll give you the reasons for a glow plug light that comes on on your Mercedes Benz CLA Class without you feeling any difference in power or motor vehicle behaviour. Ordinarily, 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 get rid of the problem.
  • You have a false contact somewhere in your electrical circuit, test out the other alternatives first because it is not easy to find it alone, we recommend you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error

    • If you want more tutorials on the Mercedes Benz CLA Class, go to our Mercedes Benz CLA Class category.