A new warning light on your dashboard? You don’t understand why it doesn’t shut off… It’s typical, a vehicle is elaborate and there are multiple causes why a light might come on. In cases where your glow plug light comes on while driving your Land Rover LR4, it might point out several concerns. In this post, we will do anything we can to help you see things more clearly. First, we will find out how the preheating light on your Land Rover LR4 functions, and then the different motives it lights up when you are driving

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What is the goal of my Land Rover LR4 glow plug light?

The main purpose of the engine glow plug light, which is most of the time symbolized 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 Land Rover LR4 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 car. But, if it comes on while driving, it may suggest different failures, we will try to describe the main ones.

What to do if the glow plug light comes on while driving on my Land Rover LR4?

A glow light that comes on while driving on your Land Rover LR4 or at any other time other than when the engine is started is designed to inform you to a problem other than your spark plugs, we will check out this now. Whatever the case, connecting your vehicle to the diagnostic tool will allow you to carefully understand the reason for the light up of your glow light.

My Land Rover LR4 glow light comes on and I’m experiencing a loss of power

The first probability is that you perceive that your glow plug light comes on while driving your Land Rover LR4 and that you also knowledge a loss of power. In this instance, several trouble can demonstrate its lightning. Here is a list of the main causes:

  • Trouble of EGR valve, in fact, if you are affected a loss of power, it is possible that your EGR valve is blocked, in this instance, it is obvious that your preheat light comes on while driving on Land Rover LR4 because it is one of the issue of which it is expected to notify you. Have the status of your valve inspected
  • Problem associated with the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can bring about turbo boost and a perturbation in the operation of the turbo.
  • Problem relevant to the injection, either an injector that has seized up or the injection pump that is destroyed by filings or other possible foreign bodies that disturb its proper functioning.
  • Finally, the last issue that could lead to a glow indicator light on your Land Rover LR4 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 Land Rover LR4

To conclude, we’ll give you the motives for a glow plug light that comes on on your Land Rover LR4 without you feeling any difference in power or car behaviour. In general, 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 solve 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 encourage you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error

    • If you want more tutorials on the Land Rover LR4, go to our Land Rover LR4 category.