A new warning light on your dashboard? You don’t figure out why it doesn’t shut off… It’s typical, an automobile is complex and there are multiple reasons why a light could occur. In cases where your glow plug light comes on while driving your Suzuki Alto, it might point out different concerns. In this article, we will do everything we can to help you see things more clearly. First, we will see how the preheating light on your Suzuki Alto functions, and then the different motives it lights up when you are driving


What is the goal of my Suzuki Alto glow plug light?

The main purpose of the engine glow plug light, which is in most cases represented 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 Suzuki Alto 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. However, if it comes on while driving, it may show multiple issues, we will try to summarize the most important ones.

What to do if the glow plug light comes on while driving on my Suzuki Alto?

A glow light that comes on while driving on your Suzuki Alto or at any other time other than when the engine is started is meant to warn you to a problem other than your spark plugs, we will check out this now. In any case, a switch to the diagnostic tool will allow you to properly translate the cause for the light up of your glow light.

My Suzuki Alto glow light comes on and I’m going through a loss of power

The first situation is that you perceive that your glow plug light comes on while driving your Suzuki Alto and that you also encounter a loss of power. In this case, different problems can explain its lightning. Here is a list of the most important reasons:

  • Trouble of EGR valve, indeed, if you go through a loss of power, it is possible that your EGR valve is blocked, in this case, it is obvious that your preheat light comes on while driving on Suzuki Alto because it is one of the problem of which it is designed to warn you. Have the status of your valve checked
  • Problem 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.
  • Problem linked to the injection, either an injector that has seized up or the injection pump that is malfunctioned 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 Suzuki Alto coupled with a loss of power, is that your fuel filter is too dirty, you should encounter 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 Suzuki Alto

To finish , we’ll give you the motives for a glow plug light that comes on on your Suzuki Alto without you feeling any difference in power or car behaviour. In most cases, this is an electronic problem:

  • Glow plug relays or fuses to be replaced, 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 trouble.
  • You have a false contact somewhere in your electrical circuit, test out the other options first because it is not easy to find it alone, we suggest you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error
  • If you want more guides on the Suzuki Alto, go to our Suzuki Alto category.