A new warning light on your dashboard? You don’t understand why it doesn’t switch off… It’s typical, a vehicle is elaborate and there are many factors why a light could come on. In the event that your glow plug light comes on while driving your Scion xB, it may possibly signal several issues. On this page, we will do everything we can to support you see things more clearly. First, we will see how the preheating light on your Scion xB operates, and then the different reasons it lights up when you are driving

glow-plug-light-scion-xb

What is the role of my Scion xB glow plug light?

The main goal of the engine glow plug light, which is generally represented by a yellow coil, is to assure that your glow plugs are working correctly. In reality, it must light up when you switch on your Scion xB 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 indicate different issues, we will try to detail the main ones.

What to do if the glow plug light comes on while driving on my Scion xB?

A glow light that comes on while driving on your Scion xB 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, 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 Scion xB glow light comes on and I’m having a loss of power

The first probability is that you identify that your glow plug light comes on while driving your Scion xB and that you also experience a loss of power. In this case, several complications can describe its lightning. Here is a list of the main factors:

  • Trouble of EGR valve, in reality, if you are affected a loss of power, it is possible that your EGR valve is blocked, in this case, it is rational that your preheat light comes on while driving on Scion xB because it is one of the failures of which it is intended to warn you. Have the status of your valve examined
  • Problem linked to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can cause turbo boost and a disturbance in the performance of the turbo.
  • Problem linked 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 performing.
  • Finally, the last trouble that could lead to a glow indicator light on your Scion xB 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 Scion xB

Finally, we’ll give you the reasons for a glow plug light that comes on on your Scion xB without you feeling any difference in power or car behaviour. In most cases, this is an electronic fault:

  • 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 get rid of the trouble.
  • You have a false contact somewhere in your electrical circuit, check the other options first because it is not easy to find it alone, we suggest you to go to your mechanic.
  • Faulty injection pressure sensor, ECU error

    • To discover more tips on the Scion xB, take a look at the Scion xB category.