Theory Test

Study topic

Dashboard warning lights in Ireland

Dashboard warning lights tell you about the condition of your vehicle. The theory test checks that you can recognise the important ones and know how urgently to act.

Key facts to remember

  • Red warning lights usually mean a serious fault -- stop as soon as it is safe and investigate.
  • A red oil-pressure light means you may be losing engine oil pressure; stop and switch off the engine.
  • A red brake warning light can mean low brake fluid or a handbrake left on -- do not ignore it.
  • Amber or orange lights are warnings to have something checked soon, such as the engine management light.
  • Green and blue lights are informational, for example showing that lights or indicators are in use.

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