Warning light may refer to:

• Aircraft warning lights, a device used on radio masts and towers and other tall structures to prevent collisions
• Idiot light, an indicator of malfunction of a system within a motor vehicle, especially if used to replace a gauge
  • Check engine light, to indicate malfunction of a computerized engine management system
• Warning Light, an American ambient music project

• Emergency light

This disambiguation page lists articles associated with the title Warning light.
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