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Fuel gauge lights flash

Fuel gauge lights flash - Battery too hot

Milwaukee · M12 FUEL Drills

What does Fuel gauge lights flash mean?

The battery pack has reached an excessive temperature, causing the tool to stop running as a protective measure. The flashing lights indicate an overheat condition.

Common Causes

  • Prolonged or heavy tool use in demanding applications.
  • Operating the tool or charging the battery in a hot environment.
  • Battery pack exposed to direct sunlight or other heat sources.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Remove the hot battery pack from the tool immediately.

  2. 2

    Place the battery pack in a cool, shaded, and well-ventilated area.

  3. 3

    Allow the battery pack to cool down completely before attempting to use or charge it.

  4. 4

    Avoid using the tool in extreme heat to prevent reoccurrence of overheating.

Browse all codes in this manual (8)
Verified technical data. Last updated: April 2026

Related Faults

1 light flashes 4 times1 fuel gauge light flashes 4 times - Battery low charge1 light flashes 8 times1 fuel gauge light flashes 8 times - Battery completely dischargedDamaged cordDamaged or entangled cord - Risk of electric shock
Source: Milwaukee M12 FUEL Drills
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