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Sandy HolmesSep 5, 2025
Why does the service indicator light on after changing carbon brushes in my Hilti Drill?
- JJeffrey ReeseSep 5, 2025
If the service indicator light illuminates after changing the carbon brushes on your Hilti Drill, it means that the contact surfaces are not yet run in. Run in the carbon brushes by allowing the power tool to run under no load for at least 1 minute without interruption.