Hilti Service Reset Tool !exclusive! -

In older models, the service light was sometimes mechanically linked to the wear of the carbon brushes. Replacing the brushes would sometimes physically reset the mechanism or allow a mechanical lever to reset.

| Risk Category | Details | |---------------|---------| | | A rotary hammer that has done 500+ hours without regreasing can overheat, seize, or shatter carbide bits. | | Tool damage | Resetting counters doesn’t replace worn brushes – motor may continue running until commutator is destroyed. | | Bricking | Incorrect EEPROM writes (wrong address or checksum) can cause permanent firmware corruption. Some tools have anti-tamper fuses that blow if debug port is accessed incorrectly. | | Warranty void | Hilti’s 2‑year warranty (or 20‑year in some regions for certain tools) is void if unauthorized software is detected. Hilti tools log “counter reset without service” flags. | | Battery damage | Resetting battery pack cycles doesn’t rebalance cells – continued use can cause fire risk. |

If you are using Hilti's newest battery platform (Nuron), the system works differently.

While specific steps vary by model (e.g., TE 700-AHR vs. PS 500-AHR), the professional reset process generally involves:

When the red light is ignored for several hours, an automatic cut-out disables the tool.