failure mode
FM-04: FM-04 RUNTIME IS VERY SHORT OR THE TOOL SHUTS OFF ABRUPTLY
The drill runtime is very short or the tool shuts off abruptly during use, often without unusual heat.
Diagnostic overview
The drill runtime is very short or the tool shuts off abruptly during use, often without unusual heat.
Likely Root Causes
- Battery is aged, deeply discharged, or has weak cells
- Charge cycle did not reach the steady-green complete state
- Battery contacts are contaminated or the pack is loosely latched
- Task or bit demand is higher than the compact drill can sustain
- Switch, brushes, motor, or drive has excessive loss
Quick Checks
- dry brush; timer; light repeatable test task.
Common Fixes
- timer
Related symptoms
The drill stops early or gives far less runtime than expected without unusual heat.
The drill stops early or gives far less runtime than 1. Record the charge indication and task; center-lock and remove the pack.
Included in the full manual
- root cause analysis
- tools needed
- step-by-step repair procedure
- diagrams
- exploded views
- post-repair checks
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