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12V Electric Door Lock with Mechanical Key Override SIGMA-FE110
Brand: Generic / OEM
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Audited BOM: 8 Components
RMA Chain & Defect Intelligence
Root cause causal graph linking factory engineering flaws to verified consumer return reasons.
⚡ Causal Link: Defect to Consumer Return
Premature wear of motor brushes (ENG-001) causes lock operation failure (RMA-001) and excessive noise (REV-001, REV-006).
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+5 additional failure modes & return complaint chains locked
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