---
title: "Ignition Lock Assembly"
industry: "Motor Vehicle Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:IGNITION_LOCK_ASSEMBLY"
  data_integrity_hash: "a3deaa6a2fa7389af3e345dd20261d71"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:IGNITION_LOCK_ASSEMBLY"
  data_source_uri: "https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/ignition-lock-assembly.md"
  official_resource_url: "https://cnfx.com/industry/motor-vehicle-manufacturing/product/ignition-lock-assembly"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.5 N·m torque, -40°C to 85°C ambient temperature, 9-16 VDC electrical input"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 50
    unit: "m"
    consequence: "Electromechanical contact degradation due to fretting corrosion at mating surfaces (contact resistance follows Holm's law: R = ρ/2a where a is contact radius), mechanical fatigue from cyclic loading exceeding 10⁶ cycles at 2 N·m torque"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Electrochemical migration between dissimilar metals (copper contacts and brass tumblers) in humid environments (&gt;60% RH)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Gold plating (0.5 μm thickness) on electrical contacts with hermetic sealing to IP67 standard"
  - node_2:
      trigger: "Plastic deformation of tumblers from shear stress exceeding 250 MPa during forced rotation attempts"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Case-hardened steel tumblers (Rockwell C 45-50) with anti-shear geometry and torque limiter at 3 N·m"
bom_nodes:
  lock-cylinder:
    type: "part"
    urn: "URN:CNFX:ME:LOCK_CYLINDER"
    interface_type: "physical-logic-coupled"
  electrical-switch-module:
    type: "part"
    urn: "URN:CNFX:ME:ELECTRICAL_SWITCH_MODULE"
    interface_type: "physical-logic-coupled"
  mounting-bracket:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_BRACKET"
    interface_type: "physical-logic-coupled"
  tumbler-set:
    type: "part"
    urn: "URN:CNFX:ME:TUMBLER_SET"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 11446:2012 (ROAD VEHICLES - CONNECTORS FOR ELECTRICAL SYSTEMS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/ignition-lock-assembly.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "114b2424a49bd107ad491999d4e46b9f61ca891b8aec6a332851ddf09a716283"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Ignition Lock Assembly

## 1. Technical Definition
A security and electrical switching mechanism that controls vehicle ignition and accessory power states.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.5 N·m torque, -40°C to 85°C ambient temperature, 9-16 VDC electrical input**. Failure boundary: **Contact resistance exceeding 50 mΩ, mechanical wear exceeding 0.3 mm on tumblers, torque below 0.3 N·m for cylinder rotation**, Mechanism: **Electromechanical contact degradation due to fretting corrosion at mating surfaces (contact resistance follows Holm's law: R = ρ/2a where a is contact radius), mechanical fatigue from cyclic loading exceeding 10⁶ cycles at 2 N·m torque**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Electrochemical migration between dissimilar metals (copper contacts and brass tumblers) in humid environments (&gt;60% RH) | 8 | Increased contact resistance causing voltage drop &gt;0.5 V at 10 A load | Gold plating (0.5 μm thickness) on electrical contacts with hermetic sealing to IP67 standard |
| Plastic deformation of tumblers from shear stress exceeding 250 MPa during forced rotation attempts | 8 | Mechanical binding preventing key rotation beyond 15° angular displacement | Case-hardened steel tumblers (Rockwell C 45-50) with anti-shear geometry and torque limiter at 3 N·m |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Lock Cylinder](https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/lock-cylinder.md) `(Standalone System)`
- [Electrical Switch Module](https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/electrical-switch-module.md) `(Standalone System)`
- [Tumbler Set](https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/tumbler-set.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Automated Assembly Line**, **Electrical Testing Station**, **Laser Marking Machine**  
**Downstream Applications**: Steering Column Assembly, Complete Ignition System, Vehicle Security Module  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are used in this ignition lock assembly for durability?
**A**: This ignition lock assembly is constructed from zinc alloy, steel, thermoplastic polymers, and copper alloys to ensure corrosion resistance, mechanical strength, and reliable electrical conductivity in demanding automotive environments.

### Q: How does the ignition lock assembly integrate with vehicle security systems?
**A**: The assembly combines a lock cylinder with a tumbler set for physical security and an electrical switch module that controls ignition and accessory power states, often interfacing with modern anti-theft and immobilizer systems.

### Q: What are the main components included in the BOM for installation?
**A**: The bill of materials includes an electrical switch module, lock cylinder, mounting bracket, and tumbler set, providing all necessary parts for a complete replacement or OEM installation in motor vehicle manufacturing.

## 6. Manufacturing Compliance
- ISO 11446:2012 (ROAD VEHICLES - CONNECTORS FOR ELECTRICAL SYSTEMS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Ignition Lock Assembly](https://cnfx.com/industry/motor-vehicle-manufacturing/product/ignition-lock-assembly)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: IGNITION_LOCK_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: f98ea540
