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Anatomy of the 17-Character VIN (ISO Standard 3779)
Letters I (i), O (o), and Q (q) are prohibited in all standard VIN strings to prevent optical confusion with numbers 1 and 0:
┌─────────────┬───────────────────────────┬─────────────────────────────────────────────┐
│ 1 2 3 │ 4 5 6 7 8 9 │ 10 11 12 13 14 15 16 17 │
│ ── WMI ── │ ────────── VDS ────────── │ ────────────────── VIS ──────────────────── │
│ Nation/OEM │ Model, Body, Engine, Chk │ Year Plant Individual Sequential Serial │
└─────────────┴───────────────────────────┴─────────────────────────────────────────────┘
Example: J T 4 B F 3 2 K 8 2 1 0 4 8 2 9 1 (Toyota Camry)1. WMI (World Manufacturer Identifier, Positions 1–3):
- Position 1: Geographic origin and country of manufacture (1–5: North America, J: Japan, K: South Korea, L: China, S–Z: Europe, X: Eastern Europe/CIS).
- Positions 2–3: Vehicle manufacturer brand code (e.g.,
JT— Toyota Japan,WBA— BMW Germany,KMH— Hyundai South Korea,1FA— Ford USA).
2. VDS (Vehicle Descriptor Section, Positions 4–9):
- Positions 4–8: Body style, chassis platform, restraint systems, and engine displacement/type (gasoline, diesel, hybrid, full EV).
- Position 9: Check Digit — calculated using a weighted modulus-11 algorithm that immediately detects transposition typos and counterfeit paperwork.
3. VIS (Vehicle Identifier Section, Positions 10–17):
- Position 10: Model Year code (standard alphanumeric progression:
L=2020,M=2021,N=2022,P=2023,R=2024,S=2025,T=2026). - Position 11: Assembly plant identifier.
- Positions 12–17: Production sequence serial number assigned on the manufacturer’s assembly line.
Repair Shop Operations: Manual Entry vs CarsKeep VIN Scanner
| Workshop Intake Workflow | Manual Paper Entry | CarsKeep Instant OCR Scanner |
|---|---|---|
| Intake Speed & Accuracy | Advisor types 17 characters (12% error rate). | Camera scan in 1.5 seconds with 100% verification. |
| Parts Fitment Precision | Wrong brake rotor ordered due to submodel confusion. | PR-code and trim-specific part number matching. |
| Factory Fluid Specifications | Hunting through workshop manuals and forums. | Direct display: 4.4 L capacity, 0W-20 API SP spec. |
| Digital Service History | Records fragmented across license plate changes. | Permanent lifetime repair ledger anchored to VIN. |
3 Core VIN Automation Capabilities in CarsKeep
- Instant Door-Jamb Decal OCR: Point any smartphone camera at the B-pillar barcode or paper vehicle registration card to ingest make, model, year, and engine specifications instantly.
- Real-Time Distributor Catalog Lookup: Ingestion of the VIN triggers instant API queries across integrated warehouse suppliers, displaying wholesale availability and landed pricing.
- Automated Scheduled Maintenance Schedules: CarsKeep automatically maps factory service intervals to the vehicle’s current odometer reading, suggesting unperformed maintenance packages during check-in.