AV-SCANNER / IMMO guides / Keys
This guide explains how to replace a worn metal key blade while preserving the vehicle's immobiliser (IMMO) transponder, covering system operation, legal ownership requirements, professional service routes, and manufacturer-approved procedures. It is written for lawful owners and technicians who need a clear, practical path to a safe and functional key. You will learn how to verify the work, avoid common scams, and prevent premature wear, with all sensitive immobiliser operations directed to dealers and registered automotive locksmiths.
Guidance is general and covers many makes. Exact procedures and values vary by model, so confirm them in the factory service information for your vehicle.
Download all 12 sections as a branded PDF to use in the workshop.
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