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AV-SCANNER / IMMO guides / Keys
This guide explains how immobiliser systems work and what a lawful owner or technician must know before buying a replacement key or fob, with a firm emphasis on proving ownership and using authorised routes. It covers the legal paperwork, the difference between dealer and registered automotive locksmith services, what happens during programming, and how to verify the finished job. You will be able to choose a safe supply route, spot fake or unusable used keys, and confirm that the new key starts the car and operates every function it should. The guide also prepares you to prevent a repeat by improving key security and record keeping.
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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