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AV-SCANNER / IMMO guides / Keys
This guide explains why a key stops turning in the ignition of an immobiliser-equipped vehicle and how a lawful owner or their technician can free it without damaging the lock, the key or the security system. It covers the mechanical and electronic causes, the proof of ownership you must have ready, the dealer and registered automotive locksmith routes, and what a professional job looks like from first inspection to final verification. By the end you will be able to diagnose the likely cause, choose the right professional, brief them accurately, check the finished work and take steps that prevent the fault returning.
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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