IMMO guideReplacement BCM Immobiliser Matching

This guide explains what must be matched after replacing a body control module (BCM) on a vehicle with an immobiliser, focusing on the lawful owner's responsibilities and the manufacturer-approved procedures performed by dealers or registered automotive locksmiths. It covers how the immobiliser and BCM interact, when matching is required, ownership documentation, choosing a professional, what happens during the service, verification, common problems, scam avoidance, and preventing repeat failures. By the end, the reader will understand the entire process, be able to prepare the necessary paperwork, ask informed questions, and recognise a correctly completed immobiliser match.