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In this video, I explained in detail how to fix the non-working on-board computer button (BC) on the bmw e46 car. This is a full-fledged way from disconnecting the battery, removing the airbag from the steering wheel and further dismantling the steering wheel with the nuances of its removal. Removing the switch from the steering wheel loop on which the BC is located. Next, I told you how to disassemble the switch itself, what mechanisms it has and how they work. He explained the reason why the on-board computer on the car does not work and how to solve this reason. This video will help many people who have this problem and have decided to fix it.