Here is a video I just uploaded on removing the steering wheel and in the process, removing the air bag.

This should be the same on E39, E46, E53, E83, E85 cars.

https://www.youtube.com/watch?v=gPFNMOCUv8A

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E46 M3 | E30 318is | E53 X5 4.8is | E39 530i