Have you checked fuses? If I am looking at the right diagram online, fuse 1 should send power for both steering wheel tilt and ac.
Other fuses listed for these
Steering wheel 1,134
Ac 1, 17, 18, 48, 98, 126
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2011 e92 ///m3 zcp - jzb/fr
ED 6/29/10
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