I had the same issue. It was solved by delaying the self level system from operating for 30sec after the cars starts. I was told the radio and the SLS run on the same (insert word I don't know here), thus you can get false readings when the car starts up.

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2005 545i Sports/Prem Package
(Retired) 2003 X5 4.4i-sport package, cold weather package, OEM trailer hitch, 20' replica metallic pewter 215's, X-pipe, Navi w/ custom splash (MUFC logo), cross drilled brembo rotors with Akebono ceremic pads.