Ok thanks to all, so nothing to worrie, and very interesting the split in 4 mode, ....i guess that since i've installed my AFE air intake i switch often from Sport to Manual (for the sound :-) and sometime to normal, so it make sens that the computer memory is kind of confuse...

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2006 X5 4.4i premium, Sport package ,Winter Package, Sat Nav. AFE Power stage II Production : 08-2006
2012 BMW 128I Convertible Black
2011 Mercedes Benz B200 sold