AFAIK the iDrive starts to boot up when you use the remote to unlock the
car. If you get in the car without first having to unlock it, say, from
your garage at home, it will seem to take longer to boot up when
compared to a situation where you unlock from 50 feet while walking to
the car, open the door for the old lady etc etc...
Armed with this info, see if that fits your observations and let us all
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