How to reset IDrive Information Warning
2007 BMW 750iL - reset miles back to "0". Then with electronics on but motor off pushed the mileage knob as directed.
Message showed up in the lage left hand guage face and pushed the "reset knob until the desired item (in my case Microfilter) was highlighted.
Then pushed the reset knob once more. Message showed up in the large right hand guage face. Pushed reset knob until "reset" was highlighted. Then pushed reset knob.
Turned off by pushing start-stop engine button.
Yellow warning light now off and status of micro-filter is "ok".
Only difference I found to the instructions is that messages I was expecting to show up in the "triangle" below the transmission mode appeared in on the face of the spedo and tack.
Thanks to all who posted instructions