Same problem for me. Here's my story.My new bike has displayed the following warning on 3 occasions in the first 500 miles.
Is this the same message you were referring to?
I initially had 6,000 problem free, predominately 2-up, miles. However during a solo ride with a buddy to, around, and back from the Pyrenees, consisting of 2,000 enthusiastic miles in some pretty hot weather, I had the same 3 errors messages. At the same time the suspension defaulted to its lowest position and remained there. Whilst this happened, the usual dash white down arrow, turned to a yellow colour.
On my return I took the bike to my dealer who initially diagnosed a software issue. Updating did not fix the problem. They then said there was air in the hydraulic suspension system. Bleeding did not fix it. They then said the hydraulic fluid was low, so refilled and re-bled the system again. Yippee! This appeared to fix the issue. When I went to collect the bike all seemed to work OK. However, on my journey home, after only 3 miles, the error messages re-occurred and the suspension again stopped working and dropped to the low position.
I rode straight back to the dealer and, after 45mins or so, they informed me that the hydraulic suspension pump had totally failed. After a few calls to BMW Motorrad, they informed me that a replacement pump was not currently avaliable as an upgraded pump was being sought. Nearly 6 weeks later I was told the new spec pump was in (part no. 33545B61604). On Monday 22nd Sept, the bike is booked in for 2 days to fit the new pump. Hopefully this will properly address the route cause problem and fix the issue. I will update you later next week.