Could be the lock motor in the roof above your head. Have picture somewhere, try to find it.
https://e89.zpost.com/forums/attachm...1&d=1683927483
Speed reference is driving above nominal speed roof unlocked...possibly.
Might be right side window frame lock hole with switch inside.
This also refers:
https://www.bimmerfest.com/threads/u...codes.1222745/