[isugoo]

Happened to me 2 weeks ago.
Dealership replaced fuse to different one (15 ohms or whatever to 20) and replaced all door actuators. So just make service app.

It's not common issue on the M3s but it was somewhat known issue (at least for dealership) for E9X 3ers.

For time being, you need to use your physical key to unlock your car.
And if you need to open gas door, just take off battery cover and you'll see green plastic wire, just pull that wire to open gas door.

When it happened to me, I opened driver side door with a key then open/lock the locking mechanism 10-15X with my fingers in the side of door (where child safe lock is).
It actually helped me to use door handle inside of the car.

If you can open pass door somehow, try that too for mean time.
Other than that, nothing worked, no touching the door handle, no lock/unlock button in the center console, no door handle/knob from the inside. Even called Roadside Assistant to remote unlock. Nothing worked.