so had the same issue as you yesterday (5th), weird a few of use are getting issues like this at the same time. Anyway, my door lock is bust, so couldnt get in the car. Disconnected the battery overnight and then connected it back up and hey presto, back to normal....but for how long.
Now time to get that door lock fixed before it does it again.
'01 330i ///M-Tech1 Sports Pack