Just get the key made, the blank is not uncommon at Wally World and many ace hardwares and such will have the ILCO blank. Worry about getting a bmw blank later on, you'll have those ILCO's to keep in your sock drawer or so someone can mail it to you if lost.
The actuators shouldn't require lubrication, and you would have to open the door to do that (they are electric)
The tumblers perhaps could use it.
Lucky yours work, many actuators do not due to the little round ball that turns the rear end of it.
