If you have a hitch with power you can apply power to the right pins and backfeed to get enough power to the battery to operate the lock.

If you locked with the alarm set the doors will be double locked you can't unlock by pulling the inner handle so locksmith tricks will not work.

There's a trick to pull the cable that unlatches the door when dhc is broken but the door can't be locked so that won't help you.

There's a way to get into the hood from outside but you have to pull a kidney and cut a bit of the plastic around the radiator.

__________________
2011 E70 • N55 (me)
2012 E70 • N63 (wife)