Do a little more investigation; can you open the door from the inside when the door won't open from the outside? (Roll down the window to test). You can determine if the door actuator is getting the command to remove the double lock.

Auto locking doors will break the lock motors much faster than if you don't. Wife's car killed all four before it was 17 years old and mine is 20+ and one works 80-90% of the time the rest all still work.

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