More clarity needed.

You said when you lock with key it unlocked the door?

There are two motors in the lock actuator, the first motor runs on all doors to enable the other three doors when set to only unlock the driver door first.

When that motor fails you can't open the door with either inside or outside door handle.

Usually when DLA motor fails it will work either lock or unlock and initially some of the time.

It should not matter if it's activated with fob or lock button except the disable motor doesn't disable the handles when locked from central lock.

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