I am going by memory as it has been awhile since the last time I had my lock out. There is an allen bolt that is covered with a plastic plug when you open the door and look on the edge. Loosen this bolt and it will allow the lock to move forward and back a bit. Stick the key in and a believe you turn it either 45 or 90 degrees and the lock comes right out. One note of caution, don't overtighten the allen bolt when you put it back together as it can warp the tumber causing other problems.

Steve

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1997 E320
1990 Nissan 300ZX Twin Turbo (Stage X+)