I had the auto lock feature activated and hated it. I had it changed back 2 weeks later. The rear hatch constanlty tried to relock itself, and you had to always hit the central unlock button or double pull each door handle. You can always try it out and change it back if you don't like it, but don't let your dealer charge you (or at least not charge you much) for this service. Mine (Center BMW) did it for free and it took about 10 mins. each time.

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'06 X5 4.8is, TiAg/black, cold weather pkg., comfort seats
'07 750Li, TiAg/black, sport pkg.
'05 Ford F350 silver met./slate gray, Lariat, 6.0 PSD, CC, DRW, FX4